Additional service products
Important safety notes
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
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
is a risk of injury.
If you need to do any work inside the engine
compartment:
R
switch off the ignition
R
never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
R
remove jewelry and watches
R
keep items of clothing and hair, for exam-
ple, away from moving parts
G
WARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
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 122).
or
X
Press the Start/Stop button twice on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (
Y
page 123).
X
Check the coolant temperature display in the
instrument cluster (
Y
page 35).
The coolant temperature must be below
158 ‡ (70 †).
X
Turn the SmartKey to position
g
in the igni-
tion lock (
Y
page 122).
or
X
Press the Start/Stop button once on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (
Y
page 123).
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
;
.
280
Engine compartment
Maintenance
and
ca
re
Summary of Contents for C-CLASS CABRIOLET
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