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VOLVO 240 Power Mirror and Mirror Switch
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240 EARLY Power Mirrors (Alt 1)
240 EARLY Power Mirrors (Alt 2)
240 MID and LATE Power Mirrors

240 Early (Alt 2) Mirror Repairs and Electrical Stuff
240 LATE Mirror Repairs and Electrical Stuff

240 MIRROR SWITCHES
PORSCHE and SAAB MIRROR SWITCHES
Alternate Volvo MIRROR SWITCHES


POWER MIRRORS INTRO
It may not be well known, but there are
(at least) FOUR different power side mirror versions for the 240/260 from 1975 to 1993.

EARLY POWER MIRRORS
The first early version shown below (Alternate 1) came along in approximately 1975. These mirror were usually found in upscale models, such as the 260 series.

The second version (Alternate 2) shown below becaome the next visual styling change. This power mirror was used from approximately 1979 through the 1985 model year. This version was usually found in 240 Turbo models, some 240 GL models and 260s. 

MID-VERSION POWER MIRRORS
The visual styling of side mirrors changed again in 1986. These mirrors were a bit larger (with larger glass also). For these mid-version mirrors (1986-91), the circuitry remained the same as earlier power mirrors and they used the same switches as the early power mirrors. 

Also this 1986-91 period had a part number division for the mirrors and some parts.  The division for 244 models was before/after chassis number 378164. For 245 models the division was before/after chassis number 840616. This division occurred during the 1989 model year. The physical changes to these mirrors during this division are not known.

LATE POWER MIRRORS
The late version power mirror was offered for the 1992-93 240. The visual design of the late mirror looks the same as the 1986-91 mirror, however the circuitry and drive motor unit changed. Later style switches were also introduced and the wiring order was changed for those. Late mirrors also added heated mirror glass controlled by a relay and a dash switch.




240 Early (Alternate 1) Power Mirrors (up to 1978?)

 

Early 240 Power Mirror Exploded View above.
Early Mirror (Alternate 1) Part Numbers
1
283974
Rear view mirror, LHD, convex (Except USA CAN)
1
293975
Rear view mirror, LHD, convex (Except USA, CAN)
1
1128140
Rear view mirror, RHD, convex (Except USA, CAN)
1
1128141
Rear view mirror, RHD, convex (Except USA, CAN)
1

Rear view mirror LEFT, LHD, flat glass (USA, CAN)
1

Rear view mirror RIGHT, LHD, flat  glass (USA, CAN) (283972)



3

Mounting base (detail unknown)
4
1247989
Compression spring
5
1247990
Nut
6
1247984
Drive unit
7
956060
Screw M4x10
8
945828
Connector insulator male (round 4-pole white). On mirror harness. (Terminal: 2mm bullet)
9
1254005
Rubber bellows



10
1254000
Mirror glass (Except USA, CAN)
11
1247999
Mirror glass (USA, CAN)



12
1254003
Mirror disc plate (Except USA, CAN)
13
1254002
Mirror disc plate (USA, CAN)
15
1254001
Protection frame
16
1247985
Screw
17
955947
Washer
18
965483
Nut
19
1247991
Mounting base seal
20
1235091
Switch (1247993)
21
1235101
Nut for switch (1247994)
22
1247995
Cable harness (same PN right or left)
23
945829
Connector insulator female (round 4-pole white). On switch harness. (Terminal 2mm bullet)
24
1213665
Outside trim plate LEFT (240/260, except 262C)
24
1213666
Outside trim plate RIGHT (240/260, except 262C)
24
1248118
Outside trim plate LEFT (262C)
24
1248119
Outside trim plate RIGHT (262C)
24
1204630
Inside trim plate LEFT (240/260 to 1979)
24
1294713
Inside trim plate LEFT (240/260 1980 and later)
24
1204631
Inside trim plate RIGHT (240/260 to 1979)
24
1294714
Inside trim plate RIGHT (240/260 1980 and later)
24
1248188
Inside trim plate LEFT (262C)
24
1248189
Inside trim plate RIGHT (262C)
25
1213332
Recessed washer for outside trim plate
26
956312
Screw for outside trim plate






240 Early (Alternate 2) Power Mirrors (up to 1985)

 

Early 240 Power Mirror Exploded View above.
Early Mirror (Alternate 2) Part Numbers
1
1304127
Rear view mirror, RHD, convex glass (AUS, JPN)
1
1304128
Rear view mirror, RHD, convex glass (AUS, JPN)
1
1304117
Rear view mirror LEFT, LHD, convex glass (262C except CAN, JPN, USA) (1254722)
1
1129252
Rear view mirror LEFT, RHD, convex glass (except AUS, JPN)
1
1304125
Rear view mirror LEFT, flat glass (AUS) (1255500)
1
1304129
Rear view mirror LEFT, flat glass (262C AUS) (1246556)
1
1304111
Rear view mirror LEFT, RHD, convex glass (JPN) (1255232)
1
1304119
Rear view mirror LEFT, flat glass (262C CAN, USA) (1254798)
1
1129254
Rear view mirror LEFT, flat glass (CAN, USA) (283181)
1
1129250
Rear view mirror LEFT, LHD, convex glass (except JPN, CAN, USA) (283177)
1
1304126
Rear view mirror RIGHT, flat glass (AUS) (1255501)
1
1304130
Rear view mirror RIGHT, convex glass (262C AUS)
1
1129252
Rear view mirror RIGHT, RHD, convex glass (except AUS, JPN) (283179)
1
1129253
Rear view mirror RIGHT, RHD, convex glass (except CAN, JPN USA) (283180)
1
1304118
Rear view mirror RIGHT, LHD, convex glass (262C except CAN, JPN, USA) (1254723)
1
1304112
Rear view mirror RIGHT, RHD, convex glass (JPN) (1255233)
1
1129251
Rear view mirror RIGHT, LHD convex glass (except CAN, JPN, USA) (283178)
1
1304120
Rear view mirror RIGHT, flat glass (262C CAN, USA) (1254799)
1
1129255
Rear view mirror RIGHT, flat glass (CAN, USA) (283182)



