What to Do When Car Door Locks Won't Lock?
2 Answers
If the remote lock fails or the car's remote transmitter antenna is aging, causing the remote key to not work, you can use the spare mechanical key to lock the door. If there is strong magnetic field interference around the car, the smart key may not function properly under such conditions. Try parking the car in a different location. Some criminals use radio signal jammers that emit electromagnetic waves at the same frequency as the lock signal, temporarily disabling the electronic code of the central lock.
Last time my car had the same issue, and after struggling for a while, I found out the key was almost out of battery. When the car key's battery is low, the signal transmission distance becomes shorter, and you have to press it right next to the door to lock it. Another possibility is strong electromagnetic interference nearby, like the card readers in mall underground garages, which can easily disrupt the signal. If the mechanical key can manually lock the door when inserted, but the remote doesn’t work, it’s most likely a key issue. Also, don’t forget to check if a door isn’t closed properly—whether it’s the trunk or a door slightly ajar, the central locking system will refuse to work. If the trunk sensor fails, the system might think it’s still open. In an emergency, use the mechanical key to lock the driver’s door, and the other three doors will follow—this is the most reliable old-school method.
