Electrical Fuses - Mercedes-Benz S-Class Series 2021 Operator's Manual

354 Breakdown assistance

Electrical fuses

Notes on electrical fuses
& WARNING Risk of accident and injury
due to overloaded lines
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher
amperage, the electric line could be overloa‐
ded.
This could result in a fire.
Always replace faulty fuses with speci‐
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fied new fuses containing the correct
amperage.
* NOTE Damage due to incorrect fuses
Electrical components or systems may be
damaged by incorrect fuses, or their func‐
tionality may be significantly impaired.
Only use fuses that have been approved
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by Mercedes-Benz and which have the
correct fuse rating.
Blown fuses must be replaced with fuses of the
same rating, which you can recognize by the
color and fuse rating. The fuse ratings and fur‐
ther information to be observed can be found in
the fuse assignment diagram.
Fuse assignment diagram: in the vehicle docu‐
ment wallet.
* NOTE Damage or malfunctions caused
by moisture
Moisture may cause damage to the electrical
system or cause it to malfunction.
When the fuse box is open, make sure
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that no moisture can enter the fuse
box.
When closing the fuse box, make sure
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that the seal of the lid is positioned cor‐
rectly on the fuse box.
If the newly inserted fuse also blows, have the
cause traced and rectified at a qualified special‐
ist workshop.
Ensure the following before replacing a fuse:
The vehicle is secured against rolling away.
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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 the following
fuse boxes:
Fuse box in the engine compartment on the
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driver's side ( page 354)
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Fuse box on the driver's side of the cockpit
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( page 356)
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Fuse box in the front passenger footwell
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( page 357)
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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 357)
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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 354).
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Have the following tools readily available:
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A dry cloth
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