3
1254634
Mirror base mount LEFT
3
1254635
Mirror base mount RIGHT
4
1321081
Compression spring (1254710)
5
1254709
Sleeve
6
1321080
Centering washer (1254711)
7
1254712
Sealing ring
8
1254797
Plastic plug
9
1304131
Drive unit (1254714)
10
956060
(up to 1979) Screw M4x10
10
987047
(1980 and later) Cross recessed screw (956060)
11
945828
Connector insulator male (round 4-pole white). On mirror harness. (Terminal 2mm bullet)
11
945829
Connector insulator female (round 4-pole white). On switch harness. (Terminal 2 mm bullet)
12
1254005
Rubber bellows



13
1255984
Mirror glass LEFT, flat glass (AUS, CAN, USA)
13
1255985
Mirror glass RIGHT, flat glass (AUS, CAN USA)
13
1255986
Mirror glass LEFT, convex (JPN) (1255234)
13
1255982
Mirror glass LEFT, convex (1254677)
13
1255984
Mirror glass LEFT, flat glass (AUS, CAN, USA) (1254793)
13
1255987
Mirror glass RIGHT, convex (JPN) (1255238)
13
1255985
Mirror glass RIGHT, flat glass (AUS, CAN, USA) (1254794)
13
1255983
Mirror glass RIGHT, convex (1254715)



14
1254679
Mirror disc plate LEFT
14
1254716
Mirror disc plate RIGHT
15

Pop rivet 3 x 4.5 mm
16
1254638
Protective casing LEFT
16
1254639
Protective casing RIGHT
17
959219
Hex socket screw M8x16
17
986679
Toothed lock washer (262C) (955949) 8.4mm
18
1254444
Recessed washer (Except 262C)
19
1235091
Switch
20
1235101
Nut for switch
21
1235907
(up to 1978) Cable harness LEFT, (244 chassis 221751 and later. 245 chassis 38921 and later.) (1235076)
21
1235906
(up to 1978) Cable harness RIGHT (244 chassis 221751 and later. 245 chassis 38921 and later.) (1235077)
21
1247995
(1979-85) Cable harness (same PN right or left)
22
1304436
(up to 1979) Corner cover
22
1247995
(1980 and later) Corner cover (1304436)
24
1213665
Outside trim plate LEFT, mirror delete (240/260, except 262C)
24
1213666
Outside trim plate RIGHT, mirror delete (240/260, except 262C)
24
1248118
Outside trim plate LEFT, mirror delete (262C)
24
1248119
Outside trim plate RIGHT, mirror delete (262C)
24
1204630
Inside trim plate LEFT, power mirror or delete (240/260 to 1979)
24
1294713
Inside trim plate LEFT, power mirror or delete (240/260 1980 and later)
24
1204631
Inside trim plate RIGHT, power mirror or delete (240/260 to 1979)
24
1294714
Inside trim plate RIGHT, power mirror or delete (240/260 1980 and later)
24
1248188
Inside trim plate LEFT, power mirror or delete (262C)
24
1248189
Inside trim plate RIGHT, power mirror or delete (262C)
25
1213332
Recessed washer for outside trim plate
26
956312
Screw for outside trim plate





240 Mid Power Mirrors (1986-91)
Mid-version power mirrors were divided by chassis number.
244: Division was before or after chassis number 378164 (mid-1989).
245: Division was before or after chassis number 840616 (mid-1989).

and LATE Power Mirrors (1992-93)


Power mirrors found on 1986-91 240 will have the above EARLY style 4-pole connector.
Power mirrors found on 1992-93 240 will have the above LATE style 6-pole connector.


Mirror Electrical 1986-91
Mirror Electrical 1992-93
Mid and Late 240 Power Mirror Exploded Views above.
NOTE: Mirrors found on 1986-91 240 used the EARLY mirror switch PN 1235091.
Mirrors found on 1992-93 cars used the LATE mirror switch PN 3540358.

Mid and Late Mirror Part Numbers
1
1312501
(1986-89) Rear view mirror LEFT, LHD, convex  (Chassis Note 1)
1
1312502
(1986-89) Rear view mirror RIGHT, LHD, convex  (Chassis Note 1)
1
1312503
(1986-89) Rear view mirror LEFT, LHD, flat glass  (Chassis Note 1)
1
1312504
(1986-89) Rear view mirror RIGHT, LHD, flat glass  (Chassis Note 1)
1
1372430
(1986-89) Rear view mirror LEFT, LHD, wide angle  (Chassis Note 1)
1
1312508
(1986-89) Rear view mirror LEFT, RHD, convex  (Chassis Note 1)
1
1312509
(1986-89) Rear view mirror RIGHT, RHD, convex (Chassis Note 1)
1
1372433
(1986-89) Rear view mirror RIGHT, RHD, wide angle  (Chassis Note 1)
1
1372420
(1986-89) Rear view mirror LEFT, RHD, flat glass  (Chassis Note 1)
1
1372432
(1986-89) Rear view mirror RIGHT, RHD, flat glass  (Chassis Note 1)
1
1372490
(1986-89) Rear view mirror LEFT, RHD (JPN)  (Chassis Note 1)
1
1372491
(1986-89) Rear view mirror RIGHT, RHD, (JPN)  (Chassis Note 1)



