Mercedes-Benz 2009 CL-Class Operator's Manual page 430

Operation
Engine compartment
scalding hot fluid and steam will be blown
out under pressure.
Do not spill antifreeze on hot engine
R
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
contact with hot engine parts.
CL 550 4MATIC (example illustration)
Cap
1
Coolant expansion tank
2
Marking bar in the expansion tank
3
X
Using a rag, turn cap slowly
1
1
approximately / turn counterclockwise
2
to release any excess pressure.
X
Continue turning cap counterclockwise
1
and remove it.
428
The coolant level is correct if the level
for cold coolant: reaches marking bar
R
in coolant expansion tank
3
for warm coolant: is approximately 0.6 in
R
(1.5 cm) higher
X
Add coolant as required.
X
Replace and tighten cap 1.
For more information on coolant, see the
"Technical data" section ( Y page 578) and
( Y page 582).
Washer system and headlamp
cleaning system
G Warning!
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it
may ignite and burn. You could be seriously
burned.
! Always use washer solvent/antifreeze
where temperatures may fall below
freezing point. Failure to do so could result
in damage to the washer system/fluid
reservoir.
! Only use washer fluid which is suitable for
plastic lenses. Improper washer fluid can
damage the plastic lenses of the
2
headlamps.
! Do not use distilled or deionized water in
the washer fluid reservoir. Otherwise, the
washer fluid level sensor could be
damaged.
Cap for washer fluid reservoir
1
Fluid for the washer system and the headlamp
cleaning system is supplied from the washer
fluid reservoir.
During all seasons, add MB Windshield
Washer Concentrate "MB SummerFit" to
water. Premix the washer fluid in a suitable
container.