What to Do When the Car Key Can't Open the Door?
2 Answers
If the mechanical key can't turn and open the car door, the first possibility is that the car's central locking system is in an electronic lock state. You need to wait for one or two hours until the lock is released before attempting to unlock it again. Additionally, there are three other possibilities: incorrect operation, a faulty lock cylinder, or an issue with the mechanical key. Below are detailed explanations for these three scenarios: 1. Incorrect operation: The key is being turned in the wrong direction. In most cases, turning the key clockwise unlocks the door, while turning it counterclockwise locks it. 2. Faulty lock cylinder: Most car owners use the remote key to unlock or lock the door and rarely use the mechanical key. The lock cylinder may rust due to prolonged disuse. You can try adding some engine oil to the lock cylinder for lubrication to see if it can be opened. If it still doesn't work, the lock cylinder may need to be replaced. 3. Issue with the mechanical key: In most cases, the mechanical key doesn't have major problems. If there is an issue, it might be due to a poorly duplicated key, which may need to be replaced.
I've dealt with the issue of keys not unlocking car doors several times. The most common reason is a dead remote key battery, which I can easily fix by replacing the small battery myself. Button batteries are available at electronic supermarkets, and it's a simple process. If the door lock is rusty, try spraying some WD-40, but don't overdo it to avoid making a mess. If the key completely fails, it might be due to strong interference, such as near shopping malls with powerful signals - try moving away and testing again. I've also experienced a key being damaged from a fall, so I bought a spare key to keep in the car permanently - no more worries. Safety tip: Forcing the door open can damage the vehicle and is dangerous. If you really can't open it, calling the 4S shop or emergency services is the safest option.
