Please Help
I own a 1996 S320
The passenger side rear view mirror failed, electrically. All the wires shorted out for the motor and glass element. This blew the fuse several times. Thanks to Phil I replaced the mirror assembly. After installing the new mirror assembly, I can not control the up and down action. Left and right work fine. The drivers side works fine. I installed the old motor with the same results. I can here relays under the passengers foot rest. I opened up the relay box. All the relays and circuits appear ok. No burned contacks. The relay action is the same for both mirrors. The relays opens and closes but the mirror will not move up and down. I can adjust the mirror manually.
Thanks
Dave

ps I miss my 123

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)

Any help yet

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)

Jiggle the wires!

This is one of the most common faults on W140s: self-destructing foldable mirrors. I guess M.B. did not do a good on the design of the folding mechanisn (as it did on most of the rest of the car).

When the side mirrors fail, usuallly the cables are toasted or cracked by the folding action in more places than it is usally visible. It is usually recommended to change the housing, motors (if defective) AND the cables from inside the door all the way to the mirrors.

__________________
A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]

I checked out all the wires in the door. Rung them out with a meter and checked for grounds.

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)

Try hooking up a new mirror switch at the central console. The switches tend to short circuit too when there is a folding failure at the mirror base.

__________________
A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]

I looked over the switch and I am not sure how to remove it.

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)

Update
Found the bidirectional IC chip failed. This is located in a enclosure with other relays and componets under the passengers foot compartment.
Under $10.00 part.
PS I miss my 123

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)

And IT misses YOU...
Gilly

__________________
Click here to see the items I have up for auction at EBay

Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)

What's a bi-directional IC chip?

In my 93 SD, right side mirror glass moves but the housing won't fold. Moves a little bit in but won't move back out.

Sixto
93 300SD

It is a 16 pin IC chip mounted on a circuit board.(small electronics). My memory control unit has 2 of these with other electronics.
The fold in of the mirrors is not part of the memory recall system. You may have a motor or hinge that is binding up.

__________________
2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)