[KG1639]

Hey all,

A ltitle background, I drive a E92 February-build 2007 328xi. My BRAKE light in the dash came on, as well as the "Car on Lift" symbol appears on startup, so I looked at my front pads and they def needed to be changed.

So I bought Akebono EUR 1061 front pads as well as a PEX brake pad wear sensor.

Pads - http://www.ecstuning.com/BMW-E92-328..._All/ES257234/
Wear Sensor - http://www.autozone.com/autozone/par...questid=278607

I installed both front pads (using tutorials on this board), clipped the new sensor in the driver's front pad, and everything works great after bedding.

Now here's my problem.

I tried to reset the service indicator with the car both on and off, and the front pad symbol won't reset. I get to the Front Pads reset menu and the clocks spins like it's working, then it just shows the front pad symbol with -9000 miles still. If I press the brake pedal as I'm trying to reset the front pad symbol, as soon as the little clock shows up it automatically jumps to the "car on a lift" symbol, also not resetting it.

Is the sensor not working, or is this a problem that has been answered before and I just couldn't find via searching? I appreciate any help.

KG

[Red_Bean_Bun]

The brake sensor seems shorted. It works by having a closed circuit with the rotors.

[KG1639]

Originally Posted by Red_Bean_Bun

The brake sensor seems shorted. It works by having a closed circuit with the rotors.

I mean, I routed it and connected it the exact way the original one was in.

[KG1639]

Is there a way to test the sensor?

[idrift4wd]

im guessing you followed the correct procedure when resetting??

car should not be on, access maintenance menu(odo button 5 seconds), press and hold BC button on brakes until reset?

[KG1639]

Yup. Tried it with the car both on and off. Without the brake pedal pressed, the clock spins and it finishes, but doesn't reset anything. Still shows -9000 and the "Car on Lift". With the brake pedal pressed in when resetting, once I click the BS stalk to reset, the clock appears real fast then it beeps and "Car on Lift" image appears and no reset is done. Weird.

[Richurd]

I believe the whole system needs to be reseted as in front and rears. If this still does not work,you can splice the sensor and connect the two wires together and the reset. This solves the issue if you don't want to buy new sensors.

[crypticc]

Rear first

[KG1639]

Sorry about the late response, but after a few days driving, the Brake light went out, and it shows 1300 miles now, which obviously seems low.

[Sparkee]

Originally Posted by Red_Bean_Bun

The brake sensor seems shorted. It works by having a closed circuit with the rotors.

Actually it works as a closed circuit by itself. There are two wires to it. The link that closes the circuit between the two wires stands up about 3mm off the backing plate of the pads. When contact with the rotor causes wear through that link, it opens the circuit which makes the light come on. And that is why you have to replace them ONLY if the light came on. But, they tend to break when you take them off the old pads, so it is better just to buy new ones just in case.

BTW - my sensors are cable tied to the suspension, as in I don't use them because I keep an eye on pad wear myself.