2000 Mercedes Benz ML320 BRAKE LIGHTS / CRUISE CONTROL

RPSTARR

MEMBER
2000 MERCEDES BENZ ML320
6 CYL
AWD
AUTOMATIC
101,000 MILES

WHEN THE IGNITION IS IN THE ON POSITION THE BRAKE LIGHTS ARE ON ALL THE TIME AND THE CRUISE CONTROL WILL NOT ENGAGE. BOTH PROBLEMS STARTED AT ABOUT THE SAME TIME. WHEN THE IGNITION IS OFF THE BRAKE LIGHTS DON'T COME ON WHEN THE PEDAL IS DEPRESSED. WOULD A DEFECTIVE BRAKE LIGHT SWITCH CAUSE THESE PROBLEMS?

updated 5-21-09
CHECKED ESP RELAY AND IT WAS WORKING - WENT TO BRAKE LIGHT SWITCH AND SNAPPED IT A FEW TIMES AND IT STARTED WORKING PROPERLY - HAVE ORDERED A NEW BRAKE SWITCH - THANKS - RAY

1 Reply

DOCFIXIT

MECHANIC
18,828 POSTS

Hi
Your good that is right. Get to brake switch see if blue wire is hot? If so switch faulty. Too make sure it is not the ESP relay. Unplug brake switch light off.
Let me know
Thanks for donate

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Wednesday, May 20th, 2009 AT 2:56 PM