Hello roas!

Yes they can be rebuilt, IMHO. The first tech to work on it , Peter Vanderveer of Vanderveer Motors of Norwood MA cleaned the crud off of it but could not dismantle the potentiometer that is mounted on the body of the "slide". I should have told him to just go ahead and replace the unit himself as I don't think he would have had the brass ones to charge me $963.00 for a part that lists out at $687.00 at Clair International, another MB Authorized Mercedes Stealership.

Hey Mark!

If you also had the Austin MB Dealer replace the unit, how many hours labor did they charge you?

Tom