1
1372428
(1989-91) Rear view mirror LEFT, LHD, flat glass (Chassis Note 2)
1
1372427
(1989-91) Rear view mirror RIGHT, LHD, flat glass (Chassis Note 2)
1
1372430
(1989-91) Rear view mirror LEFT, LHD, wide angle glass (1312507)  (Chassis Note 2)
1
1372429
(1989-91) Rear view mirror RIGHT, LHD, convex glass (for vehicle with wide angle mirror on driver side) (Chassis Note 2)
1
1372431
(1989-91) Rear view mirror LEFT, RHD, convex glass (for vehicle with wide angle mirror on driver side) (Chassis Note 2)
1
1372433
(1989-91) Rear view mirror RIGHT, RHD, wide angle glass (1312514)  (Chassis Note 2)
1
1372420
(1989-91) Rear view mirror LEFT, RHD, flat glass (Chassis Note 2)
1
1372432
(1989-91) Rear view mirror RIGHT, RHD, flat glass (Chassis Note 2)
1
1372490
(1989-91) Rear view mirror LEFT, RHD (JPN) (Chassis Note 2)
1
1372491
(1989-91) Rear view mirror RIGHT, RHD (JPN) (Chassis Note 2)



1
3540192
(1992-93) Rear view mirror LEFT, LHD flat glass
1
3540191
(1992-93) Rear view mirror RIGHT, LHD convex glass
1
3540194
(1992-93) Rear view mirror LEFT, LHD, wide angle glass
1
3540193
(1992-93) Rear view mirror RIGHT, LHD, convex glass (for vehicle with wide angle mirror on driver side).
1
3540195
(1992-93) Rear view mirror LEFT, RHD, convex glass (for vehicle with wide angle mirror on driver side).
1
3540196
(1992-93) Rear view mirror RIGHT, RHD, wide angle glass
1
3540196
(1992-93) Rear view mirror RIGHT, RHD, wide angle glass
1
3540197
(1992-93) Rear view mirror RIGHT, RHD, flat glass
1
3540198
(1992-93) Rear view mirror LEFT, RHD (JPN)
1
3540206
(1992-93) Rear view mirror RIGHT, RHD (JPN)



3
1372203
(1986-91) Drive unit LEFT, LHD or RHD
3
1312916
(1986-91) Drive unit, LHD or RHD
3
3540751
(1992-93) Drive unit LHD or RHD
4
945828
(1986-91) ROUND connector male (4-pole white) on mirror harness. (Terminal: 2mm bullet)
4
945829
(1986-91) ROUND connector female (4-pole white) on switch harness. (Terminal 2mm bullet)
4
968397
(1992-93) RECTANGULAR connector male (rectangular 6-pole black) on mirror harness. Uses terminal 968373 (0,5-1,0mm²), 968374 (1,0-3,0mm²).
4
968396
(1992-93) RECTANGULAR connector female (rectangular 6-pole black) on switch harness. Uses terminal 946640, 969778 (0,5-1,0mm²), 965107 (1,0-2,5mm²).
5
949863
(1986-91) Screw M3x12
5
956053
(1992-93) Screw
6
1321694
(All) Rubber bellows
7
1312533
(All) Cap, LEFT, LHD



7
1312535
(All) Cap, RIGHT, LHD   (Alternate 1)
7
1312536
(All) Cap, LEFT, RHD   (Alternate 1)
7
1312534
(All) Cap, RIGHT, RHD   (Alternate 1)
7a
9142057
(All) Cap, LEFT, LHD   (Alternate 2)  (Chassis Note 2)
7a
9142059
(All) Cap, RIGHT, LHD   (Alternate 2)  (Chassis Note 2)
7a
9142060
(All) Cap, LEFT, RHD   (Alternate 2)  (Chassis Note 2)
7a
9142058
(All) Cap, RIGHT, RHD   (Alternate 2)  (Chassis Note 2)
7b
9432518
(All) Screw, LHD or RHD (Alternate 2)  (Chassis Note 2)
8
1312537
(All) Seal, LEFT
8
1312538
(All) Seal, RIGHT
9
1321061
(All) Clamping Ring



10
1325937
(1986-89) Mirror glass, LEFT, LHD or RHD, convex  (Chassis Note 1)
10
1325938
(1986-89) Mirror glass, RIGHT, LHD or RHD, convex  (Chassis Note 1)
10
1325941
(1986-89) Mirror glass, LEFT, LHD, flat glass  ((Chassis Note 1)
10
1325942
(1986-89) Mirror glass, RIGHT, LHD, flat glass  (Chassis Note 1)
10
1325943
(1986-89) Mirror glass, LEFT, LHD, wide angle  (Chassis Note 1)
10
1325944
(1986-89) Mirror glass, RIGHT, LHD wide angle  (Chassis Note 1)
10
1372302
(1986-89) Mirror glass, LEFT, RHD (JPN)  (Chassis Note 1)
10
1325940
(1986-89) Mirror glass, RIGHT, RHD (JPN)  (Chassis Note 1)



