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When I put the car away in the garage last week, all was ok - everything perfect .

Yesterday I took the car out for the first time in a week, and after starting noticed that the antilock brake light was still on . I assumed it might be a sensor problem and that it would 'reset' after a few miles . After driving the car for approx 120 miles (mostly over the magnificient mountain roads through the Brecon Beacons ) , the light was still on ...

Am I right in thinking it is a sensor ?

If so , how do I check which one ; or is it a trip to the dealer?

Has this happened to anybody else?

Would be grateful for any comments

Cheers

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It's almost certainly a bad sensor.

Unfortunately, unless you have the proper 'Tech 2' scanner you won't be able to read the fault code to determine which one. All the 'generic' OBD-II scanners only read the engine.

So you'll have to take it to a dealer who can read it. They almost certainly won't have the part in stock so that'll be a wait. Alternatively (as I did) unhook each senor and measure the the resistance across it - should be something like 1.5k if I recall. On mine the front right read nothing, replaced it (very easy) and everything was dandy!

May: DON'T hit it with a hammer!

Clarkson: Why?

May: Cause it's the tool of a pikey.

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Hi there,

Did the light come on after engine was started or when you started to drive for a few metres? If it's the first one then it could be anything from pressure switch to ABS unit itself. If the light goes out and the engine starts but comes on when you start to drive then it's a wheel sensor.

It's easy to check, use a multimeter and set to ohms. Then use the most sesative setting and test each sensor by taking the wheel off and unplugging the wire. The one that doesn't give a reading is the one that doesn't work. You could try the other way by using volts and spinning the wheel. It should give out about 2 volts but sometimes it's difficult to do this if your brakes are binding slightly.

Sensors are about

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Hi there,

Did the light come on after engine was started or when you started to drive for a few metres? If it's the first one then it could be anything from pressure switch to ABS unit itself. If the light goes out and the engine starts but comes on when you start to drive then it's a wheel sensor.

It's easy to check, use a multimeter and set to ohms. Then use the most sesative setting and test each sensor by taking the wheel off and unplugging the wire. The one that doesn't give a reading is the one that doesn't work. You could try the other way by using volts and spinning the wheel. It should give out about 2 volts but sometimes it's difficult to do this if your brakes are binding slightly.

Sensors are about

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