Topping up the windscreen washer system
WARNING Danger of burns when opening the bonnet
If you open the engine bonnet when the engine has overheated or during a fire in the engine compartment, you could come into contact with hot gases or other escaping operating fluids.
Before opening the bonnet, allow the engine to cool down.
In the event of a fire in the engine compartment, keep the engine bonnet closed and call the fire service.
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 injury due to moving parts
Components in the engine compartment may continue running or start up suddenly, even if the ignition is switched off.
Make sure of the following before performing tasks in the engine compartment:
Switch the ignition off.
Never reach into the danger zone 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 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.