Vauxhall - Vectra-B - Intermittent ABS Light | Technical matters | Back Room Forum

Fri 9 Nov 2007 21:18

Vectra-B - Intermittent ABS Light - sutters

Hi,
My ABS light always goes off after the car is started, but will during any journey come on and go off again.
It will come on for 5 mins, 10 mins..... then off again maybe for 30 mins ..... 60 mins...... and repaeat this at any random interval.
If I stop and resart the car, it will always go off again.
Does anyone have any ideas ???
Thank you for any sugestions.
Sutters.

Edited by Dynamic Dave on 09/11/2007 at 21:21

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Fri 9 Nov 2007 21:23

Vectra-B - Intermittent ABS Light - Dynamic Dave

As the light goes off when the car is started, and only comes on while moving, my initial thoughts are a faulty wheel sensor. Now which one is anyone's guess. A read out of the fault code will reveal.

I take it you've not recently had any tyres changed? Perhaps one new one on one axle and an old one still on another?

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Fri 9 Nov 2007 22:04

Vectra-B - Intermittent ABS Light - Ruperts Trooper

Faulty wheel sensor looks favourite to me, as DD says, reading the fault code(s) will identify which one.

Differences in tyre diameter, either through wear variation or size differences, shouldn't cause an ABS fault light but it may cause the ABS to operate during normal, ie non-emergency, braking - the larger diameter tyre rotates slower making the ABS ECU think the wheel is locking.

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