Passat Continuously Displays 'Key Not Found'
2 Answers
Vehicle not detecting the key is usually caused by a dead key battery. The specific reasons and solutions are as follows: Reasons why the vehicle does not detect the key: Typically, the vehicle not detecting the key means the smart key is either not inside the car or not within the effective range. If the key is inside the car, then check the battery level of the key. However, insufficient battery power will prevent the engine from starting or the doors from unlocking. Using the car smart key: It consists of a control system comprising a transmitter, remote central locking control module, driving authorization system control module (three receivers), and related wiring harnesses. The remote control and transmitter are integrated into the car key. The vehicle can enter a locked or unlocked state based on signals from the smart key, and can even automatically close the windows and sunroof.
As a Passat owner, I've encountered the 'key not detected' issue several times. Usually, it's a minor problem like a dead remote key fob battery – replacing it solves the issue. Sometimes, when the key is in a bag, it can get interfered with by other electronic devices, such as phones or metal objects blocking the signal. Trying a different position or bringing the key closer to the start button often helps. If there's a malfunction in the car's smart key system, it might require a visit to the 4S店 to check the induction module or perform a software update. I recommend regularly checking the key battery life, as the Passat's onboard system is particularly sensitive to battery levels – it's best to replace it annually. Always ensure the key is within the effective range before driving and don't keep it too far away. While these issues can be annoying, they're usually easy to handle, so there's no need to overstress.
