Passat Continuously Displays 'Key Not Found'

1 Answers
DelLilah
07/30/25 12:56am
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.
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