One or more door windows may stop working due to a failed window regulator. Replacement of the failed regulator will be necessary to correct this concern.
Mercedes-Benz 350SDL Problem Reports
RepairPal Verified Mercedes-Benz 350SDL Problem Reports
A vibration felt through the center floor of the vehicle can be caused by cracked and/or shredded driveshaft flex discs, resulting in excessive driveshaft movement. If not repaired, damage to the driveshaft center support bearing, transmission, or differential can occur.
On high mileage vehicles, rear spring wear may cause the rear end to sag.