10
3518947
(1989-91) Mirror glass, LEFT, LHD, wide angle  (Chassis Note 2)
10
3518942
(1989-91) Mirror glass, RIGHT, LHD, convex   (Chassis Note 2)
10 3518948
(1989-91) Mirror glass, RIGHT, RHD, wide angle   (Chassis Note 2)
10
3518941
(1989-91) Mirror glass, LEFT, RHD, convex  (Chassis Note 2)
10
3518946
(1989-91) Mirror glass, RIGHT, RHD, flat glass   (Chassis Note 2)
10
3518945
(1989-91) Mirror glass, LEFT, RHD, flat glass   (Chassis Note 2)
10
3514944
(1989-91) Mirror glass, RIGHT, RHD (JPN)   (Chassis Note 2)
10
3518949
(1989-91) Mirror glass, LEFT, RHD (JPN)  (Chassis Note 2)



10
3538982
(1991-93) Mirror glass, LEFT, LHD, flat glass
10
3538983
(1991-93) Mirror glass, RIGHT, RHD, flat glass
10
3538984
(1991-93) Mirror glass, RIGHT, LHD, convex
10
3538976
(1991-93) Mirror glass, LEFT, RHD, convex  (for vehicle with wide angle mirror on driver side).
10
3538977
(1991-93) Mirror glass, RIGHT, LHD, convex
10
3538980
(1991-93) Mirror glass, LEFT, LHD, wide angle
10
3538981
(1991-93) Mirror glass, RIGHT, RHD, wide angle
10
3540813
(1991-93) Mirror glass, LEFT, RHD (JPN)
10
3538979
(1991-93) Mirror glass, RIGHT, RHD (JPN)



11
1312797
(All) Inside trim plate LEFT, power mirror or mirror delete
11
1312798
(All) Inside trim plate RIGHT, power mirror or mirror delete
12
968009
(1986-91) Screw
12
972411
(1992-93) Screw
13
941269
(All) Sealing grommet
14
1312801
(All) Sealing plug
15
1312811
(All) Sealing plug



16
1235091
(1986-91) Switch
16
3540358
(1992-93) Switch
17
1235101
(All) Nut for switch
18
1259492
(1986-91) Cable harness LEFT
18
1259493
(1986-91) Cable harness RIGHT
18
3544552
(1992-93) Cable harness (one harness both mirrors)
CHASSIS NOTE 1:  244 Chassis Number to 378164, 245 Chassis Number to 840616.
CHASSIS NOTE 2:  244 Chassis Number 378165 and later, 245 Chassis Number 840617 and later.
Chassis number division occurred in mid-1989.







R E P A I R S  a n d
E L E C T R I C A L   S T U F F

240 Early (Alternate 2) Power Mirrors (up to 1985)

   

Since there was a serious lack of info available, I decided someone needed to find a way to disassemble these mirrors properly and publish that info.
So I acquired a cheap used one which could be sacrificed for the pursuit of knowledge if needed. 

Why would you ever need to disassemble one of these mirrors?
Hopefully you won't, but there are a few reasons you might need to. The mirror glass could become broken. The internal drive motor unit could stop working. It's replaceable.

The Greenbook was not very helpful.
 

So here's the best method I have found for disassembly.
Thank you goes to cleanflametrap for helping to figure out how to do this, hopefully without damage.
The mirror glass is pretty thick and will take a lot of force to break (but it can). The glass is held onto the backing plate with two sided tape, which you will probably not be able to separate while the backing plate is still attached to the mirror. So I believe it's necessary to remove the mirror and backing plate as one unit FIRST.



Have a look at these FOUR PEGS on the back of the plate. Those pegs snap into those four holes in the mirror drive motor unit. Removing this mirror/plate is done by pulling it off.

Yes, you will be pulling it until those pegs pop out.
 


When you pull, make sure you only pull from the TOP or BOTTOM of the mirror. Or alternately from the TOP, then BOTTOM.  Keep pulling until it pops loose.
CAUTION: If you pull from the LEFT or RIGHT like I did, you'll probably break the glass.
It may take a LOT OF FORCE to break it free, so don't give up.
 

The rubber boot will be trapped/pinched under the DRIVE MOTOR UNIT around the edges.
Remove the two screws holding the drive unit.  Flex the holes in the rubber boot so you can see those screws. Use a Phillips screwdriver to remove them.
Once the DRIVE MOTOR UNIT is loose, the rubber boot will come free.

 

At this point the inner shell will simply lift out and the DRIVE MOTOR UNIT can pass through the hole. 
If you need to replace the DRIVE MOTOR UNIT, there's a 4-pole plug that you'll need to unplug. The plastic corner piece at the top right corner lifts out to make more room to mess with that connector.





ELECTRICAL STUFF
I thought I would document some electrical information on this mirror.  I think it'll come in handy. 

Here's another photo of the DRIVE MOTOR UNIT. 
I flipped it over so you can see the other side. This is the side of it that normally faces the mirror front.
I won't be taking it apart, but as you can see, there are FOUR wires. Two go to the motor (inside that large bulge) and two go to a solenoid (the smaller bulge). 
I'll explain more below of what I've leaned about how these four wires make this thing work.






