the brake pad sensors after changing brake pads/rotors? With the help of a friend up the street, I changed all four pads and rotors this past weekend. We didn't change the sensors. I still get the warning light message. Can I try to clean the contact area and get away with not replacing them or is it standard practice to change the sensors? Thanks!

If the pad warning light is on, you need to change the sensors. If you had done it before the light went off, you could have kept the old ones in there. Not expensive, but I guess it will be a PITA if you've already done all the other stuff and put it all back together.

If the sensors never touched the rotor or if the covering is not scraped, you should be fine. Some people reuse the sensors. Recheck your connectors or look for a broken wire.

If the sensor is worn at all I'd change it just to be on the safe side. If you need some let me know, I might have the ones you need.

i just changed all my fluid to ATE Super Blue, and SS Brake lines... getting ready to do all new UUC slotted rotors, and new pads.. rennwork, you have sensors for E36 M3, 1999... if so, how much??

Sorry, think I only have E34 sensors. :(

thanks though...

Hi, I got my brake pads and rotors changed on a 328ci but the brake warning light is still on. The mechanic (not from a BMW dealership) told me the light would go off about 100 miles after I break-in the new pads/rotors. I did not change the sensors though. Could this have anything to do with the light still on and how important is it to change the sensors at 90K? (The shop didn't have sensor parts).

Thanks.

Perfect thread to find. I need to change my pads/rotors this weekend and the guy mentioned sensors too, but I didnt know whether I should change them too or not. My light isn't on yet, so I guess if it doesnt come on by this weekend Ill try to not change them. They are fairly cheap though, so maybe Ill just do it anyway since I'll be in there. :dunno

Okay, not to bang on the mechanic but I'd seriously consider changing to another mechanic. WTF??? "The light will go out in about a 100 miles???!!!" Will the car just "decide" it's time to put the light out??? Give me a break!!!:mad The sensor wears down and break an electrical circuit so the light comes on, simple as that! You need to replace the sensor.

If the light was on before you replaced the pads you need to change the sensor.

if you had no light, and simply decided to put new pads on, your old sensor will do fine.

If the light was on before you replaced the pads you need to change the sensor.

if you had no light, and simply decided to put new pads on, your old sensor will do fine.


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