Coolant Level - Mercedes-Benz 2007 CLS 550 Operator's Manual

2007 cls-class
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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 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.
290
Using a rag, slowly open the cap approx-
1
imately
/
turn to relieve excess pres-
2
sure. If opened immediately, scalding
hot fluid and steam will be blown out
under pressure.
Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
G
tact with hot engine parts.
The coolant expansion tank is located on
the driver's side of the engine compart-
ment.
1 Marking bar in the expansion tank
2 Cap
3 Coolant expansion tank
Using a rag, turn cap 2 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
Continue turning the cap 2 counter-
clockwise and remove it.
The coolant level is correct if the level:
for cold coolant: reaches marking
bar 1 in the expansion tank 3
for warm coolant: is approximately
0.6 in (1.5 cm) higher
Add coolant as required.
Replace and tighten cap 2.
For more information on coolant, see the
"Technical data" section ( page 453).

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2007 cls 63 amg2007 cls-classCls 550Cls 63 amg

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