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180 Maintenance and care
& WARNING Risk of burns from hot com‐
ponent parts in the engine compartment
Certain component parts in the engine com‐
partment 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.
* NOTE Damage caused by refilling too
much engine oil
Too much engine oil can damage the engine
or the catalytic converter.
Have excess engine oil removed at a
#
qualified specialist workshop.
* NOTE Engine damage due to use of addi‐
tives in the engine oil
The use of additional additives in the engine
oil can damage the engine.
Do not use any additional additives in
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the engine oil.
+
ENVIRONMENTAL NOTE Environmental
damage caused by spilling oil when refill‐
ing
Damage is caused to the environment if spil‐
led oil enters the soil.
When refilling oil, make sure none is
#
spilled.
Example: engine oil filler opening
Observe the information regarding approved
#
engine oil under "Operating fluids and capaci‐
ties" (
page 228).
/
Unscrew and remove cap 1.
#
Refill engine oil.
#
Place cap
1
on the filler opening and
#
tighten.
When doing so, make sure that the cap
engages correctly.
If present, check the oil level using the oil dip‐
#
stick (
page 179).
/
In the case of vehicles without an oil dipstick,
#
check the oil level with the on-board com‐
puter after the next journey (
It is necessary to run the engine for an extended
period after each oil refill to correctly detect the
oil level. Fill level changes during oil refills may
not be immediately visible. Depending on the
driving profile, the new oil level can only be dis‐
played after a driving time of up to 60 minutes.
If necessary, only refill the quantity of oil shown
in the instrument cluster display and check the
oil level again after the next journey.
Checking/adding coolant
& WARNING ‑ Risk of fire and injury from
antifreeze
If antifreeze comes into contact with hot com‐
ponent parts in the engine compartment, it
may ignite.
Allow the engine to cool down before
#
adding antifreeze.
Make sure that no antifreeze spills out
#
next to the filler opening.
Thoroughly clean off any antifreeze from
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component parts before starting the
vehicle.
& WARNING Risk of scalding from hot
coolant
If you open the cap, you could be scalded.
Let the motor cool down before opening
#
the cap.
When opening the cap, wear protective
#
gloves and safety glasses.
Open the cap slowly to release pres‐
#
sure.
page 178).
/
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