Washer System - Mercedes-Benz S-Class Coupe Operator's Manual

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.
Park the vehicle on a level surface.
X
Only check the coolant level when the vehi-
cle is on a level surface and the engine has
cooled down.
Turn the SmartKey to position 2 in the igni-
X
tion lock ( page 151).
Y
or
Press Start/Stop button twice
X
( page 151).
Y
Check the coolant temperature display in
X
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
Turn the SmartKey to position
X
0 ( page 151) in the ignition lock.
Y
or
Remove Start/Stop button from ignition
X
lock ( page 151).
Y
Slowly turn cap : half a turn counter-
X
clockwise and allow excess pressure to
escape.
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 ;.
Engine compartment
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 expansion tank ;.
If necessary, add coolant that has been tes-
X
ted and approved by Mercedes-Benz.
Replace cap : and turn it clockwise as far
X
as it will go.
For further information on coolant, see
( page 404).
Y
Adding washer fluid to the windshield

washer system

G WARNING
Certain components in the engine compart-
ment, 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
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.
To open: pull cap : upwards by the tab.
X
Place cap : on the edge of the filler neck
X
and engage in place.
329
Z