You can refer to the diagram below and follow along.
Pin 1 on this switch for a 240 will always be POWER.
Pin 4 for a 240 will always GROUND.
LEFT-RIGHT:
When the switch joystick is pushed LEFT or RIGHT, a power and ground signal is sent to the Drive Motor Unit through Pins 3 and 5. The internal design of the switch allows for the polarity of these signals to be swapped, which allows the motor to run in forward or reverse (for left or right), depending on the direction the joystick is pushed.

UP-DOWN: For the UP or DOWN function to work, there's a SOLENOID which receives a power and ground signal through Pins 6 and 2. The ground signal is a constant ground coming through the BROWN wire from Pin 2 of the switch. Pin 2 gets its ground from Pin 4, because Pins 2 and 4 are connected internally.  The power signal comes through the WHITE wire from Pin 6.  This power signal is activated only when the switch is pushed toward the UP or DOWN direction, because these movements connect Pin 6 to Pin 1 inside the switch, sending power to the SOLENOID.

When the SOLENOID is energized by the WHITE wire (due to the joystick moving UP or DOWN), it triggers a function change in the Drive Unit mechanism, which changes the RIGHT-LEFT function to an UP-DOWN function. If you listen carefully, you can hear the audible click as the solenoid makes the change. This click can be heard in the below video.

240 EARLY AND MID MIRROR WIRING DIAGRAM
Early Mirrors to 1985
and Mid Mirrors 1986-91



NOTE: Sometimes this mirror can fail to make the necessary SOLENOID change.  If you experience a glitch where UP-DOWN works fine, but pushing the stick LEFT or RIGHT only makes the mirror rotate UP or DOWN, this is caused by the SOLENOID failing to make the needed function change. 
The cause of this glitch will likely be one of two issues.

1.  The power and ground through the WHITE and BROWN wires (switch pins 6 and 2) to the mirror SOLENOID is not completing the circuit. This can be an interruption in the switch due to dirty gummed up internals or it can be a power or ground interruption at the switch connector.

2. Or the SOLENOID is sticking, maybe just because it's old.  If you give the mirror a TAP and the LEFT-RIGHT function returns, this was probably the reason.


Click HERE to see testing information for early 240 mirror SWITCHES.


It's Time for a VIDEO
Volvo 240 Early Power Mirror Function Test

The Drive Motor Unit in this Volvo mirror has one motor, which can perform two separate functions.
Function 1: LEFT - RIGHT adjustment.
Function 2: UP - DOWN adjustment.
There is a SOLENOID inside the Drive Motor Unit, which switches between the two motor functions. You can hear the audible click of the solenoid as the function changes.

https://www.youtube.com/watch?=8&v=4JaHF6SgKlk


12V DC POWER SUPPLY
If your work or hobby involves testing stuff like this, a DC Variable Power Supply can be a big help. These can be be found fairly inexpensively as used items on eBay or other places.  This one is an old-school analog type. I think most available these days will have digital displays.
 






R E P A I R S  a n d
E L E C T R I C A L   S T U F F


240 Late Power Mirrors (1992-93)
 


Why would you ever need to disassemble one of these mirrors?
Hopefully never. But there are a few reasons you might need to. The mirror glass could become broken. The internal electrical drive motor unit could stop working. And it's replaceable.

   Volvo Instructions are NOT helpful.  Don't attempt to remove the mirror glass like this.  BAD!  You'll see why further below.



If you're familiar with this type of mirror back, you should know the late 240 POWER mirror is NOTHING like this.  This image is what you'll find in a MANUAL mirror.
This manual glass is really easy to remove.  You just insert a flat screwdriver into a hole on the bottom of the mirror and rotate that white collar.  That hole on the bottom is present on the late power mirror just to confuse you, but it's useless unless you have a manual mirror.
Volvo decided instead their late POWER mirrors would be stupid and difficult.


The LATE 240 power mirror glass removal is exactly the same as this S60/V70 video.
Except DON'T BELIEVE him when he says it's easy to open those clips.
Also DO NOT forcibly pull the glass off like he does, you'll risk DESTROYING your DRIVE MOTOR UNIT.  You'll see that carnage further below.

https://www.youtube.com/watch?v=cKNQFUa6ilE



The rest of that video is pretty useful, but I'll reinforce your understanding with some photos of my own below.


HERE ARE MY PHOTOS
Yes, these photos appear a bit out of order.  I have already removed these parts, but showing you the parts removed first will make it easier to see what you need to see.


As you saw in the video, the mirror glass back panel snaps onto the Drive Motor Unit.
Those four LOCATING PINS (circled in RED below) insert into the four holes on the Drive Motor Unit.
Those EIGHT plastic "L" CLIPS snap over the outer edge of the Drive Motor Unit. So those EIGHT clips must be released.
 
The best method to do this is similar to how the video describes, but I found those plastic clips to be very tight and it took a great deal of force to shove a small screwdriver under them and bend them open.  You will undoubtedly be concerned about bending them so much that you might break some off.  My advice is DON'T BE CONCERNED about that. Bend them so they are as free from holding onto the Drive Motor Unit as you can. If you break one or two, so what?  Otherwise you may be tempted to just yank the mirror off in frustration. 
This Drive Motor Unit is way TOO FRAGILE for that.

 

While you look at that image of the DRIVE MOTOR UNIT above, you can study how different it is from the early 240 power mirror Drive Unit.  This unit above has TWO MOTORS; One motor for LEFT-RIGHT and one for UP-DOWN. If you go back and look at the early type, it has only ONE MOTOR.

THIS DRIVE UNIT IS FRAGILE!
Here it is.  Here's a close-up photo below of the carnage that's waiting for you if you try to yank the mirror off.

