Hardly anyone is spared from this: the protective bar at the doors “deforms or lifts” over time.This happens as a result of rust formation in the inner of the protective bar.The replacement is also possible for the layman and does not cost the world: 3D0854631A bar,driver’s side front 3D0854632A bar,passenger’s side front,€ approx.46 per pc; further 2X: N 90960201 inner hexagonal pass screw,€ 1. The two screws are turned on or off when the door is open from the inside,below right and left,by pre-cut opening of the rubber bar. Attention: These two screws break off immediately with the affected vehicles.