Windows - (Rear) Droning Noise: Overview
91mercedes02
TO: OUR MERCEDES-BENZ PASSENGER CAR
DATE: March 1991
REF. NO. MBNA 77/6
SUBJECT: MODEL 129 SUBSEQUENT INSTALLATION OF SPOILER FOR SOFT TOP REAR WINDOW
Customer complaints of a droning noise in the area of the rear window, at higher speeds, could be resolved by the installation of a spoiler.
If a readjustment of the soft top does not remedy the complaint, only then should the spoiler be installed according to Work Instructions Number 252.