I have a bad motor on the rear left window in a 95 e320 cabriolet. The documentation on the rear regulators is a little sketchy on the convertibles (everything seems to be directed toward regulators in doors). Does anyone know if the motors are the same on all of the regulators (front vs back, left vs. right), or is that something that's going to be specific to that spot?

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'87 300D

I looked at Pelicans listing of regulators for your car, and they show only front regulators. Usually they have the rear too and show an aftermarket brand...way cheaper than the MB brand.... called something like Magneti Morelli and fortunately for you, the rear regulator usually come with the motor and the fronts do not. Where have you looked?

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'89 260e (212K Mi.), '92 400e (208K Mi.), '92 400e (not a misprint) (146K Mi.), '95 C220, '81 240D--Sold

I assume you know the motor's bad?

I say that because I thought likewise but after carefully cleaning the contacts on the plunger switches that activate when you open/close the door, all was well again.

RayH

Magneti Marelli in an Italian OE maker of electrical components that is owned by Fiat.

Generally, window motor geaboxes are handed ( one side is a mirror image of the other ) and sometimes a Left front is same as Right Rear. You usually can swap the motor portion. I've used a SAAB ( Bosch ) motor to fix a Jaguar ( also Bosch )

When mounted with gearbox up and motor low, grease slowly oozes out of the box and onto the motor brushes causing them to lose contact. A cleaning and brush replacement will get things going again. ( oil attacks the brushes and they usually can't be reused )

I assume it's the motor because I can hear the relay getting power when a button is pressed and the motor doesn't run at all (through the direct button or the key in the door method). I guess I don't really know for sure though.

I didn't even get to the point of taking the motor out yet, so I'll do that and see if I can replace those brushes to get it going again. I'll also check the door connections.

Thanks guys,

BC

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'87 300D