X
Park the vehicle on a level surface.
Check the coolant level only if the vehicle is
on a level surface and the engine has cooled
down.
X
Turn the key to position
2
in the ignition lock
(
Y
page 144).
X
Check the coolant temperature display in the
instrument cluster.
The coolant temperature must be below
40 †.
X
Turn the key to position
g
in the ignition lock
(
Y
page 144).
X
Slowly turn cap
:
anti-clockwise and to
relieve excess pressure.
X
Turn cap
:
further anti-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, top up with coolant that has
been tested and approved by Mercedes-Benz.
X
Replace cap
:
and turn it clockwise as far as
it will go.
Further information on coolant (
Y
page 356).
Topping up the windscreen washer sys-
tem
G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri-
bed in the following.
G
WARNING
If windscreen washer concentrate comes into
contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler
neck.
X
To open: pull cap
:
upwards by the tab.
X
Top up with the premixed washer fluid.
X
To close: press cap
:
onto the filler neck
until it engages.
The windscreen washer system is supplied by
the washer fluid reservoir.
For vehicles, the recommended minimum
amount in the washer fluid reservoir is 1 litre.
If the washer fluid level drops below 1 litre, a
message appears in the multifunction display
prompting you to top up the washer fluid
(
Y
page 263).
Further information on windscreen washer
fluid/antifreeze (
Y
page 357).
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 service
and service intervals in the Service Booklet.
You can obtain further information from a
Mercedes-Benz Service Centre.
i
The ASSYST PLUS service interval display
does not show any information on the engine
306
ASSYST PLUS
Maintenance
and
care
