vadim

(Sorry if this has already been sorted out - could not spot anything relevant)

Is anyone aware of a solution to the old problem - memory mirrors drifting off their saved position? It has become my morning routine to press and hold the memory button while the engine warms up - it takes care of the drift, but this is plain ridiculous!

The tech at the dealer where I service my car had no clue (not surprising, as he knew nothing about the very problem, either).

TIA.

revstriker

I had this problem with the driver's mirror. They replaced a part during the regular service and it stopped.... for awhile. However, it does now drift again, so I too find myself hitting the memory button to "re-set" my mirror.

MB-BOB

memory module replacement in the doors. Had it done on mine April 2003, and the mirrors no longer drift (2 1/2 years and counting)...

vadim

Bob,

do you still have the service records? What was the exact description? TIA.

MB-BOB

Found it...
"Door control modules losing memory... perform power mirror function test and found R/F Int losing memory. Remove and replace door panels and replace both Ft door control modules."

Parts #203-820-14-85 and #203-820-15-85

Hope this helps.

vadim

Thanks! Hope it will help

Mark08859

Much like the windows, there seems to be a procedure to reset the memory. When I get drifting (be it mirrors or seats, etc.), first set everything the way you want it. Second, have your front driver's seat go forward all the way and hold it for about ten seconds. Then have the seat go all the way back and hold it for 10 seconds. Remove the key from the ignition. After a few seconds re-insert the key, hopefully, all settings will return to normal.

MB-BOB

Yes, good procedure for resetting the seat memory, but this thread is about outside mirrors that drift out of set parameters over time. This seems to be a common problem for some owners with the full memory package.

revstriker

Maybe I'm reading it wrong, but I think we might be talking about 2 different things. On my car, both times, it's the mirrors that drift (I believe that it is caused by the door opening and closing) from where they were set. When I hit the memory button, it puts the mirror right back to where I had programed it. In my car, I am not losing my memory function, but rather the mirror is moving after I have set it.

FrankW

I've been wanting the dealer to fix this twice, but both time they said there was no problem with it

YeeHaw

so they are saying the mirrors are supposed to drift...german engineering at its best like the lever on an ice cream machine (from an infiniti radio commercial)

benzmodz

Sounds like one of those "shhh-go away" faults not unlike the excessive timing chain noise when the M111 starts up.

There are some faults that Mercedes know about and dont consider it important enough to resolve as the intervention of the owner can easily resolve it.

So the solution from the workshop is to "modify the owners expectations"

FrankW

it's more like the techs are too dumb and couldn't "replicate" the complain.

MB-BOB

Franks, there is a service advisory within the MB hierarchy about this. Ask your dealer if they are too lazy to read their campaign notices, and quote the part numbers referenced in my post above.

gaiex

My rigth mirror have a similiar problem, when I put reverse (with mirror parking help on) the mirror points down, but when I put 1st gear it goes up only a little and never to the memory position! then I push the memory button to make it go to the memory position and nothing!!!!
I have to push the mirror button to make it go up!!!

My dealer, first reprogramed the mirror and it turned to be ok, but only for 1 day, than it starts not going all up, and after some reverses its all turned down!
I tried to memorize new positions but its the same thing!!!
Now, my dealer says that I have to replace the mirror, but I heard here that could be the memory module in the door, does the dealer can check where is the problem??
I paid for a electric instalation check (CAN readings, etc...) in my last dealer visit, but I don't know if it was relationed to this problem

I was thinking in buying the electric folding mirrors from Steve, this could be a faster way of doing it

MB-BOB

gaiex, please go to the top of this thread and reread from the top down, a bit slower this time. All your answers are contained within.

gaiex

So, only the control modules are necessary!?
But my problem is a little bit different, my memory is still there when I press the memory button, the mirror starts to go up but it doesn't go all up! and sometimes it stay turned down
Its the same with you guys? not what I readed

revstriker

Ok. As I stated earlier, my problem was NOT that my car was losing memory. When I would hit the button, the mirrors would move to where they should be. But once set, they would drift (mainly I suspect from opening and closing the door).

I looked up my service report and here is mine:

L/Outside Mirror keeps drifting - Have to keep resetting.
88-3476 Replace Left Outside Mirror Motor
Parts # 203-820-22-42 Description: Electric Motor

This repair worked great on mine. I had it done in April of 04. However, it has started drifting again. I'll complain again when I bring the car in for service next time (next few months).

My guess is that whatever holds the mirror in place gets weak after awhile.

gaiex, this is just a guess, but it sounds like it could be the mirror motor or the memory module on yours as well. Either way, I'd bring it in and have them check both (I don't have the part number for the "right" mirror motor, but they should be able to find it from the "left" one).

Good luck, and let us know how you make out.