Mercedes-Benz S-Class 2020 Operator's Manual page 445

The ignition is switched off.
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The electrical fuses are located in the following
fuse boxes:
Fuse box in the engine compartment on the
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driver's side ( page 443)
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Fuse box on the driver's side of the cockpit
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( page 444)
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Fuse box in the front passenger footwell
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( page 444)
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Fuse box in the trunk on the right-hand side
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of the vehicle, when viewed in the direction
of travel ( page 445)
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Opening and closing the fuse box in the
engine compartment
Requirements:
Observe the notes on electrical fuses
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( page 442).
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Have the following tools readily available:
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A dry cloth
-
A screwdriver
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Opening
& WARNING Risk of injury from using the
windshield wipers while the engine hood
is open
When the engine hood is open and the wind‐
shield wipers are set in motion, you can be
trapped by the wiper linkage.
Always switch off the windshield wipers
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and ignition before opening the engine
hood.
Breakdown assistance 443
Release retaining clips 1.
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Pull cover 2 up.