Mercedes-Benz E-Class Coupe 2021 Operator's Manual page 303

All electrical consumers are switched off.
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The ignition is switched off.
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The electrical fuses are located in various fuse
boxes:
Fuse box in the engine compartment on the
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driver's side ( page 301)
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Fuse box on the driver's side of the cockpit
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( page 302)
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Fuse box in the front passenger footwell
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( page 302)
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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 302)
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Opening and closing the fuse box in the
engine compartment
Requirements:
A dry cloth and a screwdriver are available.
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Observe the notes on electrical fuses
( page 300).
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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 301
Turn clips 2 on cover 1 counter-clockwise
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a quarter-turn.
Pull cover 1 upwards in the direction of the
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arrow.