My right side mirror doesn't fully function when I use the adjustment switch on inside of car. It seems to move up and down and out but not back in. Sounds like the gears inside may be stripped? I hear it clicking but no action. I accidentally hit it when I was wiping and washing the car....

Any buddy have a procedure to fix? Perhaps a link?

I have done a search but not very successful.

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Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta

The adjustment pins are broken, Motor replacement is the only fix I know of. ( My 97 C280 has broken pins )

Does this car have auto adjust mirror ? ( if you have 1,2,3 and green button below the seat adjuster switches you have auto adjust. ) The auto adjust mirror motor has a 6 or 7 wires, regular 3 or 4.

Motors are the same left to right and across a few platforms, at least the 97 SL , C and E will interchange if auto adjust is considered. Electrically the auto / manual adj motor setup is different and won't interchange.

What? The price of 97 C, E, SL platforms for the motors on the mirrors are progressively more expensive...are your sure I can use a C mirror motor on an E platform car? That would be great...I can save myself $50.....

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Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta

If you swap parts from a with memory to with memory it will work ( or no memory to no memory ) I've tried to swap a 97 E320 memory motor to a 97 C280 non memory, physically they bolt up but electrically won't work properly.

Have a look at the parts catalog on this or other sites and compare part numbers. for 97 ish, 202 is C class , 210 E class , 129 SL class, I'd expect 170 SLK Class and 140 S Class to have a good chance of interchanging.

Taking the mirror apart is somewhat difficult to describe but not bad if you see a breakdown / look at physical parts.

Center the mirror using the adjuster switch ( be sure to do the same with the new one otherwise it will break. ) DO NOT fold the mirror housing fully forward as the manual says, the casting might break at the spring mount. Fold the mirror housing forward just enough to remove, unlatch the mirror cover clip. Fold the mirror housing back to the normal position. Pull the cover off to the outside of the car, be sure to watch the glass so it clears the housing.

The mirror glass is on a plastic backing, this backing has 2 clips ( sort of like a partial paper clip ) holding the backing to the round motor, unlatch these clips and remove the backing / mirror.

Mark the top of the motor, look at wiring plug location, these are interchangeable left to right but have different clock positions. Looking through the motor, you will see 3 screws, remove these and motor will come off, unplug the wire.

After everything is back together except for the cover, center the motor so the glass clears the cover as it is slid on.

Go to the Self serve junk yard and snip off a connector from W140. Plenty to choose from.. Assuming you are in the lower tip of california. Go to the Chula Vista yard...

Recently Added Vehicles | LKQ Pick Your Part - Chula Vista | LKQ Pick Your part

If this helps any, this how I fixed the rubber seals on a late model W140, but the connector disassembly is of help to you. You just have to solder the new pin on..

DIY Side mirror rubber seal fix for late model W140's - Mercedes-Benz Forum

Martin