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356 Maintenance and care
Open the cap slowly to release pres‐
#
sure.
Park the vehicle on a level surface.
#
Check the coolant temperature display in the
#
instrument cluster.
The coolant temperature must be below
70 °C.
Slowly turn cap
1
anti-clockwise to release
#
overpressure.
Continue turning cap
1
anti-clockwise and
#
remove it.
The coolant level is correct:
if the engine is cold, up to marker bar
R
if the engine is warm, up to 1.5 cm over
R
marker bar
2
If necessary, top up with coolant that has
#
been approved by Mercedes-Benz.
Further information on coolant (
R
Topping up the windscreen washer system
& WARNING Danger of burns from hot
component parts in the engine compart‐
ment
Certain component parts in the engine com‐
partment may be very hot, e.g. the engine,
the radiator and parts of the exhaust system.
Let the engine cool down and only
#
touch the component parts described
below:
& WARNING Danger of burns when open‐
ing the bonnet
2
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.
page 418)
→
Before opening the bonnet, allow the
#
engine to cool down.
In the event of a fire in the engine com‐
#
partment, keep the engine bonnet
closed and call the fire service.
& 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.
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