Mercedes Benz 2007 sl 550 ユーザーズマニュアル

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

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Using a rag, slowly turn the cap approx-
imately one half turn counterclockwise 
to release any excess pressure.

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Continue turning the cap counterclock-
wise and remove it.

The coolant level is correct if the level 

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for cold coolant: is up to the upper 
mark on the bracing rib of the coolant 
expansion tank (translucent)

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for warm coolant: is approx. 0.6 in 
(1.5 cm) higher

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Add coolant as required.

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Replace and tighten cap. 

For more information, see “Coolants” 
(

G

In order to avoid any possibly serious burns:

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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.

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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.

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Using a rag, slowly open the cap approx-
imately 

1

/

2

 turn to relieve excess pres-

sure. If opened immediately, scalding 
hot fluid and steam will be blown out un-
der pressure.

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Do not spill antifreeze on hot engine 
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.

!

1. Never open the