Hello everyone!
I have problem with unstable voltage. I have new IBS, alternator and battery. everything seems to be in good condition but i have voltage drop on DME but voltmeter and other units show the same voltage. There is no battery drain overnight. I can let the car stay for one week and battery is still OK. I read the CAS module today and I found that the low voltage is present on KL 15 relay probably and DME stored the error 150 km ago which is actually not present. Picture description is following: 1. During driving. 2. Engine off. 3. Engine off with high load (fan, seat heating etc. ON). 4. stored error in DME which is not present now. Thanks for any help
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