Mercedes-Benz 2008 GL 450 Automobile User Manual


 
382
Operation
Engine compartment
The coolant expansion tank is located on
the driver’s side of the engine compart-
ment.
1 Cap
2 Coolant expansion tank
3 Indicator wall
4 Coolant level
̈ Using a rag, turn cap 1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
̈ Continue turning cap 1 counterclock-
wise and remove it.
Coolant level 4 is correct if the level:
ț for cold coolant: reaches the top of
indicator wall 3 visible through the
filling opening
ț for warm coolant: is approximately
0.6 in (1.5 cm) higher
̈ Add coolant as required.
̈ Replace and tighten cap 1.
For more information on coolant, see
“Coolants” (
page 567).
Warning! G
In order to avoid potentially serious burns:
ț 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 display
indicates that the coolant is overheated.
ț 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.
ț 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
under pressure.
ț Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
contact with hot engine parts.
164.boo Seite 382 Freitag, 30. März 2007 12:54 12