ABS codes?

BHAMDOC1973

MEMBER
2011 BMW 335
6 CYL
TURBO
2WD
AUTOMATIC
117,000 MILES

Traction, ABS, and brake lights on, no limp mode. Codes are for all wheel sensors except left. Via scanner shows all 0 except for the front left which works fine. Took rear wheel off cleaned sensor, put a washer, nothing. Ring looks clean and no glossy marks. Is this most likely an ABS module?

7 Replies

JACOBANDNICKOLAS

MECHANIC
108,269 POSTS

Hi,

It's odd if they all failed at the same time. Also, replacing the ABS module can be an expensive mistake. By chance, have you scanned for codes? Could you let me know what they are?

Also, have you checked to see if the sensors are producing voltage?

Take a look at this link:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Let me know.

Joe

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Friday, November 4th, 2022 AT 8:32 PM

BHAMDOC1973

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1,293 POSTS

Waiting for an ABS tester. Question: if the speed part of the cluster is bad will it cause ABS lights to go off like that? I doubt. Also, I hear there is a speedometer sensor on the rear differential, can you confirm if these cars do?

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Monday, November 7th, 2022 AT 3:45 PM

JACOBANDNICKOLAS

MECHANIC
108,269 POSTS

Hi,

If the is a sensor on the differential, I'm not familiar with it. As far as your question regarding the cluster is concerned, anything is possible, but I wouldn't think that would cause the light to turn on.

Let me know if you have other questions.

Take care.

Joe

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Monday, November 7th, 2022 AT 7:03 PM

BHAMDOC1973

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1,293 POSTS

I don't know how to explain it, but only after replacing all four sensors with genuine BMW sensors that all is good. I don't understand how all four can go bad.

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Thursday, November 17th, 2022 AT 1:58 PM

JACOBANDNICKOLAS

MECHANIC
108,269 POSTS

Hi,

Thanks for the update. I totally agree with you. I don't see how they all failed at the same time either. Anything is possible, but it is very unlikely.

There is a chance you moved around the correct wiring to complete a connection and have the system working again. However, again, that shouldn't have caused failure on all four.

Regardless, I'm glad to know it's working for you, and appreciate you letting me know the outcome. Feel free to come back anytime in the future. You are always welcome.

Take care,

Joe