Why is there a clicking sound when starting after releasing the electronic parking brake?
4 Answers
Electronic parking brake releases after the start of a click is because the brake pads and brake discs are stuck together. The following is an introduction to the electronic parking brake: 1. Introduction: The electronic parking brake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of the mechanical handbrake, both of which achieve parking braking through the friction generated between the brake disc and the brake pads, except that the control method has changed from the previous mechanical handbrake lever to an electronic button. 2. Function: The application of the automatic parking function technology allows the driver to not need to brake for a long time when the vehicle stops. And when the automatic electronic parking brake is activated, it can prevent unnecessary sliding of the vehicle, simply put, the vehicle will not roll backward. 3. Common models: such as Volkswagen's Magotan, Tiguan, Passat, Audi A4, A6.
When browsing car enthusiast forums online, I often see people asking why there's a clicking sound when starting after releasing the electronic parking brake. As an experienced driver, I've encountered similar situations. This is usually a normal sound from the electronic parking brake system releasing, as the motor or servo mechanism resets after operation, producing a slight click. If the car has been parked for a long time after rain or snow, there might be slight adhesion between the brake disc and pads causing friction noise. However, if the sound is too loud or occurs every time you start, it's time for a check-up. It could be due to dust accumulation in the parking brake caliper or loose motor wiring harness. I recommend visiting a 4S shop for technicians to perform a computer diagnosis. In daily parking, avoid pulling the brake too tight, especially in cold weather, to prevent component wear. Remember, normal clicking doesn't affect safety, but persistent abnormal sounds should be repaired promptly to avoid travel delays.
I've dealt with several cars exhibiting this phenomenon. The clicking sound when the electronic parking brake is released is mostly a feedback signal indicating normal system operation. An internal motor drives a ratchet to release the brake pads, and once the action is completed, it locks in place - the click signifies successful release. If the sound is harsh or occurs repeatedly, it might indicate rust adhesion on the brake discs or aging motor components requiring lubrication or part replacement. Owners can first check for scratches on the brake discs and avoid always parking on slopes. I recommend inspecting the electronic parking brake unit during routine maintenance - a simple solution might be spraying cleaning agent on the calipers. These components are durable but shouldn't be neglected, as seizing could affect starting - safety is paramount.
Speaking of the electronic parking brake making a 'click' sound, I've encountered it while driving an SUV. It might be the normal release mechanism—after the parking brake module releases, it self-locks and emits a slight click to indicate it's OK. However, if the car shakes or the sound is loud after starting, you should suspect that the brake pads haven't fully released, possibly due to dust accumulation or high humidity causing sticking. For safety, don't take it lightly; it's best to visit a repair shop for inspection as soon as possible. Normally, before parking, gently press the brake to stabilize the car before engaging the parking brake to reduce such issues. If everything is normal, there's no need to worry at all.
