The ASR and ABS lights on a C200 estate stay on after ignition. Cruise
control no longer works. I am told this is likely to be one of the ABS
detectors/Speed detectors on one of the four wheels. I would be
grateful for anyone's thoughts on this diagnosis.
If it is the case how can I ascertain which wheel's detector has failed?
Finally are the detectors difficult to fit?
first off check your charging circuit mate I had very similar symptoms,
turned out to be bad battery, and alternator losing it - causes the system
to turn off abs etc when the Voltage drops too low, even if it starts first
time etc.. If it is the sensors they are just one bolt, but you need to
check their resistance before replacing any, they aren't cheap - cleaning
them out (and the toothed ring on the wheel ) may help
If the light[s] do not go out after starting, you have a power supply problem.
If the light[s] go out after starting but come on after the car moves, you have
a wheel speed sensor
The system does not know a sensor is bad when you first start the car. The car
has to move and the
sensors have to send back a A/C ~ voltage signal. No voltage = light comes on.
In your case, do NOT throw money away on sensors.
You have a voltage supply problem.
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