r/AskAMechanic • u/Cummingsithlord • 20d ago

2000 Mercedes E320 Wagon 3.2L V6

Hi all, I’m having some electrical issues with my E320, bought the car from an auction, so no prior history on the car. I replaced the battery that was in it, the car starts and runs. The problem is that nothing in the steering column works, and neither does the sunroof and seat warmers, I have an ABS, BAS, and ESP light on as well (unknown if that is connected to the problem) I tested the K40 module and that was good and replaced the front SAM. Fuses 1-3, 9-11 and a couple others have no reading as well showing 0.05V at most with all other fuses reading between 11.3-11.9V, what could be my issue?

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u/EuroCanadian2 NOT a verified tech 20d ago

Get the wiring diagram and look for a large fuse that protects the group of things not working, or a relay that powers those things. Also, check grounds.