With my G270CDI, W463.322, I have the following problems: In the case of an unoccupied passenger seat, the SRS fault lights up when a passenger sits on the seat before the ignition is switched on. According to Mercedes, the seat occupancy detection is defective, but the sensor mat in the passenger seat is no longer available. What is the remedy here? Furthermore, the interval wiper does not work, in switch setting interval the wiper constantly runs at the slow speed. e Causes could be responsible for this? Thank you for your help! Greetings from Austria Georg Buchner