Operation Manual

X
Park the vehicle on a level surface.
Only check the coolant level when the vehi-
cle is on a level surface and the drive sys-
tem has cooled down.
X
Turn the SmartKey to position 2 in the igni-
tion lock (Y page 131).
X
Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
104 ‡ (40 †).
X
Turn the SmartKey to position 0 in the igni-
tion lock (Y page 131).
X
Slowly turn cap : half a turn counter-
clockwise and allow excess pressure to
escape.
X
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 ;.
X
If necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
X
Replace cap : and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 332).
Windshield washer system
G
WARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and
only touch the components described in the
following.
G
WARNING
Windshield washer concentrate is highly flam-
mable. If it comes into contact with hot com-
ponents in the front compartment, it may
ignite. There is a risk of fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
Example
X
To open: pull cap : upwards by the tab.
X
Add the premixed washer fluid.
X
To close: press cap : onto the filler neck
until it engages.
If the washer fluid level drops below the rec-
ommended minimum of 1 liter, a message
appears in the multifunction display prompt-
ing you to add washer fluid (Y page 225).
Further information on windshield washer
fluid/antifreeze (Y page 333).
ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date.
You can find information on the type of ser-
vice and service intervals in the Maintenance
Booklet.
270
ASSYST PLUS
Maintenance and care