reverse lights not working

2002 BMW 525I
199,000 MILES • 2.5L • 6 CYL • 2WD • AUTOMATIC
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CHILLY8544
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  • 1 POST
Reverse lights not working when car is in reverse.
Mar 20, 2018 at 7:26 AM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
First check if the bulbs are burned out. If they are okay, this is likely to be a dealer-only item. BMW is extremely stingy when it comes to giving out their service information. The only thing shown on the wiring diagram is the instrument cluster feeds a lighting module, and that module sends twelve volts to the backup lights. Nothing is shown on the diagram related to a backup light switch or transmission range sensor on the transmission.

There is a range sensor on the transmission for automatics, but I suspect if that had a problem, there would be other transmission-related problems.
Mar 20, 2018 at 12:22 PM
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