Mercedes-Benz C-Class Coupe Operator's Manual page 277

Replace cap : on the filler neck and turn
X
clockwise.
Ensure that the cap locks into place
securely.
Check the oil level again with the oil dip-
X
stick ( page 273).
Y
Further information on engine oil
( page 345).
Y
Checking and adding other service
products
Checking coolant level
G WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
G WARNING
The engine cooling system is pressurized, par-
ticularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
Turn the SmartKey to position 2 in the igni-
X
tion lock ( page 133).
Y
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
Check the coolant temperature display in
X
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
X
X
X
X
For further information on coolant, see
(
Y
Adding washer fluid to the windshield
washer system/headlamp cleaning
system
G
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
page 134).
Y
touch only the components described in the
following.
Engine compartment
Slowly turn cap : half a turn counter-
clockwise and allow excess pressure to
escape.
Turn cap : further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar = in the fuel
filler neck when warm, there is enough
coolant in expansion tank ;.
If necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
Replace cap : and turn it clockwise as far
as it will go.
page 347).
WARNING
275
Z