Notes on regularly inspecting wheels and tyres
WARNING Risk of injury due to damaged tyres
Damaged tyres can cause tyre pressure loss.
Check the tyres regularly for signs of damage and replace any damaged tyres immediately.
WARNING Risk of aquaplaning due to insufficient tyre tread
Insufficient tyre tread will result in reduced tyre grip.
The risk of aquaplaning is increased on wet roads, especially when the speed of the vehicle 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 tyres.
Minimum tread depth for:
Summer tyres: 3 mm
M+S tyres: 4 mm
For safety reasons, replace the tyres 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 tyre pressure More.
Visually inspect wheels and tyres for damage.
Check the valve caps.
Visual check of the tyre tread depth and the tyre contact surface across the entire width.
The minimum tread depth for summer tyres is 3 mm and for winter tyres 4 mm.
Setting the speed limitation for winter tyres
Multimedia system:
Select a speed or deactivate the function.
Notes on snow chains
NOTE Damage to components of the vehicle body or chassis due to fitted snow chains
If you fit snow chains to the front wheels of 4MATIC vehicles, you may damage components of the vehicle body or chassis.
Only fit snow chains to the rear wheels of 4MATIC vehicles.
Observe the following notes when using snow chains:
Snow chains are only permissible for certain wheel/tyre combinations. You can obtain information about this from a Mercedes-Benz Service Centre.
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.
If snow chains are fitted, the maximum permissible speed is 50 km/h.
Vehicles with Active Parking Assist: do not use Active Parking Assist when snow chains are fitted.
You can permanently limit the maximum vehicle speed for driving with winter tyres More.
You can deactivate ESP® to pull away More. This allows the wheels to spin, achieving an increased driving force.
Notes on windscreen washer fluid
Observe the notes on operating fluids More.
WARNING Risk of fire and injury from windscreen washer concentrate
Windscreen washer concentrate is highly flammable. If it comes into contact with hot components, it may ignite.
Make sure that windscreen washer concentrate is not spilled near to the filler opening.
NOTE Damage to the exterior lighting due to unsuitable windscreen washer fluid
Unsuitable windscreen washer fluids may damage the plastic surface of the exterior lighting.
Only use windscreen washer fluids which are also suitable for use on plastic surfaces, e.g. MB SummerFit or MB WinterFit.
NOTEBlocked spray nozzles caused by mixing windscreen washer fluids
Do not mix MB SummerFit and MB WinterFit with other windscreen washer fluids.
Do not use distilled or de-ionised water. Otherwise, the fill level sensor may be triggered erroneously.
Recommended windscreen washer fluid:
above freezing point: e.g. MB SummerFit
below freezing point: e.g. MB WinterFit
For the correct mixing ratio, refer to the information on the antifreeze container.
Mix washer fluid with windscreen washer fluid all year round.
Topping up the windscreen washer system
WARNING Risk of injury due to drive system overheating
If you open the bonnet in the event of an overheated drive system or fire in the engine compartment, the following situations may occur:
You may come into contact with hot gases.
You may come into contact with other escaping hot operating fluids.
In the event of overheating or a fire in the engine compartment, keep the bonnet closed and call the fire service.
Allow the overheated drive system to cool down if the engine must be opened.
WARNING Risk of injury due to moving parts
Components in the engine compartment can continue to run or start unexpectedly even when the drive system is switched off.
Observe the following if the bonnet must be opened:
Switch off the drive system.
Never touch the danger zone surrounding moving component parts, e.g. the rotation area of the fan.
Remove jewellery and watches.
Keep items of clothing and hair away from moving parts.
WARNING Risk of burns from hot components in the engine compartment
Certain components in the engine compartment may be very hot, e.g. drive system and cooler.
Allow the drive system to cool down and touch only the components described below.
WARNING Risk of fire and injury from windscreen washer concentrate
Windscreen washer concentrate is highly flammable.
Avoid fire, naked flames, smoking and the creation of sparks when using windscreen washer concentrate.
Remove cap 
by the tab.
by the tab. Top up the washer fluid.
Replacing the windscreen wiper blades
WARNING Risk of becoming trapped if the windscreen wipers are switched on while wiper blades are being replaced
If the windscreen wipers begin to move while you are changing the wiper blades, you can be trapped by the wiper arm.
Always switch off the windscreen wipers and ignition before changing the wiper blades.
Moving the wiper arms into the replacement position
Switch the ignition on and then off again immediately.
Within around 15 seconds, press and hold the 
button on the combination switch for approximately three seconds More.
button on the combination switch for approximately three seconds More. The wiper arms will move into the replacement position.
Replacing the windscreen wiper blades
Observe the information about the maintenance display.
Maintenance display
Remove protective film from the maintenance display on the tip of the newly fitted wiper blades.
from the maintenance display on the tip of the newly fitted wiper blades. When the colour of the maintenance display changes from black to yellow, the wiper blades should be replaced.
The duration until the colour changes varies depending on the usage conditions.