What is the reason for the failure of BMW rear brake pad reset?
2 Answers
It may be caused by the failure of the brake friction pad wear sensor. The following are specific explanations about brake pads: 1. Material composition: Brake pads are generally composed of steel plates, bonded insulation layers, and friction blocks. The steel plates are painted to prevent rust, and the painting process uses the SMT-4 furnace temperature tracker to detect the temperature distribution during the painting process to ensure quality. The insulation layer is made of non-heat-conducting materials to insulate heat. 2. Function: Brake pads are also called brake linings. In the car's braking system, brake pads are the most critical safety components. The quality of all braking effects is determined by the brake pads, so good brake pads are the protectors of people and cars. Here is additional information: Braking principle: It mainly comes from friction. By using the friction between the brake pads and the brake disc (drum) and the friction between the tires and the ground, the kinetic energy of the vehicle is converted into heat energy after friction, bringing the car to a stop.
Encountering BMW rear brake pad reset failure is quite common in my experience. Misaligned sensors trigger errors, or slight brake system stickiness may prevent the reset signal from reaching the ECU. The electronic parking brake module might not have fully initialized - try multiple attempts or use a diagnostic scanner to check for software bugs. Also, if the reset wasn't performed after the last pad replacement, the control unit may automatically engage protective lockout upon startup, requiring strict manual procedure adherence. Physically, inspect whether the rear caliper return springs are aged/stuck or if air bubbles in the lines affect hydraulics. Never force operations to avoid damaging the ABS pump - have a professional shop perform OEM equipment calibration for one-time resolution.
