Maintenance; Service Message; Assyst Plus - Mercedes-Benz CLS Operator's Manual

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
X
ignition lock ( page 147).
Y
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
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 147) in the ignition lock.
Y
Slowly turn cap : half a turn counter-
X
clockwise to 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 ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar = in the fuel
filler neck when warm, there is enough
coolant in expansion tank ;.
If necessary, add coolant that has been
X
tested 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 377).
Y
Adding washer fluid to the windshield
washer system/headlamp cleaning
system
G
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust system it
could ignite. There is a risk of fire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck.
page 147).
Y
X
X
X
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
If the washer fluid level drops below the
recommended minimum of 1 liter, a message
appears in the multifunction display
prompting you to refill the washer fluid
(
Y
Further information on windshield washer
fluid/antifreeze (

Maintenance

ASSYST PLUS

Service messages
The ASSYST PLUS service interval display
informs you of the next service due date.
WARNING
To open: pull cap : upwards by the tab.
Add the premixed washer fluid.
To close: press cap : onto the filler neck
until it engages.
page 262).
page 378).
Y
Maintenance
309
Z