ABS module rebuilt, DSC light still on - BMW M5 Forum and M6 Forums
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post #1 of 3 Old 13th March 2018, 10:45 PM Thread Starter
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ABS module rebuilt, DSC light still on

2002 e39 M5.
The DSC light went on a little while back. Shop confirmed it was the ABS module, by swapping with a known good one.
Sent my module for repair to BBA Reman, reinstalled it, DSC light still on.

Should the light have gone off as soon as I put in the rebuilt module? Or is there anything else I need to do first, e.g. reset stuff?
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post #2 of 3 Old 15th March 2018, 06:00 AM
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Were you only having the DSC light? Normally a faulty ABS module would give the trifecta (ABS, brake, DSC).
If it only your DSC then you should have your codes read again. Likely a steering angle sensor or yaw sensor fault.

This is also assuming you have validated the alternator output (should be 13.5-13.8 at idle and 14.2 at 2k), fuses, and grounds. For a simple way to check alternator output, use the “hidden menu” test 9.

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post #3 of 3 Old 19th April 2018, 05:53 PM
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Once the rebuilt module is installed yes the lights go off right away. So it might be a steering angle sensor or speed sensor, do you have a scan tool to check the code?

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