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Old 07-01-2003, 12:05 PM
Posts: n/a
Question C230 Coupe ('03) Buzzing From Sun Roof


I took the car in to Calabasas (Calif) Motorcars and they had it for four days. Of course, they came back with 'No Problem Found.' They really wanted to help me, and when I shared your comments with them they checked the components of the sun roof. They said I had the 'latest and greatest' even though the car is early production '03 (June of 2002). (??) T hey also said they ordered a CD from MBZ to be able to check all the components and everything looked normal. I also went on a drive with the Shop Foreman and of course, no buzz! But when I drove the car the same evening, I had no trouble whatsoever getting the VERY LOUD buzz to occur at about 45 mph, sun roof all the way open. I'm beginning to think that when the car has been sitting in the sun, things expand and the buzz doesn't occur. I thoroughly cleaned out the channel under the air deflector and tightened the two pair of screws. I see a small, horizontal rubber block close to the center of the channel. Is this what you were referring to? If not, PLEASE provide me with more specific information so that I can relay it to my service advisor. And, any data from MBZ you have. The buzz is extremely loud and very annoying. Thanks much, Jim
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