Hello! I have been the proud owner of a C250TD, EZ 10/95 for two weeks, i.e. the 96 model with now 86 tkm. Each time I activate the rear window heating, the yellow LED lights up for about three seconds and then starts to flash, which according to the manual means: too many consumers switched on etc., rear window heating deactivated. But: The battery is fine, had a new one for the test. The generator also seems to be OK, because despite fog lights I have now suspected the combi relay for Blinker/Wischer/HSH and have already disassembled it. Result: The relay pulls on (visible) for about three seconds and then switches off again. Among other things, a small microcontroller sits on the circuit board, which takes over the control. At the DC dealer I was already, who wants 97 euros for a relay and does not want to take it back under any circumstances, if the F As long as I’m not sure that the relay is defective, I don’t spend 97 euros. Did any of you ever have similar problems or maybe know if the corresponding monitoring circuit is really in the relay or maybe directly in the console for climate etc.? Ciao, Tom