What Causes Parking Brake Failure Preventing Ignition?

[NadiaLynn]

Parking brake failure preventing engine start is typically caused by a malfunctioning brake light switch, which prevents the ECU from receiving the proper ignition signal. Replacing the brake light switch can resolve this issue. This problem commonly occurs in automatic transmission models, as the brake light switch also serves the function of providing power-on signal feedback for engine start. The parking brake, commonly known as the handbrake, functions to provide resistance when parking, preventing the vehicle from rolling. The correct usage method of the parking brake is as follows: 1. To engage the parking brake, firmly depress the brake pedal and fully pull up the parking brake lever. To release the parking brake, depress the brake pedal, slightly lift the parking brake lever, press the button on the handle with your thumb, then lower the lever to its original position. 2. When parking on an incline, if you shift into P position before applying the parking brake, the vehicle's weight may make it difficult to shift out of P when preparing to drive. 3. When preparing to drive, always shift the gear lever out of P position before releasing the parking brake.