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Discussion Starter · #1 ·
I took my car in for service today, because I keep getting a trans fail code on my obc, they told me they did all the test with rpm's and were on the phone with bmw usa, and they told them that if I have an aftermarket sound system that it is sending the wrong signals to my I-bus and if I don't give them a reciept showing them that I had my stereo unhooked (sub and amp) that I would void my transmission warranty. does this sound right?
 

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I've got what plants crave.
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no. but they are validated if it's just a warning light coming on. if you actually have tranny issues, then the have no standing, but if it's electrical and you have stereo work, you're kind of S.O.L.
 
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