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w203 C320 Passenger Side Mirror Memory Problem

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Old 07-21-2014, 09:10 AM
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2003 C320
Question [SOLVED] w203 C320 Passenger Side Mirror Memory Problem

Hi;
My car has got a driver side seat memory option.
Passenger side mirror is working well with control switch (up-down,in-out).
But it isnt working with memory switch. Driver seat and driver side mirror and streering whell are working well with memory switch.
What is the problem? Any ideas?

Last edited by afurkan; 07-25-2014 at 12:29 PM. Reason: solved
Old 07-23-2014, 04:02 PM
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Today I found fault.
I connected my car with StarDiagnosis. Checked rigth door control ünit.
Control unit says to me, Right Exterior mirror; up-down potantiometer is broken or shortcut.
in-out potantiometer is broken or shrotcut.
I will try to fix motor. If I can't fix it, I will gonna get a new one.
Old 07-23-2014, 04:19 PM
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Glad you found the problem. I am dealing with why my seat doesn't move when I open the door on the easy entry feature. Good luck with the fix.
Old 07-24-2014, 02:42 AM
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Memory mirrors have two potentiometers that feed analog position data back to the door control module. These are two terminal devices, with one side connected to ground, and the other side connected to the door module.

The wiper surface can become dirty or the wires on the gimbal assembly break. Clean the pot with alcohol, and repair wires as necessary. If the car has folding mirrors, the wires in the harness between the mirror and door edge often break and need replacement.
Old 07-24-2014, 03:16 AM
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Originally Posted by Moviela
Memory mirrors have two potentiometers that feed analog position data back to the door control module. These are two terminal devices, with one side connected to ground, and the other side connected to the door module.

The wiper surface can become dirty or the wires on the gimbal assembly break. Clean the pot with alcohol, and repair wires as necessary. If the car has folding mirrors, the wires in the harness between the mirror and door edge often break and need replacement.
Thank you Moviela, These are good information for fixing the problem.
Yes, I have a folding mirrors.
Firstly, I will clean two potantiometers surface.
Later, I will remove door panel and mirror for check cables.
I will notify in this topic.
Thanks...
Old 07-25-2014, 05:12 AM
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I cleaned pot with Contact Sprey yesterday. But it cant help to fix problem.
I will remove door panel+mirror and check cable today.
Old 07-25-2014, 12:28 PM
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Solved

Yesss,
I solved the problem. Problem is cutted cable such as Moviela said.

First step remove door panel and access to door control unit. Unplug two mirros sockets from door control unit.









Next step: Check all cables with multimeter (shortcut detection mode)









Ooooppppss. The brown cable is not beeping.



Brown and other brown-yellow cable are cutted.




I fixed them.



And seat memory and reverse mode on right mirror are working well.
Thanks...

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