Mercedes-Benz S-CLASS SEDAN 2023 Electrical Fuses User Manual
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 specified new fuses containing the correct amperage.
NOTE
Damage due to incorrect fuses Using incorrect fuses can result in damage to electrical components or systems or their functions being considerably restricted.
- Use only fuses approved for Mercedes-Benz with the respective specified 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 further information to be observed can be found on the fuse assignment diagram. Fuse assignment diagram: in the vehicle document 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 that no moisture can enter the fuse box.
- When closing the fuse box, make sure that the seal of the lid is positioned correctly on the fuse box.
If the newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop.
Ensure the following before replacing a fuse:
- The vehicle is secured against rolling away.
- All electrical consumers are switched off.
- The vehicle is switched off.
The electrical fuses are located in the following fuse boxes: - Fuse box on the driver’s side of the engine compartment (/ page 440)
- Fuse box on the driver’s side of the cockpit (/ page 442)
- Fuse box in the front passenger footwell (/ page 442)
- Fuse box in the trunk on the right-hand side of the vehicle, when viewed in the direction of travel (/ page 442)
Opening and closing the fuse box in the engine compartment
Opening and closing the fuse box in the engine compartment Requirements:
- Observe the notes on electrical fuses (/ page 439).
- Have the following tools readily available: Opening
- Depending on the vehicle equipment, access to the fuse box may be limited. Mercedes-Benz recommends consulting a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.
WARNING
Risk of injury from using the windshield wipers when the hood is open. If the windshield wipers start moving when the hood is open, you could be trapped by the wiper linkage.
- Always switch off the windshield wipers and vehicle before opening the hood.
- Release the rotary catches on cover 1 and pull the cover-up and out.
- Remove any existing moisture from the fuse box using a dry cloth.
- Depending on the vehicle equipment, there may be an electrical component 2 on the fuse box lid. If present, unscrew screw 3 and put the component to the side without disconnecting the electrical connection.
- If present, release hose 4 from the retaining clips on the fuse box and vehicle body.
- If present, release hose 5 from the retaining clips in the engine compartment and vehicle body.
- Unscrew screws 6 and fold out bar 7.
- Unscrew screws 8 and remove fuse box lid 9 to the side.
Closing
- Check whether the seal is positioned correctly in lid 9.
- Place lid 9 on the fuse box and tighten screws 8.
- Fold back bar 7 and tighten screws 6.
- If present, engage hoses 5 in the retaining clips in the engine compartment and vehicle body. the holder on the fuse box lid and tighten screws
- Insert cover 1 and engage the rotary catches
Opening and closing the fuse box in the cockpit
- Observe the notes on electrical fuses(/ page 439).
- Fuse box 1 is on the driver’s side on the side of the cockpit under a cover.
- Open cover 1 in the direction of the arrow and remove it.
- Mercedes-Benz recommends you have the fuse box opened at an authorized Mercedes-Benz Center.
Opening and closing the fuse box in the front passenger footwell
Requirements
- Observe the notes on electrical fuses(/ page 439).
Opening and closing the fuse box in the trunk
Requirements:
- Observe the notes on electrical fuses(/ page 439).
- Fold cover 1 down in the direction of the arrow.
Notes on noise or unusual handling characteristics
Make sure there are no vibrations, noises, or unusual handling characteristics when the vehicle is in motion. This may indicate that the wheels or tires are damaged. Hidden tire damage could also be causing the unusual handling characteristics. If you suspect that a tire is defective, reduce your speed immediately and have the tires and wheels checked at a qualified specialist workshop.
Notes on regularly inspecting wheels and tires
WARNING
The risk of injury through damaged tires can cause tire pressure loss.
- Check the tires regularly for signs of damage and replace any damaged tires immediately.
WARNING
The risk of hydroplaning due to insufficient tire tread will result in reduced tire grip. In heavy rain or slush the risk of hydroplaning is increased, in particular where speed is not adapted to suit the conditions.
- Thus, you should regularly check the tread depth and the condition of the tread across the entire width of all tires.
Minimum tread depth for:
- Summer tires: â in (3 mm)
- M+S tires: ã in (4 mm)
- For safety reasons, replace the tires
- Before the legally-prescribed limit for the minimum tread depth is reached.
- Carry out the following checks on all wheels regularly, at least once a month or as required, for example, prior to a long journey or driving off-road:
- Check the tire pressure (/ page 446).
- Visually inspect wheels and tires for damage.
- Check the valve caps.
- Visual check of the tire tread depth and the tire contact surface across the entire width.
- The minimum tread depth for summer tires is â in (3 mm) and for winter tires ã in (4 mm).
Six marks 1 shows where the bar indicators (arrow) are integrated into the tire tread. They are visible once a tire tread depth of approximately á in (1.6 mm) has been reached.
Notes on snow chains
WARNING
Risk of accident due to incorrectly installed snow chains If you have installed snow chains on the front wheels, they may drag against the vehicle body or chassis components.
- Never install snow chains on the front wheels.
- Only install snow chains on the rear wheels in pairs.
NOTE
Damage to components of the vehicle body or chassis due to mounted snow chains If you mount snow chains to the front wheels of 4MATIC vehicles, you may damage components of the vehicle body or chassis.
- Only mount snow chains to the rare wheels of 4MATIC vehicles.
- Observe the following notes when using snow chains:
- Snow chains are only permissible for certain
- Wheel/tire combinations. You can obtain information about this from an authorized Mercedes-Benz Service Center.
- For safety reasons, only use snow chains that have been specifically approved for your vehicle by Mercedes-Benz, or snow chains with the same quality standard.
- Comply with the installation instructions of the snow chain manufacturer.
- If snow chains are installed, the maximum permissible speed is 30 mph (50 km/h).
- Vehicles with Active Parking Assist: do not use Active Parking Assist when snow chains are installed.
- Vehicles with level control: if snow chains are installed, only drive at raised vehicle level (/ page 291).
- Vehicles with rear-axle steering: if snow chains are installed, only drive with snow chain mode active (/ page 445).
- You can deactivate ESP® to pull away(/ page 257).
- This allows the wheels to spin, achieving an increased driving force.
Activating or deactivating snow chain mode
Multimedia system:
Home > Setting > Car
- Activate or deactivate Snow Chain Mode.
- When the function is active, the vehicle behaves as if snow chains were installed. For example, the maximum steering movement of the rear wheels is limited and the turning circle is thus increased. Additionally, parts of the driving and driving safety systems are not available when snow chain mode is active.
Mercedes-Benz 2023 Top Accessories
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Reference Links
View Full User Guide: Mercedes-Benz S-CLASS SEDAN 2023 User Manual
Download Manuals: https://www.mbusa.com/en/owners/manuals