That BROKEN PART can best be described as a rack (as in rack and pinion). That rack is moved by a gear on that motor, controlling the LEFT-RIGHT movement.  This break destroyed the ability for the Drive Unit to control the LEFT to RIGHT adjustment.

So I think now you probably understand the importance of NOT pulling on this mirror.
So I'll return to showing you some photos below.
 


More images showing how the locating pins fit the Drive Unit and some close-ups showing those "L" clips.
 


Once the mirror is free, you can flip it over and see the two heater connections.  Those simply pull off.




There are three screws holding the Drive Unit. 




And there is a 3-pole connector on the reverse side of the Drive Unit.
There are two plastic hooks retaining it, so bending those a bit will allow the removal of this plug.







ELECTRICAL STUFF
Here's some electrical information on this late mirror.   

You can refer to the diagram below and follow along.
Each mirror has a Drive Motor Unit. Each Drive Unit has two drive motors. One motor moves the mirror LEFT-RIGHT and the other motor moves it UP-DOWN.
For each pair of motors there are three wires. One wire goes to the LEFT-RIGHT motor, one goes to the UP-DOWN motor, and one wire goes to the other sides of BOTH motors.

NOTE: If you study this closely, you'll see that the two switches appear to be wired similarly to each other, however the POWER and GROUND inputs (Pins 1 and 4) are OPPOSITE. For these circuits, the LEFT switch gets power through Pin 4. The RIGHT switch gets power through Pin 1.
 
LEFT-RIGHT:
When the switch joystick is pushed LEFT or RIGHT, a power and ground signal is sent to a pair of wires to one of the Drive Motors. We'll call this one the LEFT-RIGHT MOTOR. This power and ground signal goes through Pins 3 and 5 of the switch. The internal design of the switch allows for the polarity of these signals to be swapped, which allows the motor to run in forward or reverse (for left and right), depending on the direction the joystick is pushed.

UP-DOWN:
When the joystick is pushed UP or DOWN, a power and ground signal is sent to the UP-DOWN MOTOR through Pins 5 and 6. Again, the internal design of the switch allows for the polarity of these signals to be swapped, which allows the motor to run in forward or reverse (for up or down), depending on the direction the joystick is pushed.

The internal design of the switch will only allow for one motor in the Drive Unit to be energized at a time, so the mirror moves only in one direction at a time.



MIRROR GLASS HEATER: Late 240 mirrors are designed to be heated for use in very cold weather. A switch on the dash may be triggered, which activates a relay.  The relay sends power to heating elements inside the mirror glass.


240 LATE MIRROR WIRING DIAGRAM (1992-93)



Click HERE to see testing information for LATE 240 mirror switches.










Volvo 240 Mirror Electrical Switches

I've began looking closely at 240 mirror switches, since I could find very little useful information on-line and the info I did find seemed to be conflicting and inaccurate.
So this section will try to straighten out errors or misconceptions and hopefully provide something useful and accurate.

BASIC SWITCH INFORMATION
The switches were normally mounted in the 240 center console either on the FRONT surface or TOP surface.
 

MOUNTING POSITION IN CENTER CONSOLE
Those small holes next to the larger holes play an important role.  The small hole matches up to a locating pin on the switch to keep the switch pointed in the proper direction.
The proper direction is shown below. The right and left switch is the same, but they're mounted OPPOSING each other.
 

If you need to drill holes into a center console to mount these switches, here is a diagram from Volvo.




EARLY 240 SWITCH
This early mirror switch is identified in Volvo parts catalogs as PN 1235091. This switch has a dark gray colored bottom, although it will appear black in most photos. This switch has been NLA as a new part for a number of years.
Parts catalogs show it is used for all 240/260 power mirrors from 1975 through 1991.



LATE 240 SWITCH

This late switch is identified in Volvo parts catalogs as PN 3540358. It has a red colored bottom. It has also been NLA as a new part for a number of years.
Parts catalogs show it's used in the 1992-93 240 only.  This switch is externally identical to the early switch, except for a couple of differences.  The first obvious difference is the red colored bottom.



EARLY versus LATE SWITCH COMPARISON
Other than the gray or red colored bottom, the first clue that these switches are different comes when you look at the contacts. 
The early switch has 6 contact pins and the connector plug uses 6 wires.
The late switch only has 5 contact pins and the connector uses 5 wires. 
The connector housing is the same for both switches, however the wiring order is not the same.

 

CONNECTOR WIRING
The below diagram shows the connector for an early power mirror switch. The two connectors for early switches are wired the SAME LEFT versus RIGHT.
The wire harness for a pre-1986 240 is even the same part number for LEFT or RIGHT. 

EARLY 240 SWITCH WIRING



CONNECTOR WIRING
The connectors for late switches are wired DIFFERENTLY LEFT versus RIGHT.

LATE 240 SWITCH WIRING







SO ARE THESE SWITCHES INTERCHANGEABLE?


The wire color stickers showing are identical on both switches, although the colors don't actually match all actual wire colors.
There are a few people who claim these switches are interchangeable, but after you see the info below, I think you'll disagree (like I do).
If you can provide any input, please email.
The search for the truth continues.
I have placed a side-by-side internal switch function diagram at the bottom of this section.


CONTINUITY TESTS
I began testing EARLY versus LATE 240 switch continuity.
The below continuity tests were done to see what connects in the 6 pins at various toggle positions. 
If you test a switch and get different results, it might need some internal cleaning.  Otherwise, contact me with your results. 

