Assyst Plus - Mercedes-Benz S-Class Coupe Operator's Manual

ASSYST PLUS

278
Example: checking the coolant level
Park the vehicle on a level surface.
X
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 ignition
X
lock ( page 121).
Y
or
On vehicles with KEYLESS-GO, press the
X
Start/Stop button twice (
Check the coolant temperature display in the
X
instrument cluster (
The coolant temperature must be below
158 ‡ (70 †).
Turn the SmartKey to position 0 in the ignition
X
lock ( page 121).
Y
or
Press the Start/Stop button once on vehicles
X
with KEYLESS-GO (
Slowly turn cap : counter-clockwise and to
X
relieve excess pressure.
Turn cap : further counter-clockwise and
X
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 ;.
If necessary, add coolant that has been tested
X
and approved by Mercedes-Benz.
Replace cap : and turn it clockwise as far as
X
it will go.
For further information on coolant, see
( page 333).
Y
page 121).
Y
page 187).
Y
page 121).
Y
Adding washer fluid to the windshield
washer system
G
WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
Example: adding fluid to the windshield
washer system
To open: pull cap : upwards by the tab.
X
Place cap : on the edge of the filler neck and
X
engage in place.
Add the premixed washer fluid.
X
To close: press cap : onto the filler neck
X
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 (
Further information on washer fluid
( page 334).
Y
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
page 230).
Y