2003 BMW 540I ELECTRICAL

  • Tiny
  • jnoyola3
  • 2003 BMW 540i

Electrical problem
2003 BMW 540i V8 Two Wheel Drive Automatic 68000 miles

The engine fail safe mode keeps coming on. A diagnosis was done and it was believed to have been a bad alternator. A new battery and alternator were put on the vehicle. The battery light and engine fail safe mode keeps coming on. Car shuts off.

Wednesday, November 25th, 2009 AT 9:09 PM

1 Answer

  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,705 posts

It might be something else besides the alternator. The scan might have been inconclusive, what method was used to extract the fault?

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Thursday, November 26th, 2009 AT 8:35 AM

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