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Before you check anything in the engine com-
partment,
always read and heed all WARN-
INGS
r=;,
A
in Working in the engine compart-
ment on page 222.
.. Park your vehicle on a level surface.
.. Switch
off
the ignition.
.. Read the eng ine coolant level from the cool-
ant expansion tank ¢ fig. 191, ¢ page 224,
fig. 188. With a cold engine, the coolant
level should be between the "min" and
"max" markings. When the engine is warm,
the level may be slightly above the "max"
marking.
The location of the coolant expans ion tank
can be seen in the engine compartment illus-
tration ¢ page 224.
To obta in an accurate read ing, the eng ine
must be switched
off .
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System
¢
page 16 will
illuminate until you add coolant and the level
has been restored to normal. Even thoug h
there is an electric coolant level sensor, we
still recommend you check the coolant level
from time to time .
Coolant loss
Coolant loss may indicate a
lea k
in the cooling
system. In the event of coolant loss, the cool-
ing system should be inspected immediately
by your authorized Audi dealer . It is not
enough merely to add coolant.
In a
sealed
system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheat ing.
A
WARNING
The cooling system is unde r pressure and
can get very hot . Reduce the risk of scald-
ing from hot coolant by following these
steps .
- Turn
off
t he engine and allow it t o cool
down.
Checkin g and fillin g
229
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise direct ion while ap-
plying light , downward pressure on the
top of the cap .
- To avoid being burned, do not sp ill anti-
freeze or coolant on the exhaust system
or hot engine parts. Under certa in cond i-
tions, th e ethylene glycol in engine cool-
ant can catch fire.
(D
Note
Do not add any type of radiator leak sea l-
ant t o your vehicle's engine coolant. Add-
ing radiator repa ir fluid may adverse ly af-
fect t he funct ion and performa nce of your
cooling system and could result in damage
not covered by your New Vehicle Limit ed
Warranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the eng ine com-
partment,
alway s read and heed all WARN-
INGS ¢
A
in Working in the engine compar t -
ment on page 222.
.. Requirement: There must be a residua l
amount of coolant in the expansion ta nk
¢ (D.
.. Turn
off
t he engine.
.. Let the engine cool down.
.. Place a thick rag over t he coolant expansion
tank ¢ page 228, fig. 191 and
carefully
twist the cap counte r-clockwise ¢ .&,.
.. Add coolant mixed in the correct rat io
¢ page 228, Coolant up to the MAX mark-
ing .
.. Make sure that the fluid level remains sta-
ble. Add more coolant if necessary.
.. Twist the cap on aga in tightly.
Replacement engine coolant must confo rm to
exact spec ificat ions r=;, page 228, Coolant.
..,.
•
•
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