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Disassembling the Key Fob for Battery Replacement

Model: BMW Serie 5 E39 - Years: 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Part: Key

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Video tutorial

Every key fob used for locking and unlocking the doors contains a small battery that powers the electronic circuit of the transmitter. When this battery runs out, it becomes impossible to open the doors remotely.

Fortunately, you can access the vehicle using the mechanical key. Replacing the battery is simple; use a small tool to separate the plastic cover that hides two screws, remove the screws, then open the two plastic halves and take out the battery. Replace the battery with a new one that has the same specifications.

These batteries can be found at any supermarket.


Updated on 4 February 2026 by ScegliAuto


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Fuses Placement and Diagram for the Mercedes Vito

Check the diagram and placement of the fuse boxes for the Mercedes Vito by following the instructions below. First, open the bonnet and locate the external fuse box; you will find it by removing the plastic cover situated at the top of the engine compartment, as shown in the video. At this point, find another fuse box in the cabin, specifically under the driver's seat; use the owner's manual to find the fuse diagram and replace any faulty fuse with a new one that has the same amperage rating.

Watch the video!


by ScegliAuto

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