2004 BMW M3 Questions

All 2004 BMW M3 Questions

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Can a faulty tensioner cause the alternator to fail.
It started yesterday, when all of the sudden my SMG when off gear, the gear number started to blink and the transmission yellow light turned on. After this i turn the engine off and back on and wouldnt go into gear, t...
First time my BMW is off the service plan from when I bought it. Now I need to get the oil changed and am wondering what requirements I should have for the service station that does the work. How do I ensure they us...