Mercedes-Benz CLA 2020 Operator's Manual page 421

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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left-hand side of the vehicle, when viewed in
the direction of travel ( page 419)
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Fuse box in the front passenger footwell
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( page 420)
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Fuse box in the center of the trunk
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( page 421)
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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 418).
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Opens
& 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.
Open the hood.
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Breakdown assistance 419
Remove any existing moisture from the fuse
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box using a dry cloth.
Loosen screws 1.
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Press clamps 2 and lift the fuse box lid up
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and out.
The fuse allocation chart is in a recess on the
side of the fuse box.