Mercedes-Benz GL-Class 2007 Owners Manual - Manual (Page 384)

383
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” (
୴ page 565).
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 gauge indi-
cates 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 un-
der pressure.
ț 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.