Why can't the newly matched key turn when inserted?

[Edward]

The specific reasons why a newly matched key cannot turn when inserted: 1. Improper steering wheel angle: After starting the vehicle with the key, the steering wheel automatically unlocks. Sometimes, when parking, the steering wheel is positioned at a certain angle where the key can only turn to ignite but not unlock, resulting in the key not turning. You can gently turn the key with your right hand while lightly rotating the steering wheel with your left hand to naturally unlock it. 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 parked, the force can cause the steering wheel to rotate, triggering the self-locking function. The steering lock pin engages with the steering column, making the steering wheel immovable. Even if the key is inserted and turned forcefully, it won't turn. This is the vehicle's anti-theft system detecting a potential theft risk, thus locking the steering wheel to prevent theft.