What are the reasons for insufficient clamping force in the h6 electronic parking brake?
2 Answers
h6 electronic parking brake insufficient clamping force reasons are: 1. Excessive moisture in the brake fluid; 2. Damage to the electronic parking brake control unit or parking brake switch; 3. Insufficient generator power. The electronic parking brake is a technology that achieves parking braking through electronic control. The structural principle of the electronic parking brake is the application of electronic parking brake technology in cars, which is the caliper-integrated electronic parking brake system. This system replaces the traditional parking brake handle, mechanical lever, and control cables with electronic buttons and motor components. When parking, after the driver operates the electronic button of the electronic parking brake system, the electronic control unit will control the motor integrated in the left and right brake calipers to act, driving the brake caliper piston to move and generate mechanical clamping force to complete the parking.
My H6 recently had an issue with the electronic parking brake not holding tight, and the cause was later found at the repair shop. Worn-out brake pads are the most common factor—when you hear a sharp noise while pulling the parking brake, it’s usually a sign the pads are failing. The small motor controlling the parking brake can also lose power over time, especially noticeable on humid or rainy days. Additionally, oil contamination or rust on the brake discs can reduce friction—I once experienced this after washing the car with a high-pressure water jet. Aging wiring connectors can also cause poor signals; last time I checked, I found a loose plug when removing the wheel hub. It’s best to inspect all these thoroughly, as parking safety is no small matter. Whenever I notice anything unusual, I take it to the 4S shop immediately.
