I have a 98 E300D as well. The driver's seat clicks, and shifts slightly under hard braking or fast acceleration from a stop. I have had it to the dealer several times and have been told that the problem can not be fixed under the Starmark warranty. I had the "water in the rockers" problem fixed, and that wasn't covered either, ever though there is a service bulletin regarding the problem. I'll fill out the NHSTA form. My car has MB Tex; I assume yours does too.