MAINTENANCE AND SERVICE
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347
Measuring the oil level
If the oil level needs to be checked then it should
be carried out in accordance with the following
sequence.
1. Activate key position II; see Key positions -
functions at different levels (p. 81).
2. Rotate the thumbwheel on the left-hand
stalk switch to position Oil level.
> You will then see information displayed
about the engine oil level.
For more information on menu navigation,
see Menu navigation - combined instru-
ment panel (p. 110).
NOTE
If the right conditions for measuring the oil
level (time after engine shutdown, the car's
inclination, outside temperature, etc.) are not
met, the message Not available will be
shown. This does not mean that there is
something wrong in the car's systems.
Related information
•Engine oil - general (p. 344)
•Key positions - functions at different levels
(p. 81)
Coolant - level
The coolant cools the internal combustion
engine to the correct operating temperature. The
heat that is transferred from the engine to the
coolant can be used to heat the passenger com-
partment.
Checking the level
The coolant level must lie between the MIN and
MAX marks on the expansion tank. If the cooling
system is not filled sufficiently, excessively high
temperatures could occur, causing a risk of dam-
age to the engine.
NOTE
Check the coolant level regularly when the
engine is cold.
Filling
When topping up the coolant, follow the instruc-
tions on the packaging. Never top up with water
only. The risk of freezing increases with both too
little and too much coolant concentrate.
If there is coolant under the car, if there is cool-
ant smoke, or if more than 2 litres have been
filled, always call for recovery to avoid the risk of
engine damage when starting due to a defective
cooling system.
WARNING
Coolant can be very hot. If the coolant
requires topping up when the engine is at
operating temperature, unscrew the expan-
sion tank cap slowly to gently release the
overpressure.
