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Thread: Z4 Roadster (E85) warning lights
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Old 12-16-2012, 09:41 AM
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jsc jsc is offline
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Mein Auto: E85 M-Roadster, E82 135i
Originally Posted by zsazsa View Post
Honestly, I would like to understand.... It does not make any sense.... I or the mechanic checked everything, but some failures are just does not want to go away. As you are saying, one day the problem will be solved, until than we live with it. I have older cars w/o computer and all this new electronic garbage, where you never know, that it is a real problem or the feed back system is wrong, so it is an immaginary problem. The Z4 looks great, drives great, but all this electronic garbage does not make me happy... And I am an electronic engineer.... Thanks for your input, please let me know if you found the solution.... Zsazsa
If all your sensor inputs, associated wiring and battery voltage are good, unfortunately there are several more expensive / difficult areas that may be causing the problem. The ABS relay, DSC hydro unit and associated electronics, bus controller, etc, are all in path for a possible failure of this type. At this point it would probably be worth taking the car to a BMW specialist with a GT1 or equivalent system to be able to read chassis specific BMW codes and diagnose the problem at a more detailed level.
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