Reasons for Brake Pedal Vibration When Braking
1 Answers
When experiencing brake pedal vibration during braking, first exclude a normal phenomenon where the ABS system causes pedal rebound during emergency braking. On slippery roads, the ABS anti-lock system activates, resulting in pedal vibration—this is normal. If confirmed as a malfunction, inspect whether brake discs/pads are severely worn or if runout exceeds tolerance, requiring measurement and replacement of faulty components. Below are explanations for brake pedal vibration during braking: 1. For manual transmissions, slight vibration in both brake and clutch pedals under high-torque low-gear conditions is normal. 2. For automatic transmissions, pedal vibration when stopped in D gear (e.g., at traffic lights) is normal; shifting to N or P gear eliminates strong sensations. 3. Uneven tire tread wear or inconsistent tire pressure can cause brake pedal vibration. 4. Warped brake discs induce vibration, especially during hard braking—replacement is recommended. 5. If the ABS warning light intermittently illuminates during low-speed braking, verify potential ABS sensor failure. 6. High-speed braking with pedal pulsation and "grinding" noises indicates normal ABS pump operation. 7. Check for resonance caused by loose underbody shield screws.