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 limit speed for winter tyres
Multimedia system:
Select a speed or deactivate the function.
Notes on snow chains
WARNING Risk of accident due to incorrectly fitted snow chains
If you have fitted snow chains to the rear wheels, they may drag against the vehicle body or chassis components.
Never fit snow chains on the rear wheels.
Only fit snow chains on the front wheels in pairs.
NOTE Damage to vehicle body or suspension components caused by fitted snow chains
On 4MATIC vehicles, if you fit snow chains on the rear wheels, you can damage vehicle body or suspension components.
On 4MATIC vehicles, only fit snow chains on the front wheels.
NOTEDamage to the wheel trim from fitted snow chains
If snow chains are fitted to steel wheels, the wheel trims can be damaged.
Remove the wheel trims of steel wheels before fitting snow chains.
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 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 due to windscreen washer concentrate
Windscreen washer concentrate is highly flammable. It could ignite if it comes into contact with hot engine component parts or the exhaust system.
Make sure that no windscreen washer concentrate spills out next 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 burns when opening the bonnet
If you open the bonnet in the event of an overheated engine 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.
Before opening the bonnet, allow the engine to cool down.
In the event of a fire in the engine compartment, keep the bonnet closed and call the fire service.
WARNING Risk of injury due to moving parts
Components in the engine compartment may continue to run or start unexpectedly even when the drive system is switched off.
Observe the following if you must open the bonnet:
Switch off the vehicle.
Never touch the danger zones surrounding moving components, 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 component parts in the engine compartment
Certain component parts in the engine compartment can be very hot, e.g. the engine, the cooler and parts of the exhaust system.
Allow the engine to cool down and only touch component parts described in the following.
WARNING ‑ Risk of fire and injury due to windscreen washer concentrate
Windscreen washer concentrate is highly flammable. It could ignite if it comes into contact with hot engine component parts or the exhaust system.
Make sure that no windscreen washer concentrate spills out next to the filler opening.
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 vehicle before changing the wiper blades.
Moving the wiper arms into the replacement position
Switch the vehicle 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
Check the condition of the wiper blades regularly and replace them in the event of visible damage or ongoing smearing.
Observe the information about the maintenance display.
Maintenance display
Remove protective film from the maintenance displays on the tips of the newly fitted wiper blades.
from the maintenance displays on the tips of the newly fitted wiper blades. When the colour of the maintenance displays changes from black to yellow, replace the wiper blades.
The duration until the colour changes varies depending on the usage conditions.
Switching the stationary heater/ventilation on/off via the operating unit
DANGER Risk of fatal injury due to poisonous exhaust gases
If the tailpipe is blocked or sufficient ventilation is not possible, poisonous exhaust gases such as carbon monoxide may enter the vehicle. This is the case in enclosed spaces or if the vehicle gets stuck in snow, for example.
Always switch the stationary heater off in enclosed spaces without an air extraction system, e.g. in garages.
Keep the tailpipe and the area around the vehicle free from snow when the vehicle or the stationary heater is running.
Open a window on the side of the vehicle facing away from the wind to ensure an adequate supply of fresh air.
WARNING Risk of fire due to hot stationary heater components and exhaust gases
Flammable materials such as leaves, grass or twigs may ignite.
When the stationary heater is switched on, make sure that:
hot vehicle parts do not come into contact with flammable materials.
the exhaust gas can flow out of the stationary heater exhaust pipe unhindered.
the exhaust gas does not come into contact with flammable materials.
NOTE Battery discharge caused by stationary heater or stationary ventilation operation
Operating the stationary heater or stationary ventilation drains the battery.
After heating or ventilating the vehicle twice, drive for a longer period of time.
Requirements:
The fuel tank is at least
full.
Set the desired temperature using the 
button.
button. Press button .
. The red or blue indicator lamp on button will light up or go out.
The colours of the indicator lamp have the following meanings:
Blue: stationary ventilation is switched on.
Red: the stationary heater is switched on.
Yellow: the departure time is preselected.
The stationary heater/ventilation will switch off automatically after 50 minutes.
Operation using the app: the stationary heater/ventilation can also be operated via the Mercedes me connect app. You can find further information in the separate Owner's Manual at Mercedes me connect Interactive Owner's Manual.