Is it normal for the electronic parking brake to make loud noises when engaging and disengaging?
2 Answers
This situation requires specific inspection. Some models of electronic parking brakes produce loud noises when new. It's best to compare with the same model. If the sound is the same, it's normal; if different, there might be an issue with the brake caliper. Below is extended information about electronic parking brakes: First, the reasons for the noise: The electronic parking brake makes motor noise when engaging and disengaging. This is the sound of the motor operating the rear wheel brake caliper or the tensioner, which is normal and no need for excessive concern. However, if other abnormal noises occur, the car should be inspected promptly to ensure driving safety. Second, the advantages of electronic parking brakes: 1. Easy operation: The biggest advantage of electronic parking brakes is their simplicity. Just flipping a switch can activate the parking brake function. Moreover, the settings of electronic parking brakes are more user-friendly, allowing them to be engaged under any circumstances. 2. High safety factor: If mistakenly pressed while driving, the electronic parking brake won't engage as the throttle is still in the working position. If pressed during emergency braking, the electronic parking brake won't lock the wheels but will provide stronger braking force to assist in stopping.
I've been driving cars with electronic parking brakes for years, and the startup and shutdown sounds are mostly normal. The buzzing sound is from the small motor inside working to tighten or release the brake pads. The volume varies between different car models; luxury cars might be quieter, while economy cars can be louder. For example, my friend's Volkswagen sounds like a buzzing bee—quite noisy—but it's always been reliable in operation. Unless the sound changes to a clicking or metal grinding noise, indicating the actuator is stuck or there's a brake component failure, which requires immediate repair, there's no need to worry. Consistency in the sound is key; if the volume is similar each time you operate it, everything's fine. Don't stress over normal noise—it's just how the car is designed. For extra peace of mind, have a technician check the wiring and fuses during regular maintenance.
