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Ch e ck ing and Filling
The location of the coolant expansion tank can be
seen in the engine compartment
illustration
¢ page 195.
To obtain an accura t e reading, the eng ine must
be switched off .
The expans io n tank in your vehicle is equipped
with a n e lec t ric coolant level sensor.
When the coolant level is too low, the war ning
light in the Auto-Check System¢ page 15 will
blin k until you add coo la nt and the level has bee n
restored to normal. Even t hough the re is a n e lec-
tr ic coolant level sensor, we still re commend you
check the coo lant level from time to time .
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cooling
system should be inspected immediately by your
author ized Audi dealer. It is not enough me rely
to add coolant.
In a se aled system, losses can occur only if the
boi ling point of the coo lant is exceeded as a re-
sul t of over heat ing.
A
WARNING
The cooling system is unde r pressure and can
get very hot . Red uce the risk of scalding from
hot coolant by following these steps.
- Turn off the eng ine and a llow it to cool
down .
- Protect your face, hands and arms from es -
caping fluid and steam by cove ring the ca p
with a la rge, thick rag.
- Turn the cap slowly and very ca refu lly in a
counter-clockwise
direction w hile ap plying
light, downwa rd pressure o n the top of the
cap.
- To avo id being burned, do not sp ill anti-
freeze or coolant on the exha ust system or
hot eng ine parts. Under certain conditions,
the ethy lene g lycol in e ngine coolant can
catch fire.
(D
Note
Do not add any type of radiato r leak sealant
to your veh icle's engine coolant. Adding radia-
200
tor repair fluid may adverse ly affect the func -
tion and performance of your coo ling system
and could result in damage not covered by
your New Vehicle Limited Warranty.
Adding coolant
Be very careful when adding engine coolant.
Befo re you check any t hing in the engine compart-
ment, always read and heed all WARNINGS
¢
A
in Working in the engine compartment on
page 193.
Requireme nt: The re mus t be a res idual amo unt
of coolant in the expans ion t ank ¢ (!) .
""Turn off t he engine .
""Let t he eng ine cool down.
"" Place a thick rag over t he coolan t expan sio n
tank ¢ page 199, fig. 163 and carefull y turn
the cap counter-clockwise
¢ ,&. .
""Add coo lant m ixed in the cor rect rat io
¢page 199, Coolant up to the MAX ma rking.
""Make sure that the fluid level remains stab le.
Add more coolant if necessa ry.
""Twist the cap o n aga in tightly.
Replacement eng ine coolant must conform to ex-
act specifications ¢ page 199, Coolant.
We recommend using only coo lant ad d itive G12+
+, G13 or in an emergency G12+. Do
not
use a
different additive. In an emergency use plain wa-
te r unt il you can get the cor rect addit ive and ca n
resto re the cor rect rat io. This should be done as
soon as possib le.
If you have lost a considerable amount of coo l-
an t , then you s hou ld add cold a ntifreeze and cold
water only whe n the engine is cold.
Always use new engine coo lant when ref illing.
Do no t f ill coolant above the "MAX" mark . Excess
coolant will be forced out th rough the pressure
relief valve in the cap when the engine becomes
hot.
~
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