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Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 196
Engine compartment: cover on the coolant
expansion tank
Before you check anything in the engine com-
partment,
always read and heed all W ARN-
INGS ¢ .&. in Working in the engine compart-
ment on page 22
7.
.,. Park your vehicle on a level surface.
.,. Switch off the ignit ion.
.,. Read the engine coolant level from the cool-
ant expansion tank ¢
fig. 196,
¢
page 229 ,
fig. 193 .
With a cold engine, the coolant
level should be between the "min" and
"max" mar kings. When the engine is warm,
the leve l may be slightly above the "max"
marking.
The location of the coolant expansion tank
can be seen in the engine compartment
illus-
tration¢
page 229 .
To obta in an accurate read ing, the eng ine
must be switched off.
The expans ion tank in you r vehicle is equipped
with an electric coolant level sensor .
When the coolant level is too low, the warning
light in the Auto -Check System ¢
page 17
will
illum inate until you add coolant a nd the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolan t leve l
from time to time.
Coolant loss
Coolant loss may indicate a
leak
in the cool ing
system. In the event of coolant loss, the cool-
Checkin g and fillin g
235
ing system shou ld be inspected immediately
by your authorized Audi dealer . It is not
enough merely to add coolant .
In a
sealed
system, losses can occur on ly if
the boiling point of the coo lant 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 follow ing these
steps.
- Turn off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escap ing flu id and steam by cover ing the
cap with a la rge, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect 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 cond i-
tions, the ethylene glycol in engine coo l-
a nt can catch fire.
(D
Note
Do not add any type of radiator leak sea L -
ant to your veh icle's engine coo lant . Add-
ing radiato r repa ir fl uid may adverse ly af-
fect t he funct io n and performa nce of your
cooling system a nd could result in damage
not covered by your New Vehicle Limited
War ranty.
Adding coolant
Be very careful when adding engine coolant .
Befo re you che ck anyth ing in the eng ine com-
partmen t ,
alway s read and heed all WARN-
INGS ¢ .&_ in Working in the engine compart-
ment on page 227 .
.,. Turn off the engi ne.
.,. Let the engine cool down.
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