Tom in Austin

IIRC correctly, the brake sensor consists of essentially one continuous wire that loops through the two wear blocks in the top center of the pad. If the 'block' wears to the point that the wire touches the brake disk, then the circuit is broken and the ECU turns on the warning light.

So, can you bypass the things by just making a short loop at the round plastic barrel connector just above the brake? That would make a continuous circuit the same as the sensor and make the ECU think an actual sensor was in place.

I have some new EBC pads going in, and don't want to bother cutting back the attached shims to make enough room for the sensor. I've read discussion here about jumpering wires at the ECU under the footrest, but that seems too complicated if you can just substitute a short loop at the connector to fool the system.

GlenL

Yes.

Rob Edwards

The brake pad sensors on my GTS were all ziptied to the flexible brake hoses, just hanging there. Not sure that's what I would have done, but it's certainly cheap and easy.

Randy V

The wear sensors for the GTS brakes are different than all other previous models.

Simply drilling the correct size hole into the edge of the pad is all that is needed to fit these sensors to aftermarket pads.

wg928

RISKY BUSINESS.... you're the man.... ooooops, scoured rotors scare me, especially as a surprise far away from my garage.
Best Regards Tom. maybe I'm missing something .

JG928S4

did at footrest, just a jumper, was very easy.

Tom in Austin

Worked fine. I cut the wires, soldered them together, and then dipped in liquid rubber stuff (the product you can use to coat tool handles, etc.) to insulate. No "Brake Pads Service" messages on the dash so far ...

Also replaced the parking brake shoes, what a rusty mess! For once, a delightfully simple and intuitive mechanism, must have been outsourced, Porsche would never think up something so easy to work on!

wg928

Please tell me how the benefit of no warning outweighs having it, thanks.

Rob Edwards

If you're racing, or if you're a maintenance junkie and your wheels are off regularly, you're visually checking your brake pad wear anyway, so the sensors are superfluous. (N.B. - I will re-connect mine once my car is back together.....)

aj986s

For street driving its not a big deal. Although the wear sensor can eventually itself break after multiple warning cycles. IIRC the warning is given by either A) sensor wire touches metal (rotor) or B) wire loop is broken. Sensors aren't too expensive, about $30 or so, but can become a wear item.

But for the track, as mentioned, constant visual inspection negates the need for the sensors. But I've seen 2 instances where track driving generated enough heat under repeated braking to cook the sensor wires (and generate considerable smoke). Tying off the sensor wires just a few inches away, to the strut or brake line, seems to be more than far enough.

wg928

GOT IT!!!!!!!!!
Thank you gentlemen.

Richard74

Koenig-Specials 928

What year is your car?
Pre-89 S4 is different from 89 and onwards I believe.
Or, underneath left foot rest vs above ABS unit.

Richard74

Oops, sorry, didn't realise I was in the 928 section. I have a Cayenne S 2006

Speedtoys

Regular inspections...that's what you're missing.

Plenty of reasons to put an eye in there once or twice every 50-60k miles.

Yes, sensors 'prevent' that, but IMHO, if you have to turn the rotor after a set of pads, I replace the rotor.

I like mass in my heat sinks.