Hello. I have a problem with my SLK 230 which I have been driving without problems for a good two years. Yesterday I drove 2 hours of motorway with it. Yesterday evening I wanted to leave but it did not work. No power supply. No lamp went on, nothing. Now I just tried to get the car to run with a starting aid device. Central locking, ventilation, lamps etc. worked. When I turn the zund key, the warning light goes on and it beeps briefly. Try ic h to start now, then something turns in the front of the engine and there is also a clapping. However, no normal starter noise. Can someone help me with the symptoms before I have to call the ADAC? – because I am not a member. I soldered the K40 module about 1 1/2 years ago in two places, because the compressor did not go along with it. Until now everything always worked reliably and well. Greeting from Hamburg.