Hello, have a SL320 (0708/475) which at the moment has difficulties with the ZV. The car has the system with the IR eyes in the door locks and the tailgate. The following problem occurs more frequently: – Car cannot be opened from one side (left or right door), sometimes not at all – Close over the rear flap cylinder always goes, LED lights behave differently then than usual, continuous lights red or green – if you open/close over the lock then it goes a few once again with the IR key on all doors The topic started with the rear IR eye, which had the topic that it sometimes lighted slightly red/green, no matter whether it was opened or closed. Was not always. I changed once all transmission/reception suctions against each other, but can not say whether one eye or several are defective. Is there a way to test the system? Error memory readout or something? As ZV control unit the 1298200626 can be used simply tausc What about the old stored keys? I can only guess at the moment, but I think it looks like the ECU?!? Maybe one of you can help and know a solution. A radio replacement tv is out of the question….. Best greeting Klaus