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Old 13th August 2017, 09:33 AM
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tc4332 tc4332 is offline
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Join Date: May 2014
Location: Wigan, Greater Manchester, UK
Posts: 2,323
Default Intermittent "Pads Worn" warning

For once I'll try to leave the humour out.
Some of you may remember that during the Lindisfarne meet I had to park up and wave you all by.
The problem was that as we took a sharp left hand corner there was a rather horrible and loud scraping sound at the front end. After you all went by I crawled under the front end, nothing to be seen. Drove forward a yard or so with the noise still there. drove backwards for a yard, no noise. Had another look underneath and again nothing to be seen. Tried driving forward and we had the normal A8 silence.
Since then we have suffered with this "Pads Worn" light coming on nearly every time Gwen drove the 8, but only occasionally when I drove her (the 8 not SWMBO). No apparent reason or pattern, sometimes just a bump in the road, sometimes when brakes applied, even when parked and ticking over. Nothing to work from.
Because the noise had seemed to be front right I took the front right wheel off and put my calibrated eyeball on the job. I found that the pads sensor wire was under a lot of tension from the socket at the top of it's mounting bracket to the caliper. By slackening the 13 mm holding bolt I was able to move the bracket forward a degree or so; releasing the tension on the wire. I checked the nearside and the cable there was to my mind tight but not under any undue tension, so I adjusted that one as well but not by as much.
In retrospet I think that we must have picked up a stone or something that had lodged against the bracket and twisted it slightly.
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