Why is there a strange noise when shifting to P gear?

[DiDaisy]

This is a normal phenomenon. The P gear has a locking mechanism. If you shift into P gear while driving, it will make a strange noise, which can damage the transmission. Related explanations are as follows: 1. When driving, do not shift into P gear. If you shift into P gear while driving, it may cause damage to the locking mechanism of the automatic transmission. 2. Automatic transmission vehicles generally have a P gear. After shifting into P gear, the locking mechanism will lock the gears of the transmission, which is equivalent to indirectly locking the wheels. 3. The P gear is used when parking and turning off the engine. If you do not shift into P gear before turning off the engine, the engine will not be able to shut down. 4. If the gear is not in P gear before starting the engine, the engine will also not be able to start. This is a safety design by the car manufacturer.

[VanLeah]

A rattling noise when shifting to Park (P) gear may indicate issues with the parking pawl mechanism, primarily caused by worn locking teeth or incomplete alignment. I've encountered similar cases where the clicking sound usually stems from loose or corroded linkage in the gear selector. Additionally, internal gear wear in the transmission or electronic control failures can also generate abnormal noises. This problem occurs more frequently when parking on uneven surfaces or engaging P gear after hard braking. Immediate troubleshooting is recommended: test parking on level ground to see if the noise disappears. If persistent, check transmission fluid level – low fluid or contamination accelerates component wear. For safety concerns, seek professional diagnosis promptly to replace damaged parts. Developing the habit of applying the parking brake before shifting to P gear can minimize such occurrences.

[SanSarah]

A few days ago, my car also made a strange creaking noise when shifting to P gear, which was particularly annoying. Experience tells me it's most likely due to worn shift linkage components or an aged/loosened locking spring. For electronic shift models, it could be a sensor malfunction or software needing updates. Don't ignore it - prolonged minor noises may lead to shifting difficulties or safety risks like failure to lock the vehicle. When I dealt with it myself, I first documented the scenarios when the noise occurred (e.g. more noticeable on slopes?), then had the mechanic disassemble and inspect the linkage at the repair shop. If replacement costs are reasonable, get new parts promptly. Avoiding frequent hard braking in daily use can slow component aging. Ultimately, don't hesitate to spend time identifying the root cause.

[LeBryce]

A clunking sound when shifting to Park (P) usually indicates component aging and signals maintenance time. I recommend regular transmission servicing, changing the fluid every 3 years to prevent internal corrosion that causes noise. Parking habits matter: ensure wheels are completely stopped before engaging P, and avoid operating on slopes with partial clutch engagement. Occasional sounds may be normal mechanical noise; but daily occurrences require inspection to prevent transmission assembly damage. A concise maintenance schedule extends vehicle lifespan.