Quote:
Originally Posted by J liddy
Hi all i have noticed a clicking noise when i turn ignition on but engine not running it lasts a few seconds then goes off its only done this on the odd occasion is it anything to worry about ? Coud it be ABS UNIT ?
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Could well be the ABS modulator unit cycling through its self-check Jim. If you start the car and drive off straightaway and touch the brakes lightly, you should feel a definite pulse after somewhere between 8-30 seconds - that's the end of the self-test.
Normally you won't hear or feel anything, just sometimes because of how you've parked or last used the brakes or whatever you'll hear it.
Keep your eye on things in case it's not the ABS unit self checking - it could also be the glow plug relay clicking on and off as you haven't started it.