I have a 2002 c240 which is starting to make a clapping sound everytime I start it. Its seems to be originating from behind the main blower vents on the dash. I believe it may be associated with the climate control but not sure. The noise stops after about a minute, but the air flow does not seem as strong as it used to be. My care has about 1000 left on the warranty. Any ideas what this might be or how serious of a problem. Thanks in advance! moman

YES, Your dealer will know exactly waht that is -very common.

The climate control blend doors are actuated by small electric motors (stepper motors). One of the motors has broken through the cheap plastic linkage. It is a very common repair, but the upated links are a lot better and I have not seen or heard of one breaking yet.

What dealer do you go to?

RBM OF ATLANTA. I bought the car used from a dealer, who advised me to get the b service and make sure they check it out thoroughly. RBM kept it a week and the service advisor had the shop completely update and repair everything. I asked him to give me an approximation of the cost if not under warranty, and he smiled and told me between 7-8 thousand dollars. I have less than 1000 miles b4 I hit 50 k and the warranty is up. Is this repair cheap or expensive? Any other suggestions you can make b4 warranty expires. Thanks, I really appreciate the advice. Moman