Mercedes-Benz 2007 C 230, Operator'S Manual

Page: 279 / 441

278
Operation
Engine compartment
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1
Coolant expansion tank
2
Cap
왘
Using a rag, turn cap
2
slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
왘
Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level
앫
for cold coolant: reaches the black
top part of the reservoir
앫
for warm coolant: is approx. 0.6 in
(1.5 cm) higher
왘
Add coolant as required.
왘
Replace and tighten cap.
For more information on coolant, see
“Coolants” (
컄
page 416).
Warning!
G
In order to avoid any potentially serious
burns:
앫
Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.
앫
Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.
앫
Using a rag, slowly open the cap
approximately
1
/
2
turn to relieve excess
pressure. If opened immediately, scald-
ing hot fluid and steam will be blown out
under pressure.
앫
Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
contact with hot engine parts.