What Causes the Noise When Pressing the Brake in P Gear?
2 Answers
p> The noise when pressing the brake in P gear is caused by rust on the brake disc or brake pads, or new brake pads. The specific reasons are as follows: Rust on the brake disc or brake pads: After parking for a long time, especially in humid weather or after rain, some rust or dirt may appear on the brake disc or brake pads. This issue can usually be resolved by driving for a while, or by applying butter or special lubricating oil to the connection between the brake pads and the brake caliper. New brake pads: A similar noise may occur when pressing the brakes in a new car. If it's a new car or the brake pads have just been replaced, the new brake pads and brake disc need a break-in period. This noise is completely normal during this process.
My own car also makes this sound. I remember last time in the parking lot, when I pressed the brake to shift gears, there was always a clicking noise that startled me. Later, I asked a friend and learned that this is a normal design. The P (Park) position has a locking mechanism, and when you press the brake, it releases a small locking pin, allowing you to shift from P to R (Reverse) or D (Drive). The sound is like mechanical components moving. Most of the time, it's crisp, like a light tap from a wrench, and nothing to worry about. However, if the sound becomes unusually loud, continuous, or accompanied by a sticking sensation, it might indicate a worn-out locking pin or insufficient lubrication. If ignored for a long time, the car might get stuck in P and fail to shift, which would be troublesome. In such cases, I always listen carefully to locate the sound and ensure the brake lights are on, as functioning lights confirm the brake signal is reaching the transmission. Safety first—occasional sounds are nothing to worry about, but if it’s abnormal, visit a repair shop promptly.
