2014-2021 Mercedes C Class 4 Door Breakdown assistance -> Electrical fuses User Manual
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Breakdown assistance -> Electrical fuses for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

Breakdown assistance 405  
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Tow starting the vehicle (emergency engine  
start)  
Tow-start the vehicle while the clutch pedal  
is fully depressed.  
Slowly release the clutch pedal.  
Immediately shift to neutral if the engine  
starts.  
Pull over and stop the vehicle, paying atten‐  
tion to road and traffic conditions.  
Remove the tow bar.  
Remove the towing eye.  
Have the vehicle checked at a qualified spe‐  
cialist workshop.  
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Always replace faulty fuses with speci‐  
fied new fuses containing the correct  
amperage.  
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Vehicles with automatic transmission  
NOTE Damage to the automatic trans‐  
mission due to tow-starting  
NOTE Damage due to incorrect fuses  
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Electrical components or systems may be  
damaged by incorrect fuses, or their func‐  
tionality may be significantly impaired.  
The automatic transmission may be damaged  
in the process of tow-starting vehicles with  
automatic transmission.  
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Only use fuses that have been approved  
by Mercedes-Benz and which have the  
correct fuse rating.  
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Vehicles with automatic transmission  
must not be tow-started.  
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Vehicles with automatic transmission must  
not be tow-started.  
Blown fuses must be replaced with fuses of the  
same rating, which you can recognise by the col‐  
our and fuse rating. The fuse ratings and further  
information to be observed can be found in the  
fuse assignment diagram.  
Fuse assignment diagram: on the fuse box in  
the boot (/ page 407).  
Electrical fuses  
Notes on electrical fuses  
Vehicles with manual transmission  
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Observe the notes on towing away  
(/ page 401).  
If necessary, allow the engine and exhaust  
system to cool down.  
Switch the ignition on.  
Engage second gear.  
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WARNING Risk of accident and injury  
due to overloaded lines  
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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.  
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Release the electric parking brake.  
This could result in a fire.  
406 Breakdown assistance  
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Fuse box on the driver's side of the cockpit  
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Always switch off the windscreen wip‐  
ers and ignition before opening the  
engine bonnet.  
NOTE Damage or malfunctions caused  
by moisture  
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(/ page 407)  
Fuse box in the front passenger footwell  
(/ page 407)  
Fuse box in the boot on the right-hand side  
of the vehicle, when viewed in the direction  
of travel (/ page 407)  
Moisture may cause damage to the electrical  
system or cause it to malfunction.  
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When the fuse box is open, make sure  
that no moisture can enter the fuse  
box.  
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When closing the fuse box, make sure  
that the seal of the lid is positioned cor‐  
rectly on the fuse box.  
Opening and closing the fuse box in the  
engine compartment  
Requirements:  
If the newly inserted fuse also blows, have the  
cause traced and rectified at a qualified special‐  
ist workshop.  
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A dry cloth and a screwdriver are available.  
Observe the notes on electrical fuses  
(/ page 405).  
Ensure the following before replacing a fuse:  
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Opening  
The vehicle is secured against rolling away.  
All electrical consumers are switched off.  
The ignition is switched off.  
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WARNING Risk of injury from using the  
windscreen wipers while the engine bon‐  
net is open  
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Turn clip 2 on cover 1 a quarter-turn to  
The electrical fuses are located in various fuse  
boxes:  
the left.  
When the engine bonnet is open, and the  
windscreen wipers are set in motion, you can  
be trapped by the wiper linkage.  
Fold cover 1 up in the direction of the  
arrow.  
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Fuse box in the engine compartment on the  
driver's side (/ page 406)  
Breakdown assistance 407  
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Insert lid 4 into the bracket at the rear of  
the fuse box.  
Fold down lid 4 of the fuse box and tighten  
screws 3.  
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Fold down cover 1.  
Turn clip 2 on cover 1 a quarter-turn to  
the right.  
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Close the bonnet.  
Opening and closing the fuse box in the  
cockpit  
The fuse box is on the side of the dashboard  
under a cover.  
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Contact a Mercedes-Benz Service Centre for  
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Remove any existing moisture from the fuse  
box using a dry cloth.  
Loosen screws 3 and remove fuse box lid  
4 from the top.  
Open cover 1 in the direction of the arrow  
further information.  
and remove it.  
Opening and closing the fuse box in the front  
passenger footwell  
Opening and closing the fuse box in the boot  
Closing  
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Observe the notes on electrical fuses  
(/ page 405).  
Observe the notes on electrical fuses  
(/ page 405).  
Check whether the seal is positioned cor‐  
rectly in lid 4.  
408 Breakdown assistance  
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Fold cover 1 up in the direction of the  
arrow.  
The fuse assignment diagram is in a recess on  
the side of the fuse box.  

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