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Old 06-22-2016, 03:51 AM   #1
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Brake Wear Lamp

Brake wear lamp came on, so I did new rotors/pads/sensors on the fronts. One sensor was just peeking through the friction material.

Of course, the lamp was still on.

Did the rears last night, one sensor completely exposed. Took it for a test drive, all is well.

Drove 20 miles to work this morning, and as I'm pulling into the parking lot the lamp comes back on. A quick peek at the rears and everything seems to be in place, no sensors came out or anything.....

Any ideas?

TIA



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Last edited by peterbrown77; 06-22-2016 at 03:58 AM.
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Old 06-22-2016, 03:56 AM   #2
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I replaced all 4 when I did all new pads. I would think unless it's cut through ( where's KRAMwhen we need him! ) it should still have continuity and be ok to plug into a new pad. If pads go on prior to rotor contact they stay good. Sounds like another pad is right there. Front pads grind down way faster.
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Old 06-22-2016, 04:03 AM   #3
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Double check the cable connection for the wear sensor?
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Old 06-22-2016, 04:20 AM   #4
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Quote:
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Double check the cable connection for the wear sensor?
^ really make sure its clicked in. I've had one connector pop out on an audi after doing brakes.
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Old 06-22-2016, 04:33 AM   #5
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^ really make sure its clicked in. I've had one connector pop out on an audi after doing brakes.
But if breaking the continuity triggers the lamp, wouldn't an unplugged connector make the indicator lamp turn off?
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Old 06-22-2016, 04:36 AM   #6
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^Nope. Same thing as breaking the continuity.
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Old 06-22-2016, 04:55 AM   #7
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If you monitor pad wear/thickness w/ frequency (as should be done)... you can eliminate need for sensors all together. Simply cut each lead up near plug and short them out (just twisting bare wires together, either solder or use a crimp terminal and then heat shrink tube to seal from elements). Thus you remove all worries of idiot wear light from sensors and not need bother with replacements. Savings realized should promptly be applied to garage beer fund (preferably mine)





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Old 06-22-2016, 06:04 AM   #8
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The sensors become brittle with age and heat. They can appear to be in good order and be fully seated in the plug housing and throw a code. It's always good to have a brand new one in a drawer so you can swap one out at a time and see if it's the culprit.

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