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How to Replace the Key Battery on a New Volkswagen Passat

Model: Volkswagen Passat MK 8, 3G, B8 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Key

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Video tutorial

If the smart key for your new Volkswagen Passat has suddenly stopped working and you want to replace the battery inside, follow these steps. First, take the key and press the button on the top of the cover to release the emergency key. Next, use the emergency key to open the cover and remove the old button battery.

Finally, install the new battery and correctly reassemble the cover, ensuring to insert the emergency key back in.


Updated on 13 June 2026 by ScegliAuto


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Where is the cigarette lighter fuse on the Ford Fiesta?

The fuse for the cigarette lighter socket on the 2010 Ford Fiesta is located inside the fuse box within the vehicle. Specifically, the fuse is found in the driver’s side glove compartment. To check the fuse after confirming that the socket is not working, you need to remove the entire compartment. The relevant fuse is numbered 6 and rated at 20 watts. Once you have removed the damaged fuse, insert a new one to restore proper function to the socket. If the problem persists, it indicates an issue with the control unit, in which case you will need to visit a garage for a diagnostic check.

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