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222
Ch e ck ing and filling
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 expansion tank
can be seen in the engine compartment illus-
tration
c:>
page 216.
To obtain an accurate reading, the engine
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 c:> p age 17will
blink until you add coolant and the level has
been restored to norma l. Even though there is
an electric coolant level sensor, we still rec-
ommend you check the coolant level from
time to time.
Coolant loss
Coolant loss may indicate a leak in t he 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 sea led system, losses can occur only if
the boiling point of t he 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
the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag .
- Turn the cap slowly and very carefully in
a counter-clockwise direction while ap-
plying light, downward pressure on the
top of the cap .
- To avoid be ing burned, do not spill ant i-
freeze or coolant on the exhaust system
'
or hot engine parts. Under certa in cond i-
tions, the ethylene glycol in engine cool-
ant can catch fire.
(D
Note
Do not add any type of radiator leak sea l-
ant to your vehicle's engine coolant. Add-
ing radiator repa ir fluid may adverse ly af-
fect the funct ion and performance of your
cooling system and could result in damage
not covered by your New Vehicle Limited
Warranty .
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the eng ine com-
partment, always read and heed all WARN-
INGS
c:>
A
in Working in the engine compart-
ment on page 214 .
Requirement: There must be a residual
amount of coolant in the expans ion tank
c:> (]) .
.,.. Turn
off
the eng ine.
.,.. Let the engin e cool down.
.,.. Place a thick rag over the coolant expansion
tank
c:>
page 221 , fig. 185 and carefully turn
the cap counter-clockwise
c:>
.&_ .
.,.. Add coolant mixed in the correct rat io
c:>
page 221, Coolant up to the MAX mark-
ing.
.,.. Make sure t hat t he fluid level remains sta-
ble. Add more coolant if necessary.
.,.. Twist the cap on again tightly .
Replacement engine coolant must confo rm t o
exact spec ificat ions
c:>
page 221, Coolant.
We recommend using only coolant add it ive
G12++, G13 or in an emergency G12+. Do not
use a different add it ive. In an emergen cy use
plain wat er until you can get the correct addi-
tive and can restore t he correct ratio. This
sho uld be done as soon as possib le.
If you have lost a considerab le amount of
coolant, the n you sho uld add cold ant ifree ze
and cold wate r on ly when the engine is cold.
Always use new engine coolant when refilling . .,.
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