Why can't the Cruze mechanical key work?

[LaKaleb]

The inability to open the door with the Cruze mechanical key may be due to the car being in an anti-theft lock state, where not only the engine is locked, but the central locking system also prevents the mechanical key from opening the door. Professional repair shop assistance is required to address this issue, followed by replacing the battery and using the remote key to open the door. Keys with sensing functions are divided into two types: the first is the conventional folding mechanical key, and the other is the hidden mechanical key. The method to start the car with a mechanical key is as follows: 1. Locate the car's keyhole and insert the key. 2. Ensure the gear is in neutral, then press the brake and clutch. 3. Turn the key to the ON position to start the engine.