Lock button not working mainly due to the following reasons: Signal interference source: There is a signal interference source near the car. Low battery: It could be due to insufficient battery power, try replacing the battery. Poor contact: It may also be caused by poor contact between the battery and the installation base, or a damaged button. Key password lost: It could also be that the remote control's password is lost and needs to be rematched. Mainboard failure: The circuit mainboard inside the key is faulty and needs to be repaired at a service point. Solutions for the lock button not working are as follows: Use mechanical key: If there is a signal interference source near the car, it cannot work normally under magnetic interference. At this time, you can use the spare mechanical key to lock the car. Generally, there is a hidden mechanical key inside the remote key. Replace key battery: It could be due to insufficient battery power, try replacing the battery. Alternatively, the circuit mainboard inside the key is faulty and needs to be repaired at a service point. It may also be due to reversed battery polarity, poor contact between the battery and the installation base, or a damaged button. Also use mechanical key: It could be due to remote lock failure or aging of the car's remote transmitter antenna, making the remote key ineffective. At this time, you can use the spare mechanical key to lock the car. Rematch key: It could also be that the remote control's password is lost and needs to be rematched.
