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  1. S550 Electrical Issue

    Voltage stays consistent 14.2 14.1 Lights on ac on same 14.1 I’m thinking maybe BCM back feeding ECM causing timing to go nuts I have data log the issue tuner thinks it’s electrical causing timing issue
  2. S550 Electrical Issue

    When both are up and you close either door it stumbles alt- OEM new 14.2 constant Battery OEM New Not that I see I went over it pretty good grounds I checked all of them cleaned paint and retighten I am at a lost withnit
  3. S550 Electrical Issue

    Brand new brother
  4. S550 Electrical Issue

    Yes sir I have a fuel gauge on rail it never changes until it kills Bought the car Oct of 24 already had SC and mods except injectors and FP so it’s been like this since I purchased it so I think it’s electrical something between shutting door circuit and timing changing I thought maybe someone...
  5. S550 Electrical Issue

    So brand new DW 400 FP Window motors, Alt, Crank Sensor, Bosch ID 1050 Injector, plugs etc
  6. S550 Electrical Issue

    Any help or advice would be appreciated Car stumbles and sometimes dies at idle after warmup runs good driving if u kill it and get back in and start it up u have to turn it over for a few seconds and touch gas to make it start smells rich, also when you close door and window seals car wants to...





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