What to Do When the Car Displays 'Key Not Found'?
2 Answers
Here are the solutions for when the car displays 'Key Not Found': 1. Smart Key Slot: Keyless start models usually have a smart key slot. Some models place it inside the center console, while others position it under the cup holder mat. When the smart key battery is dead, insert the smart key into this slot and wait a moment. The vehicle will detect the key and allow you to start the engine. 2. Mechanical Key Hole: Some keyless start models have a mechanical key hole. Locate this hole and insert the metal key blade from the remote key. Start the car as you would with a traditional key. The mechanical key hole is usually behind the push-start button, which may require prying off the plastic cover to access. 3. Place the Smart Key on the Detection Area: When the smart key battery is dead, place the remote key against the push-start button or another designated detection area. Wait briefly, and the vehicle will recognize the key, allowing you to start the engine. 4. Replace the Battery: You can visit a dealership to replace the smart key battery or purchase the same battery model online and replace it yourself. However, this method is time-consuming and not suitable for emergencies.
When your car displays 'key not found,' it is often caused by a dead key fob battery, which requires replacing the coin cell battery. Keeping the key in your pocket or wallet for too long can accelerate battery drain, and being too far from the car may weaken the signal—try moving closer to the door or center console and retrying. Signal interference inside the car, such as from phones or metal objects, can block the signal; try moving electronic devices away. Test with the spare key to determine if the primary key is faulty. If that doesn’t work, turn off the engine and wait 2-3 minutes for the system to reset, then restart the car. If the issue persists, the key’s internal chip or the car’s receiver module may be damaged, requiring inspection at a professional repair shop where diagnostic tools can identify the problem. To prolong battery life, avoid leaving the key in high-temperature areas, such as inside a sun-exposed car.
