Anyone know what this fuse controls? Under the bonnet from the main battery on a 2006 T5 ?

[Goobs on tour]

 

[Tycho]

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we do not have this fuse in our 2006 model T5

 

[Resfeber]

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Have a look at this engine bay video at 1.23 seconds.

Clearly your vehicle has been “modified”.
Have you any extra lights at the front or a light bar or an extra cooling fan?
Have you pulled the fuses to see what stops working ?