Hello! Unfortunately I had to find out that my seat heating on the driver’s side no longer works, neither seat nor backrest. I looked at the manual once, the seat heating seems to have only one safety for driver and passenger side, so I excluded the safety. Where could the error lie? Until 2 weeks ago it still ran perfectly. I have a poor measuring device available, but should be enough for approximate measurements if I have to check something. Thank you in advance Greeting Stefan