Front lights

1999 BMW 523
160,000 MILES • 2WD • MANUAL
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EDDIES
  • MEMBER
  • 1 POST
front headlamps go dim when driving battery and alternator tested and are ok. when i put on full beam the back to normal they look like they are not on at all for 2 mins then back to normal.there is some sort of motor on drivers side wheel arch but dont no what that is for.
Nov 18, 2010 at 4:10 AM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
The lamps are controlled by the general module, perhaps there is a fault there. The car might well need to be scanned for possible fault in that system, I recommend seeking out a shop that has the proprietary equipment to scan the car, generic scanning is not going to be conclusive.
Nov 20, 2010 at 2:52 PM
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