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How to Change the Key Battery of a Volkswagen Polo

Model: Volkswagen Polo MK IV, Polo IV, Polo 4, MK 4, 9N - Years 2001-2009
Part: Key

Here’s how to change the key battery of a Volkswagen Polo: simply lift the flip key and work on the outer edge of the lower part of the remote, on the side with the Volkswagen symbol. If you can manage it with your fingers, or with a small screwdriver, lever off the lower cover until it comes off. Inside is the battery, a common CR2032 that you can find at any supermarket or newsagent for a few pounds. Using the same small screwdriver, remove the exhausted battery and replace it with a new one, paying attention to the polarity. Close the cover and the job is done.

Updated on 5 July 2026 by ScegliAuto

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On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

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