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What are the reasons for the brake pedal being hard to press in an automatic transmission car?

1 Answers

McNatalie

07/30/25 6:07am

Automatic transmission car brake pedal being hard to press is caused by: 1. The key fob battery is dead; 2. Failure of the car's vacuum booster pump; 3. Obstruction on the brake pedal; 4. Brake system failure. The brake system consists of a vacuum booster pump, master cylinder, wheel cylinder, brake pads, and brake discs. Methods of applying brakes under different circumstances are: 1. When the brake pedal is abnormal, use engine braking and shift to a lower gear; 2. In traffic congestion, press the brake pedal gently; 3. On rainy and muddy roads, lightly press the brake pedal repeatedly; 4. In emergency situations, press the brake pedal hard immediately and then release it slowly, followed by repeatedly pressing and releasing the brake pedal gently.

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