Why does the brake suddenly become very hard to press when reversing?

[CaydenMarie]

When the brake suddenly becomes very hard to press while reversing, it is usually due to a leak or malfunction in the brake booster pump. Here are the detailed explanations regarding the reversing brake: 1. Fault Details: In case of an unexpected brake issue, it is important to repeatedly press the brake pedal several times. This action applies pressure to the braking system where air might be trapped in the oil pipes, and with repeated pressing, there is a chance to restore the braking force. 2. Precautions: If distance permits, try to use intermittent braking (pump the brakes). This method can reduce wear on the vehicle's brake pads and tires. Additionally, always check the rearview mirror. If there is a vehicle approaching from behind without slowing down, turn on the hazard lights and prepare to change lanes in advance.