2 4 0 Ch e ck ing and filling
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 204 Engine compartment: cover on the coo lant
expa nsion tank
Before you check anything in the engine com-
partment,
always read and hee d all WARN-
INGS o .A in Working in the engine compart-
ment on page 231 .
Park your vehicle on a level surface.
• Switch
off the ignition .
• Read the engine coolant level from the cool-
ant expansion tank
o fig. 204, o page 233.
With a cold engine, the coolant level should
be betwee n 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 o page 233 .
To obtain an accurate read ing, 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
o page 16 will
illuminate until you add coolant and the level
has been restored to normal. Even though
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 leak in the cooling
system. In the event of coolant loss, the cool-
ing system shou ld be inspected immediately
by your authorized Audi dea ler. It is not
enough mere ly to add coolant .
In a
sea led system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
A WARNING
-
The cooling system is under 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 flu id 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 condi-
tions, the ethylene glycol in engine cool-
ant can catch fire.
0 Note
Do not add any type of radiator leak seal-
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,
alw ays read and hee d all WARN-
INGS o .A in Working in the engine compart-
ment on page 231.
• Turnoff the engi ne.
• Let the eng ine cool down.
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