My brake pad wear warning light on the dashboard is constantly on and has been like this since we had the brake pads renewed some months back, the pads were not genuine BMW items. Our local garage has checked for faulty sensors but cannot even find any wiring for sensors or pads.
There should be sensors, not able to find them means they are not there, hence the light is on. You can buy the sensors from your dealer. +/- $8. When they have been lid, you have to replace them. I think the mechanic who changed the pads, removed the sensorcable.
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try these websites www.autozone.com and www.alldatadiy.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your SUV wish you the best of luck Michigan Man.
As the brake pads wear, the brake pad wear sensor contained in the brake pad contacts the brake rotor. This causes the sensor to fail. When a pad wear sensor fails it opens the ground circuit of the pad wear warning light system causing the pad wear warning light to illuminate. Perform normal brake service to correct this condition and be sure to replace the brake pads with pads containing wear sensors. Once the brake pads and wear sensors are replaced, reset the brake pad warning system by turning the ignition switch to the "on" position. As long as continuity to ground exists through all the brake pad wear sensors the system should reset and the pad warning light in the dash will go out. If the pad warning light does not go out, a check of the pad warning circuit for an open circuit condition or poor ground must be performed.