The headrests in my newly-acquired 300E are not working. That is, the motor does not raise the head rest. I have heard that the gears get damaged on the mechanism, and have seen several cars of this model and earlier that had similar-lookimng problems. What is the usual failure mode, and what does repair cost. Anyone know how difficult it is to do the repair?
Thanks!

__________________
DavidB29
1992 300E with ASR
35 years of Diesels until now!