What are the reasons for insufficient clamping force in the H6 electronic parking brake?
2 Answers
If the H6 dashboard displays a warning about insufficient parking brake clamping torque, we need to check the following points: 1. Whether the brake fluid has not been replaced. Measure the water content in the brake fluid; normally, it should not exceed 3%. If the content exceeds 3%, it needs to be replaced. Excessive water content in the brake fluid can generate gas in the brake lines, leading to poor braking performance. In this case, the brake fluid should be replaced immediately, followed by a test drive to see if the issue is resolved. 2. Damage to the electronic parking brake control unit or parking brake switch, causing a fault. In this situation, it is necessary to visit a professional workshop to use a diagnostic tool to check the control unit for any fault codes and replace the damaged components based on the fault codes. 3. The generator not producing electricity, causing the battery to be undercharged. When using the electronic parking brake, the battery cannot provide the normal supply voltage or current, preventing the rear brake pads from clamping the brake disc to the specified torque. As a result, the dashboard will indicate an issue with the parking brake system.
When the H6 electronic parking brake has insufficient clamping force, there are usually several hardware-related causes. You might find that the motor is stuck or excessively worn, leading to poor power transmission; it could also be due to aging brake components, such as overly thin brake shoes resulting in reduced friction; hydraulic system oil leaks can also weaken the clamping effect. I've driven similar vehicles, and this situation is particularly common after prolonged use. If you frequently park on steep slopes, the wear will accelerate. For safety, it's essential to inspect the braking system every six months, such as using instruments to test clamping force, to detect minor issues early. Additionally, loose mechanical connections are another potential risk point, requiring tightening of components. Overall, don't overlook these small details, as they could lead to vehicle rollaway accidents.
