* Damaged or dirty key: The key may be damaged or dirty, which could prevent it from being properly read by the ignition. Try cleaning the key with a soft cloth and isopropyl alcohol. If the key is damaged, you will need to replace it.
* Faulty ignition switch: The ignition switch may be faulty, which could prevent it from properly reading the key. You will need to have the ignition switch repaired or replaced.
* Faulty immobilizer: The immobilizer is an anti-theft device that prevents the car from starting if the correct key is not used. If the immobilizer is faulty, it may prevent the car from starting even if the key is correct. You will need to have the immobilizer repaired or replaced.
If you are unable to resolve the issue yourself, you will need to take your car to a mechanic for further diagnosis and repair.
