Mercedes-Benz B-Class hatchback 2022 Owner's Manual page 384

Opening
Lift carpet 1 in the direction of the arrow.
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2
Loosen screws and remove the fuse box
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lid from the top.
Closing
Place the lid on the fuse box.
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Tighten screws 2.
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Fold back the carpet.
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Breakdown assistance 381
Opening and closing the fuse box in the load com-
partment
Observe the notes on electrical fuses
( page 379).
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Open the load compartment floor.
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Fuse box 1 is located underneath the load com-
partment floor.