What is the reason why a newly matched key cannot be turned?

[FernandoFitz]

Here are the specific reasons why the car key cannot be turned after insertion: 1. Improper steering wheel angle: After starting the vehicle with the key, the steering wheel automatically unlocks. Sometimes, when parking, the steering wheel is placed at a certain angle, and this angle happens to allow only the key to be turned for ignition but not to unlock, resulting in the inability to turn the key. You can gently turn the key with your right hand while lightly turning the steering wheel with your left hand, and the steering wheel will naturally unlock. 2. Steering wheel lock: When the car is turned off, if the steering wheel is turned left or right or the wheels are not straight when parking, the force applied can cause the steering wheel to turn, triggering the self-locking function of the steering wheel. The steering lock pin and the steering column engage together, making the steering wheel immovable. Even if the key is inserted and turned forcefully, it cannot be turned. This is because the vehicle's anti-theft system perceives a risk of theft, so it locks the steering wheel to achieve the anti-theft function.