What are the reasons why the Audi A4 cannot detect the key?

1 Answers
DelaneyAnn
07/30/25 4:36am
Audi A4 cannot detect the key for the following reasons: Insufficient battery power in the key: For example, the battery in the key has not been replaced for a long time. Solution: Replace the battery. Here is a simple way to check: If you press the button on the remote key and the red indicator light flashes, it means the key battery is functioning normally. Issues with the key itself: For example, the control unit in the key is damaged. Solution: Get a new key. Signal interference nearby: You can first try using the mechanical key to drive the car to another location. If it works, it indicates that the remote key failure is caused by severe signal interference.
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