A good guide on disassembling and cleaning these switches can be found here.
GUIDE: How to CLEAN your 240 Power Mirror Switches: https://forums.turbobricks.com/showthread.php?t=352670

Early 240 Switch Continuity
(when positioned/mounted for the left mirror)

PINS
1 to 2: —

1 to 3: DOWN and LEFT.

1 to 4: —

1 to 5: UP and RIGHT.

1 to 6: DOWN and UP.

2 to 3: UP and RIGHT.

2 to 4: at NEUTRAL position (2 and 4 are COMMON internally).

2 to 5: DOWN and LEFT.

2 to 6: —

3 to 4: UP and RIGHT.

3 to 5: —

3 to 6: DOWN.

4 to 5: DOWN and LEFT.

4 to 6: —

5 to 6: UP.

 



EARLY 240 SWITCH INTERNAL CIRCUITS

While cleaning the inside of this early switch I decided to map out the circuits and show you where each pin goes through the switch.
This switch is VERY DIFFERENT internally from the LATE switch shown further below.
DOWN
UP
LEFT
RIGHT






EARLY SWITCH FAULT TRACING
The wire order will be the same for a left or right switch in a 240 up to 1991.
Pin 1
will always be POWER input for both right and left side.  Pin 4 will always be GROUND input.
You can use this table below to test for power and ground supply of pins 3, 5 and 6 at the switch or from the switch to the mirror. Wire colors below are those found at the switch connector for a 240 up to 1991.
Early mirror wiring diagram can be found HERE.
FOR LEFT MIRROR
Switch Position
12V (+) to Motor
Ground (-) to Motor
12 (+) to Solenoid
LEFT
Pin 3 GREEN
Pin 5 YELLOW

RIGHT
Pin 5 YELLOW
Pin 3 GREEN

UP
Pin 5 YELLOW
Pin 3 GREEN
Pin 6 WHITE
DOWN
Pin 3 GREEN
Pin 5 YELLOW
Pin 6 WHITE

FOR RIGHT MIRROR
Switch Position
12V (+) to Motor
Ground (-) to Motor
12 (+) to Solenoid
LEFT
Pin 5 YELLOW
Pin 3 GREEN

RIGHT
Pin 3 GREEN
Pin 5 YELLOW

UP
Pin 3 GREEN
Pin 5 YELLOW
Pin 6 WHITE
DOWN
Pin 5 YELLOW
Pin 3 GREEN
Pin 6 WHITE






LATE 240 Switch Continuity
(when positioned/mounted for the left mirror)

Note: There is no Pin 2, so that pin is N/A.

PINS
1 to 2    N/A.
1 to 3    RIGHT.
1 to 4   
—
1 to 5    DOWN and LEFT.
1 to 6    UP.
2 to 3    N/A.
2 to 4    N/A.
2 to 5    N/A.
2 to 6    N/A.
3 to 4    LEFT.
3 to 5   
—
3 to 6   
—
4 to 5    UP and RIGHT.
4 to 6    DOWN.
5 to 6   
—

 


LATE 240 SWITCH INTERNAL CIRCUITS

While cleaning the inside of this late switch I decided to map out the circuits and show you where each pin goes through the switch.
This switch is VERY DIFFERENT internally from the EARLY switch shown above.
DOWN
UP
LEFT
RIGHT






A good guide on disassembling and cleaning these switches can be found here.
GUIDE: How to CLEAN your 240 Power Mirror Switches: https://forums.turbobricks.com/showthread.php?t=352670

LATE SWITCH FAULT TRACING
The wire order in the connectors will be different between the LEFT and RIGHT switch in a LATE 240.
You can use this table below to test for power and ground supply of pins 3, 5 and 6 at each switch.
Wire colors below are those found in a switch connector for a 1992-93 240.
Late mirror wiring diagram can be found HERE.
FOR LEFT MIRROR
Pin 1 is connected to GROUND.
Pin 4 is connected to POWER.
Switch Position
12V (+)
Ground (-)
LEFT
Pin 3  BLUE/WHITE
Pin 5  BROWN/WHITE
RIGHT
Pin 5  BROWN/WHITE
Pin 3  BLUE/WHITE
UP
Pin 5  BROWN/WHITE Pin 6  GREEN/WHITE
DOWN
Pin 6  GREEN/WHITE
Pin 5  BROWN/WHITE

FOR RIGHT MIRROR
Pin 1 is connector to POWER (the opposite of the left mirror switch).
Pin 4 is connected to GROUND.
Switch Position
12V (+)
Ground (-)
LEFT
Pin 3  BLUE/WHITE
Pin 5  BROWN/WHITE
RIGHT
Pin 5  BROWN/WHITE Pin 3  BLUE/WHITE
UP
Pin 5  BROWN/WHITE Pin 6  GREEN/WHITE
DOWN
Pin 6  GREEN/WHITE
Pin 5  BROWN/WHITE



EARLY vs. LATE SWITCH FUNCTION COMPARISON
Here's a side-by-side comparison of the internal functions of these two switches.
If you're of the opinion that these switches are interchangeable or somehow compatible for some sort of retrofit, please contact me and help me understand.  I just don't see it happening.








