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Checking coolant level
Checking the coolant level (example)
X
Park the vehicle on a level surface.
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 igni-
tion lock (Y page 131).
or
X
Press the Start/Stop button twice on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 132).
X
Check the coolant temperature display in the
instrument cluster (Y page 36).
The coolant temperature must be below
158 ‡ (70 †).
X
Turn the SmartKey to position g in the igni-
tion lock (Y page 131).
or
X
Press the Start/Stop button once on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 132).
X
Slowly turn cap : half a turn counter-clock-
wise 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 ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar = in the filler neck
when warm, there is enough coolant in expan-
sion tank ;.
X
If necessary, add coolant that has been tested
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 361).
Adding washer fluid to the windshield
washer system
G
WARNING
Windshield washer concentrate is highly flam-
mable. If windshield washer concentrate gets
onto hot components of the engine or the
exhaust system, it can ignite. There is a risk of
fire and injury.
Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
Example: adding liquid to the windshield
washer system
X
To open: pull cap : up by the tab and open.
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 recom-
mended minimum fluid level of 1.1 US qt (1.0 l),
a message appears in the multifunction display
prompting you to add washer fluid (Y page 255).
Further information on washer fluid
(Y page 362).
ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date.
Information on the type of service and service
intervals (see the separate Maintenance Book-
let).
Further information can be obtained at a quali-
fied specialist workshop, e.g. an authorized
ASSYST PLUS
303
Maintenance and care
Z
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