There are apparently 4 fuse boxes in the g20.
1. The main fuse box is in the trunk, behind the right wheel arch (passenger side for LHD). There is an access panel.
2 & 3. There are 2 more interior fuse boxes, each of which can be found at the base of the A-pillars in the front passenger foot well areas.
Quote:
2 more power distribution boxes are installed in addition to the rear right power distribution box: Front right power distribution box and front left power distribution box.
The front power distribution boxes are found each at the A-pillar in the footwell.
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https://www.newtis.info/tisv2/a/en/g...box/1VnZ70IAIn
4. In the engine compartment. I believe it's to the right of the motor (when facing the engine), but have not confirmed yet.
Note: there are several smaller power distribution blocks throughout the car with fuses, but I personally wouldn't use those or the engine bay one for most of my electronic needs