approved in accordance with the
Mercedes-Benz Specifications for Service
Products at any Mercedes-Benz Service
center.
Damage to the engine or exhaust system is
caused by the following:
R
using engine oils and oil filters that have
not been specifically approved for the
service system
R
replacing engine oil and oil filters after
the interval for replacement specified by
the service system has been exceeded
R
using engine oil additives.
!
Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic
converter. Have excess oil siphoned off.
Example: engine oil cap
X
Turn cap
:
counter-clockwise and remove
it.
X
Add engine oil.
If the oil level is at or below the MIN mark
on the oil dipstick, add 1.1 US qt (1.0 l) of
engine oil.
X
Replace cap
:
on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X
Check the oil level again with the oil
dipstick (
Y
page 303).
Further information on engine oil
(
Y
page 371).
Checking and adding other service
products
Checking coolant level
G
WARNING
Certain components in the engine
compartment, 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,
particularly 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.
X
Turn the SmartKey to position 2 in the
ignition lock (
Y
page 145).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
Y
page 145).
X
Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
304
Engine compartment
Ma
int
enan
ce
and
car
e
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