Help with Brake Wear Sensors Please

[MarkOfZero]

Thanks sd_b, Yes, there is no code thrown, only the dashboard light comes on.
Since both of my front sensors are not open circuits, I'll test the rear two tomorrow. I'll update this thread with what I find out.

Thanks,
Mark

[MarkOfZero]

Well, I checked the back two brake wear sensors this morning. No joy. All four seem to be fine. But, the warning light is still on. I guess that means that there is a disconnected (or broken) wire somewhere in the harness.

Have any of you had this problem? I would love to be able to narrow it down a little. Anybody have any other suggestions?

Thanks,
Mark

p.s., It is a 1997.

[Topless]

My understanding is that the light will come on if the sensor circuit is open (sensors removed) or if one is shorted to ground.

I replaced my pads last May and reused the old sensors. Two weeks later I was at the track and the brake light came on. I inspected all the pads and fluids and everything checked out A-ok but a failed master cylinder might be hard to spot. I didn't want a braking issue at 120+ so I ended my day early. When I got home I pulled the sensors out and found one had gotten really hot and was grounding out. Maybe I didn't have it inserted into the pad properly. I insulated all 4 sensors with some heat shrink tubing and zip tied them back per others instructions and the light is gone. I re-inspect my pads and sensors every time a wheel is off and all is well so far.

I hope this helps.

[MarkOfZero]

Does anybody have any dead Brake Wear Sensors they could sell me cheap? A set of four would be ideal. They need to fit an early 986 (1997). I want to make a set of test/bypass plugs out of them.

Also, does anybody know if anything other than Brake Wear Sensor(s) and/or system wiring can cause the Brake Wear idiot light to come (and stay) on?

Thanks,
Mark

[jcb986]

Pellican Parts, Suncoast Porsche, Sunset Porsche and e-bay. First try the classifieds here and do a search.