Mercedes-Benz A-CLASS SEDAN 2020 Fuses and Fuse Box User Manual
Introduction
Welcome to the Mercedes-Benz A-Class Sedan 2020 world, where style and innovation converge. We set out on a journey today to investigate the vital safety elements of this amazing vehicle: the fuses and fuse box. Safety is of the utmost significance in the fast-paced world of automobile engineering, and Mercedes-Benz has always been at the forefront of cutting-edge technology to provide the maximum protection for its passengers. The Fuse Box, a covert yet potent protector who plays a crucial part in protecting the vehicle’s electrical components, is at the center of this safety system.
Fuses serve as the gatekeepers, preventing overloading and potential damage to electrical circuits. They successfully break the circuit and protect crucial components from damage since they are made to melt when exposed to too much current. An intricately placed fuse box in the car has a network of these safety fuses, each of which is intended to protect a particular electrical function. The Mercedes-Benz A-Class Sedan 2020 is not simply an impressive piece of automotive engineering; it also perfectly captures the brand’s dedication to ensuring your safety while driving. The Fuse Box acts as a silent sentinel, providing peace of mind as you set out on each journey. It contains a wide variety of fuses that secure vital systems including lighting, power windows, air conditioning, and more.
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 overloaded.
This could result in a fire.
Always replace faulty fuses with specific 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 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: on the fuse box in the engine compartment.
Moisture may cause damage to the electrical system or cause it to malfunction.
- When the fuse box is open, make sure that no moisture can enter the fuse box.
- When closing the fuse box, make sure 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.
- All electrical consumers are switched off. R The ignition is switched off.
The electrical fuses are located in various fuse boxes:
- Fuse box in the engine compartment on the left-hand side of the vehicle, when viewed in the direction of travel
- Fuse box in the front passenger footwell
- Fuse box in the center of the trunk
Opening and closing the fuse box in the engine compartment
Requirements:
A dry cloth and a screwdriver are available.
Observe the notes on electrical fuses.
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 and ignition before opening the engine hood.
- Open the hood.
- Remove any existing moisture from the fuse box using a dry cloth.
- Loosen screws 1.
- Press clamps 2 and lift the fuse box lid up and out.
The fuse allocation chart is in a recess on the side of the fuse box.
Closing
- Check whether the seal is positioned correctly in the lid.
- Place the lid on the fuse box.
- Make sure that clamps 2 engage.
- Tighten screws 1.
- Close the hood.
Opening and closing the fuse box in the front passenger footwell
Observe the notes on electrical fuses.
Opening
- Lift carpet 1 in the direction of the arrow.
- Loosen screws 2 and remove the fuse box lid from the top.
Closing
- Place the lid on the fuse box.
- Tighten screws 2.
- Fold back the carpet.
Opening and closing the fuse box in the trunk
Observe the notes on electrical fuses.
Open the trunk floor
Fuse box 1 is located in the center underneath the trunk floor.
FAQs
A fuse is a type of electrical safety device intended to guard against harm from excessive current to a vehicle’s electrical circuits.
Normally, the fuse box is found in the engine compartment, on the driver’s side, next to the firewall. Additionally, the cabin may house a separate fuse box.
Open the hood and look for the fuse box cover to access the fuse box. To view the fuse layout and access the fuses, remove the lid.
The amperage rating is typically indicated by the fuse’s color. However, Mercedes-Benz might have a different color-coding scheme; for more information, consult the owner’s manual of your car.
Inside the fuse body, a broken wire will be visible if the fuse has blown. The metal connector within the fuse will moreover be clearly separated.
To remove and replace a blown fuse, you usually simply need a set of fuse pullers or needle-nose pliers.
No, never switch out a fuse for one with a greater amperage rating.
Using a fuse with a higher amperage rating than advised may harm the car’s electrical system or perhaps put people in danger of fire. Fuse blowouts could become common if a lower-rated fuse is used.
The owner’s manual for your car or the interior of the fuse box cover will both list each fuse’s amperage rating.
A persistent fuse blowout could be a sign of an electrical problem. To identify and fix the issue, have a certified mechanic examine the vehicle’s electrical system.
The majority of automobiles, including the 2020 Mercedes-Benz A-Class Sedan, are equipped with spare fuses that are kept in the fuse box or another location inside the cabin.
Replacing a fuse is an easy task that you can complete on your own. It is essential to seek professional assistance if you are hesitant or uneasy working with electrical components.
Short circuits, overloaded electrical circuits, and defective parts are just a few of the causes of fuses blowing.
If a freshly changed fuse goes out right away, there can be a bigger electrical problem. Instead of replacing the fuse, get the issue identified and fixed by a qualified mechanic.
It’s a good idea to check the fuses if you suspect an electrical problem or as part of routine car maintenance.
Useful Links
Download Manuals: Owner’s Manuals | Mercedes-Benz USA
View Full Manual: Mercedes-Benz A-CLASS SEDAN 2020 User Manual