S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

ABS,ETS, ABR inop

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Old 07-06-2015, 06:05 PM
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S550 4MATIC W221, W222, Lotus Elise
ABS,ETS, ABR inop

Got these warnings. DAS fund out right front speed sensor related. Cleared codes and came back again with right speed sensor. The sensor passed test though.

Wis said could be pulse ring, sensor or wire. That's too many things to check. So I decided to swap speed sensors left and right. The error codes went to left side after swap.

Bought speed sensor and all good now. That thing can impact almost every thing from engine to transmission performances.

Might be a common issue, thought to share.
Old 07-06-2015, 07:05 PM
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Depends on the weather
Thank for sharing. I'm sure it will come in handy for someone at some point.
Old 07-06-2015, 09:19 PM
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Good find. Normally when I get one of those I begin by load testing he battery. 8 of 10 times it is just the battery not providing enough juice the first 15 seconds of the drive and the traction control systems failing to initialize

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