C220CDi - weird electrical things

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DariusB

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Hi all and Merry Christmas etc
1999 C220CDi
I have an intermittent (groan) fault which is so strange and specific that I'm hoping there's an obvious answer. After driving in wet conditions (so a lot at the moment) all the following happen at once: The ABS and BAS/ASR light comes on; the cruise control doesn't work; the motion-triggered automatic central locking doesn't work (though the locking system is otherwise unaffected, and, bizarrely, it still works when the car reverses). When the ABS lights go out, all the other faults disappear as well. The only thing I could think of is that all these things are related to the car sensing wheel movement - am I on the right track?

Many thanks
Darius (West Yorks)
 

piestore

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speed signal

Hi

Yes all the faults are related you are quite correct it is a speed signal fault read out esp fault memory and that should give you a clue
 
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DariusB

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Speed sensor

Many thanks - will get it checked out
 
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