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Y
yellow (
page 162) or red (
window with the * symbol.
Only open the coolant expansion tank when the
coolant temperature is below 50 †.
The coolant level can only be accurately deter-
mined when the coolant temperature is
between 0 † and 25 †. First check the coolant
temperature using the on-board computer
Y
(
page 148).
If you need to top up coolant, add corrosion
inhibitor/antifreeze additive as specified in
Sheet No 325.5 to the water, e.g. Glysantin
®
G40
. Pay attention to the coolant mixture ratio
and the water quality (
the water and the antifreeze/anti-corrosion
additive together outside the coolant circuit,
then fill the coolant expansion tank with the
mixture.
X
Park the vehicle on a level surface.
X
Apply the parking brake.
X
Switch off the engine.
X
Vehicles with coolant expansion tank under
the maintenance flap: open the maintenance
Y
flap (
page 355).
X
Vehicles with coolant expansion tank behind
the cab: slide cover ? open.
i
For vehicles with the coolant expansion tank
behind the cab, ensure your footing is secure
when refilling the coolant.
X
Turn turquoise cap = slowly anti-clockwise
and release the pressure.
X
Unscrew and remove turquoise cap =.
X
Check coolant level.
The coolant in the expansion tank must reach
up to the edge of the filler neck.
X
Top coolant up to the edge of the filler neck.
X
Replace turquoise cap = and tighten it as far
as it will go.
X
Vehicles with coolant expansion tank under
the maintenance flap: close the maintenance
flap.
X
Vehicles with coolant expansion tank behind
the cab: slide cover ? closed.
Clutch actuation system
!
Never top up with a brake fluid or hydraulic
fluid of a different quality grade. You could
otherwise damage the hydraulic clutch actua-
tion system.
Y
page 178) event
®
Y
page 420). First, mix
!
The hydraulic system may be leaking if the
fluid level in the expansion tank of the hydrau-
lic clutch actuation system is below the min-
imum mark.
Have the hydraulic system checked at a quali-
fied specialist workshop.
Example: clutch actuation system reservoir
The hydraulic fluid for the clutch actuation sys-
tem must meet the specifications in Sheet No.
345.0 of the Mercedes-Benz Specifications for
Service Products.
It is not necessary to renew the hydraulic fluid in
the hydraulic clutch actuation system.
X
Open the maintenance flap (
X
Check the fluid level in the expansion tank.
The fluid level must be between maximum
mark ; and minimum mark :.
X
Close the maintenance flap.
Windscreen washer system/head-
lamp cleaning system
Topping up the washer fluid
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.
Maintenance
Y
page 355).
Z
357
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