N O N - V O L V O   S W I T C H E S

  Porsche and Saab Mirror Switches
Porsche PN 911 613 115 00
(91161311500)
1974-75 911 Base, Carrera, S  (Joystick).
1976 912 E.
1976-86 911 + Carrera, Carrera Turbo, S, SC & more.
1977-82 924, 924 Turbo.
1987-88 924 S  (Joystick).
1978-86 928, 928 S.
1983-85 944 (produced through 1/85).
Saab PN 85 31 204
(8531204)
1979-93 900 base, EMS, GL, GLE, GLI & more (Joystick).
1994 900S, 900 Turbo (Joystick).



This switch below is the exact switch
(offered NEW at various places on-line) that matches the above Porsche or Saab part numbers. 
There is absolutely NO DIFFERENCE between a Porsche or Saab switch, except possibly for the sticker.
They are the SAME SWITCH.
 

Examples of the above switch used in Porsche
And YES, this switch was used in most Porsche models with a left-right selector switch so ONE switch worked for both mirrors.
         


Examples of the above Switch used in Saab 900
I believe all Saab 900 models using this switch used TWO switches on the dash. They were mounted on the dash, one of each side of the instrument cluster (dash pic below for reference).
        


SAAB/PORSCHE versus VOLVO
There have been varying opinions and beliefs published on-line that say the Porsche and Saab switch cannot be interchanged with an early Volvo switch.
That information is WRONG.

The Porsche/Saab switch is IDENTICAL to the EARLY VOLVO switch in EVERY way, except for the length of the joystick. 
The Saab/Porsche joystick is longer, however the joysticks are fully interchangeable if you dismantle the switch.



SAAB 900 POWER MIRROR DIAGRAM
The below Saab 900 diagram uses the same switch circuits as the Early and Mid 240 power mirrors. The Saab mirrors are constructed with a Drive Motor Unit that works exactly the same as the Early or Mid Volvo. When you compare the two wiring diagrams you'll see that they're identical, except for one ground wire on each switch.  This switch in a Saab does not use Pin 2 (which is a source to ground).  Instead the BLACK ground wire to the SOLENOID in a Saab is grounded to the car chassis directly.





PORSCHE POWER MIRROR DIAGRAM
The below Porsche wiring diagram uses the same switch circuits as the Early or Mid 240 power mirrors. These Porsche mirrors are constructed with a Drive Motor Unit with ONE MOTOR and a SOLENOID that works exactly the same as the Early-Mid Volvo and Saab. When you compare the diagrams with Volvo or Saab, you'll see that they're identical in operation, except that the Porsche uses only ONE switch. It seems that some Porsche cars had only a driver side power mirror (1978-79) and others had two power mirrors with ONE mirror switch that used a LEFT-RIGHT SELECTOR SWITCH (1978-86).  

SWITCH ORIENTATION
If you're curious as to the orientation of this switch when it's mounted, it points the same direction as an EARLY or MID 240 LEFT SWITCH relative to its UP-DOWN and RIGHT-LEFT movements.










A L T E R N A T E   V O L V O  
M I R R O R    S W I T C H E S


Can a different switch be used with 240 mirrors?
YES!
For those of you who want something different, I think it might be an interesting modification to move the 240 mirror switches to a better location. 
So how about putting them on the door,
like they do on 700/900/850 models?

These switches below are used in 700/900/850 models.  There are TWO versions.
PN 1347065:
  Volvo 740, 760, 780 through 1991. This switch works for all 240 EARLY or MID power mirrors (used in 240 models up to 1991).
PN 3454090: Volvo 740, 760, 780, 850, 940, 960 from 1992 and later.  This switch works for all 240 LATE power mirrors (1992-93 240).

 

PHOTOS:  #1: 740.  #2: 780.  #3: 850.
   


ELECTRICAL STUFF
Here's some electrical information for the EARLY mirror switches.
PN 1347065:  Volvo 740, 760, 780 through 1991.
This switch works for all 240 EARLY or MID power mirrors (used in 240 models up to 1991).

This diagram below shows the internal switch functions of the EARLY 700 switch.
It's almost exactly the same as an EARLY 240 switch, except for changes in pin numbers.
Power input goes through Pin 4, Ground input is through Pin 2.
Outputs to the mirror are Pins 1, 3 and 5.



EARLY 700 SWITCH MOUNTING POSITION AND INTERNAL CIRCUITS
It matters which direction this switch is pointing when mounted.
The below images show a proper mounting position for a LEFT switch.
When in this position the part number will be visible to the rear. 
 



EARLY 700 SWITCH INTERNAL CIRCUITS

The below images show the internal contacts inside an EARLY 700 switch.
 I mapped out the circuits below help you understand where each one goes through the switch.
These images show a switch in the proper mounting position for a LEFT mirror.
DOWN
UP
LEFT
RIGHT






If using these EARLY 700 switches to control EARLY or MID 240 power mirrors, here is the wiring information you'll need to know.
This image below is a 700 switch panel. The mirror switches are installed in a 740 as shown below from the factory.
If you have read about 240 mirror switches above, you'll know that the LEFT and RIGHT switches must be mounted opposing each other. This is not how these 700 switches are originally mounted.  So you will need to turn the RIGHT switch 180 degrees.




These switches are made to insert in ONE DIRECTION. There's a notch in the switch that fits a peg inside the well. When turning this switch around, it'll go in most of the way, but the peg will interfere.  So a remedy is to cut out that peg. A sharp Exacto knife works well to shave it down.



Once the right switch is turned 180º, you can use the below diagram to see what wires originally intended for the 240 switches can now go to the 700 switches.


Your feedback is welcome: CONTACT





 


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