Coolant Level - Mercedes-Benz 2007 C 230 Operator's Manual

2007 c-class sedan
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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.
Warning!
In order to avoid any potentially serious
burns:
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.
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.
278
Using a rag, slowly open the cap
1
approximately
pressure. If opened immediately, scald-
ing hot fluid and steam will be blown out
under pressure.
Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
G
contact with hot engine parts.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1 Coolant expansion tank
2 Cap
/
turn to relieve excess
2
For more information on coolant, see
"Coolants" ( page 416).
Using a rag, turn cap 2 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level
for cold coolant: reaches the black
top part of the reservoir
for warm coolant: is approx. 0.6 in
(1.5 cm) higher
Add coolant as required.
Replace and tighten cap.

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