1999 Mercedes Benz ML430 brake lights

1999 MERCEDES BENZ ML430
120,000 MILES • V8 • AWD • AUTOMATIC
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PETE KLUMB
  • MEMBER
  • 2 POSTS
2 out the the three brake lights do no work, only the 3rd (center) light works. I have checked the bulbs and fuses and found no problem????
Can you help? Is it a wiring problem or what?
Thanks,
Pete Klumb
Jul 17, 2009 at 10:34 AM
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BLUELIGHTNIN6
  • ✓Experienced Mechanic
  • 16,542 POSTS
suspect faulty brake light switch, located on brake pedal arm below driver side dash
Jul 17, 2009 at 10:36 AM
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PETE KLUMB
  • MEMBER
  • 2 POSTS
If the brake light switch is faulty (your answer) why does the center brake light work fine?
Jul 17, 2009 at 11:45 AM
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BLUELIGHTNIN6
  • ✓Experienced Mechanic
  • 16,542 POSTS
because the high mount stop lamp runs on a separate circuit. it is ran through a relay, the main brake lamps run through the switch.....
Jul 17, 2009 at 2:27 PM
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