What Causes the Handbrake of a Sedan to Fail to Hold?

1 Answers
StAlyssa
07/30/25 9:47am
Introduction to the reasons why the handbrake fails to hold: 1. Braking effect: The ABS activates, but the car still shows no obvious braking effect, and the braking distance significantly increases. 2. ABS not activated: The wheels do not lock up, the ABS does not activate, and the car rolls forward. The first issue likely stems from the tires, possibly due to severe tire wear, leading to a reduced static friction coefficient, which makes the tires prone to locking up and causes the ABS to intervene too early, failing to generate effective braking force and compromising safety. Solution: 1. Replace the tires: It is recommended to switch to a slightly larger tire size for a significantly improved braking effect. The second issue likely originates from the braking system itself. 2. Replace the brake pads: If a noticeable friction sound is heard during braking, it indicates severely worn brake pads that should be replaced immediately. If no sound is heard, the issue may lie with a malfunctioning brake pump, preventing the brake piston from working effectively. In such cases, it is advisable to promptly visit a repair shop to service the brake assembly.
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