Hello…who can give me a tip? Seat heating and ventilation from my G 63 Bj 2017 I can only switch on from time to time.The problem is only on the driver’s side….Passenger side can be switched on at any time…..Seat heating can often be switched on before starting…but also there is not always…functions now and then……….Who can give me a tip??? is the seat heating and ventilation on the driver’s side supplied with a separate relay????or possibly plug-in connection on the Sit z???? Cable breakage???or the switches both a wobble contact??? or or…..who knows the problem and who can possibly help me???