What Could Be the Reason for Not Being Able to Open the Car Door with a Key?

[KatherineFitz]

Here are possible scenarios where a key might not open the car door: 1. The remote key is out of battery and cannot open the door. If you are using a remote key, it is likely that either the remote key or the car battery is out of power. 2. The mechanical key fails to open the door. 3. The door cannot be opened in cold weather. In northern winters, the weather can be extremely cold, especially if it is raining. The door locks, handles, and door frames may freeze, making it impossible to open the door even with force, and potentially damaging the car paint and seals. 4. The rear door cannot be opened. If the central locking system is disengaged but the rear door still won't open, it might be due to accidentally activating the child safety lock switch on the door, which prevents the rear door from being opened from the inside.