What Could Be the Reason When the Car Key Can Unlock the Car but Not Start the Engine?

[MacWyatt]

When the car key can unlock the car but not start the engine, it may be due to the engine immobilizer system, absence of a chip inside the key, or a dead battery. Here are the specific details: Types of Keys: Common keys on the market include mechanical keys, remote keys, touchscreen LCD keys, and smart wristband keys. Regardless of the type, their basic functions are to unlock the car door and start the engine. Some remote and touchscreen LCD keys can also enable features like automatic parking and viewing vehicle information. Remote Keys: Remote keys allow users to unlock and lock the car from a distance without inserting the key into the lock. Their biggest advantage is that, whether it's day or night, users don't need to locate the lock hole or go through the cumbersome process of inserting the key to open the door. They can conveniently unlock (open) and lock (close) the car from a distance. Remote keys can also open the trunk and fuel tank cap from outside the car, and close the windows and retract the side mirrors when locking the car.