GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

GL 550 2011 with electrical problem

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Old May 30, 2021 | 05:07 PM
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GL 550 2011 with electrical problem

I have a 2011 GL 550 with about 200K miles. It has been very reliable... until now.
Brake wear message goes on, usually when I first start the car. I had the brakes checked for wear and was told they looked good. I reset the light by pushing a button on the steering wheel.
Recently when I make a slow sharp turn, usually to the right, I get a proximity beep and at the same time the brake check light goes back on.
Has anyone else had these electrical gremlins?
Thanks in advance,
Dave
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Old May 30, 2021 | 05:41 PM
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Probably just a bad brake wear sensor. They are cheap and easy to replace.
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Old May 30, 2021 | 07:21 PM
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Yes, Has been replaced on both front brakes.
Thanks for the thought.
Dave
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Old May 30, 2021 | 09:26 PM
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The harness to one of your front brake wear sensors has an intermittent short. Replace.
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Old May 30, 2021 | 09:38 PM
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Originally Posted by Max Blast
The harness to one of your front brake wear sensors has an intermittent short. Replace.
He's correct. You'll need to replace that harness. It looks just like the wheel speed sensor harness on the right front.
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Old May 31, 2021 | 12:05 AM
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Got it. Will give it a try.
I'll keep you posted with the results.

Many Thanks,
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Old Jun 8, 2021 | 10:47 PM
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2008 S550 4Matic, 2007 GL450, 2008 C300, 2018 GLE63 AMG
oh bridge the wire to ground or code out the sensors
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