What Causes the Car Key to Not Turn?

[DeVivienne]

Here are the specific reasons why the car key may not turn: 1. Improper steering wheel angle: After starting the vehicle with the key, the steering wheel automatically unlocks. Sometimes, when parked at a certain angle, the steering wheel may be positioned in a way that allows the key to turn for ignition 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 steering wheel may rotate due to force, triggering the self-locking function. This causes the steering lock pin to engage with the steering column, making the steering wheel immovable. Even if the key is inserted and turned forcefully, it won't budge. This is the vehicle's anti-theft system detecting a potential theft risk and locking the steering wheel to prevent theft.

[LeLouis]

I've also experienced the situation where the car key won't turn. The most common reason is steering wheel lock. If the wheels aren't straightened when parking, the anti-theft device will lock, causing the key to get stuck and unable to turn. I suggest first gently wiggling the steering wheel left and right; if it loosens, the lock can be released. It's also common for worn or deformed keys to get stuck when inserted, especially old keys that have been used for years with worn edges getting jammed in the hole. Additionally, a dead battery in smart keys can cause malfunctions, where the remote doesn't respond or the engine fails to start - keeping a spare new battery to replace it can solve this. Dust or foreign objects blocking the keyhole also happens occasionally; try using a hair dryer to blow it out or a small brush to clean it. If none of these work, it might be an internal fault in the ignition switch, requiring professional inspection. In any case, don't force the key to turn to avoid damaging components and increasing repair costs. Paying attention to parking habits and key maintenance can reduce such troubles.