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Before you check anything in the engine com-
partment,
always read and heed all WARN-
INGS
¢
A
in Working in the engine compart-
ment on page 207.
The "MIN" und "MAX" mar kings are found on
the bi-level disc in the interior of the coolant
expansion tank ¢ fig . 181.
.,. Park your vehi cle on a level sur face.
.,. Turn off the ignition .
.,. Let the engine coo l down .
.,. Place a thick rag over the coolant expansion
tank and carefully turn the cap counter -
clockwise ¢
.&,.
.,. Read the engin e coolant leve l inside the
coolant expans ion tank ¢ fig. 180,
¢ page 209, fig . 177. With a cold engine,
the coolant leve l should be between the
"MIN" and "MAX" ma rkings ¢ fig. 181
-arrows- . When the eng ine is warm, the lev-
el may be slightly above the "MAX" mark ing.
.,. The MAX marking may be covered wit h a
maximum of 1 mm of coolant when yo u fill
coolant .
.,. Twist the cap on again tightly.
The location of the coolant expansion tank
can be seen in the engine compartment
illus-
tration ¢ page 209.
To obtain an accurate read ing, the engine
must be switched off.
The expans ion t ank in you r vehicle is equipped
with an elec t ric coolant level sensor .
When the coo lant level is too low, the warning
light in the Auto-Check Syst em¢ page 18 wi ll
blink until you add coo la nt and t he level has
been restored to norma l. Even though there is
an e lectric coolant level sensor, we sti ll rec-
ommend you check the coolant leve l from
time to time.
Coolant loss
Coolan t loss may indicate a leak in the coo ling
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.
Checkin g and fillin g
215
In a sealed system, losses can occur on ly if
the boiling point of the coo lant is exceeded as
a resu lt of overheating.
Adding coolant
Rep lacement engine coo lant must confo rm t o
exact spec ificat ions¢ page 214, Coolant .
We recommend using only coo lant add itive
Gl2++, Gl3 or in an emergency Gl 2+. Do not
use a different add itive. In an emergen cy use
plain water until you can ge t the correct addi-
tive and can restore the correct ra t io. This
sho uld be done as soon as possib le .
If you have lost a cons iderab le amount of
coolant, then you sho uld add cold ant ifreeze
and co ld water on ly when the engine is cold.
Always use new engine coo la nt when refilling.
Do not fill coolant above the "MAX" mark. Ex-
cess coolant will be fo rced out through the
pressure relief valve in the cap when the en-
gine becomes hot.
_&
WARNING
- The cooling system is un der pressure and
can get very hot. Reduce t he risk of
scalding from hot coolant by following
these ste ps.
- Turn off the engine and allow it to coo l
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering
the cap w ith a large, th ick rag.
- Turn the cap s lowly and very carefully
in a counter-clockwise
direction while
applying light, downward pressure on
the top of the cap.
- To avoid being bu rned, do not spill an-
tifree ze or coolant o n the ex haust sys-
tem o r hot engine par ts. Under ce rt ain
con ditio ns, the ethy lene glycol in en-
gine coolant can catch fire.
- Antifreeze is poisonous. Always st ore a n-
tifreeze in its original container an d well
out of the reach of children .
Ill-
•
•
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