An ex-collegue of min is the the manager at a BMW workshop (and works for BMW for 28 years) and he always services my car. He told me that he always changes the sensors, but don't execatly now why. He also told me when you reset the service for the brakes, and it goes wrong, he has to hook the car up to the computer to reset it.

 

If the brake pad wear light comes on, you should definitely replace the sensor(s). If the wires connected to the sensor look a bit dodgy when you pull the pads, it's probably a good idea to replace the sensor. Otherwise, I don't think you need to, unless you break the sensor while removing it from the old pad.

I ran my 1999 528i on the same set of sensors for the seven years 95,000+ miles I had it (through a few sets of pads). I put aftermarket pads on my 2006 530xi a few weeks ago - used the original sensors.

 

Hi

Dan8400 - i have exactly the same -9000 mile crap coming up on my idrive having just changed the pads and gone through the 'odometer button' reset procedure. My wear sensor did however have light marks on it as it had contacted the disk - but didnt look trashed.

Guess I might have to try a new sensor.

Have you managed to get the -9000 cleared?

thanks

 

Just found pic of sensor on below site, and the sensor doesnt have the 'bump' - see

http://www.zeckhausen.com/BMW/E60.htm

bummer - need a sensor I think. Cant see a 'wire' - looks like a flat copper area but hard to see under all the crap.

 

if it jumps to -9000 than you need computer to reset it, that what i did

 

Because he's not paying for them...if they are not "tripped" (the brake change indicator never came on) then there is no need to replace them...assuming the wiring is not brittle, and all else looks ok, etc.

 

So is it the worn sensor that caused the negative reading?

 

So, I guess we should take our cars to the dearler to reset the -9000 brake counter?

 

Hi Folks,
Dont take car to dealers. Buy a new sensor for a few bucks and it will reset via dash. This happened to mine and read -9000, bought replacement sensor and reset via dash no problem.

 

I reset mine a few times but kepts going to 9000 even with a new sensor. I drove it for a few hours and it went to 30k or whatever.