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.,. Park your vehicle on a level surface .
.,. Turn
off
the ignition.
.,. Read the engine coolant level from the coolant
expansion tank
c>
fig . 200,
c>
page 222,
fig. 197. With a cold engine, the coolant level
should be between the "MIN" and "MAX" mark-
ings . When the engine is warm, the level may
be slight ly above the
"MAX "
marking .
The location of the coolant expans ion tank can be
seen in the engine compartment illustrat ion
i=> page 222.
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:>
page 29 will
blink until you add coolant and the level has been
restored to normal. Even though there is an elec-
tr ic coolant level sensor, we still recommend you
check the coolant level from time to time.
Coolant loss
Coolant loss may indicate a
leak
in the cooling
syst em. In the event of coolant loss, the cooling
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 re-
sult of overheat ing.
(D
Note
Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Adding radia-
tor repair fluid may adversely affect the func-
tion 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 compart-
ment,
always read and heed all WARNINGS
Checking
and Filling
c>
.&.
in Working in the engine compartment on
page 220 .
Requirement: There must be a residual amount
of coolant in th e expans ion tank
c>@.
.,. Turn
off
the engine .
.,. Let the eng ine cool down.
.,. Place a thick rag over the coolant expa nsion
ta nk
c:>
page 226 , fig . 200 and carefully turn
the cap counter -clockwise
c>
_&. .
.,. Add coolant mixed in the correct ratio
c:>
page 226, Coolant up to the MAX marking .
.,. Make sure that the fluid level remains stab le.
Add more coolant if necessary .
.,. Twist the cap on again tightly.
Replacement engine coolant must conform to ex-
act specifications
c:>
page 226, Coolan t.
We recommend using only coolant addit ive
Gl2 +
+, Gl3
or in an emergency
Gl2+.
Do not use a
different additive . In an emergency use plain wa-
ter until you can get the correct addit ive and can
restore the correct ratio. This should be done as
soon as possible.
If you have lost a considerable amount of cool-
ant, then you shou ld add cold antifreeze and cold
water only whe n the engine is cold.
Always use new engine coolant when refilling.
Do not fill coolant above the "MAX " mark. Excess
coolant will be forced out through th e pressure
relief valve in the cap when the engine becomes
hot.
A
WARNING
-
- The cooling system is under pressure and
can get very hot. Reduce the risk of scalding
from hot coolant by following these steps .
- Turn
off
the eng ine an d 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 applying
light, downward pressure on t he top of
the cap.
~
227
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