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190
Chec k ing and filling
Before you check anything in the engine com-
partment, always read and heed all WARN-
INGS
¢
A
in Working in the engine
comportment on page 182.
• Park your vehicle so that it is horizontally
level.
• Switch the ignition off.
• Read the coolant level at the coolant expan-
sion tank ¢
fig. 145.
With a cold engine, it
must be above the "min" mark . With a hot
engine , it can be a little above the indicated
range.
The location of the coolant expansion tank
can be seen in the engine compartment
illus -
tration .
To obtain an accurate read ing, the engine
must be switched off.
The expansion tank in your vehicle is equipped
with an e lectric coolant level senso r.
When the coolant level is too low, the warning
light in the Auto-Check System ¢
page 17
will
blink until you add coolant and the level has
been restored to norma l. Even though there is
an electric coolant level sensor, we still rec-
ommend you check the coolant leve l from
time to time .
Coolant loss
Coolant loss may indicate a lea k in the coo ling
system. In the event of coolant loss, the cool-
ing sys t em should be inspected immediately
by your author ized Audi dealer . It is not
enough merely to add coola nt .
In a sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheat ing .
@
Note
Do not add any type of radiator leak seal-
ant to your vehicle's eng ine coolant. Add-
ing radiator repair fluid may adversely af-
fect the function and performance of your
coo ling system and could res ult in damage
not covered by your New Vehicle Limited
Warr a nty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the engine com-
partment, always read and heed all WARN-
INGS
¢
A
in Working in the engine comport-
ment on page 182 .
• Turn off the engine.
• Let the engine cool down.
• Place a thick rag over t he coo lant expansion
tank
¢ page 189, fig. 145
a nd carefully
tw ist the cap counte r-clockwise ¢ &_ .
• Add coo la nt.
• Twist the cap on aga in
tightly.
Replacement engine coolant must conform to
exact spec ificat ions
¢
page 189, Coolant.
Even in a n emerge ncy, if coolant addi -
t ive G12++, G12 + or G12 is not ava ilable , do
not
use a d iffe ren t addit ive. Use plain water
instead unti l you can get the cor rect additive
and can restore the correct ratio . This sho uld
be done as soon as possible .
If
you have los t a considerab le amount of
coolant , then you sho uld add cold ant ifreeze
and cold wate r on ly w hen the engine is cold.
Always use
new
engine coo la nt whe n refilling .
Do not fill coola nt above the "MAX" mark . Ex-
cess coola nt will be fo rced out through the
pressure relief valve in t he cap when the en-
gine becomes hot.
,&.
WARNING
~
-
- The cooling system is under pressure and
can get very hot. Reduce the risk of
scalding from hot coolant by followi ng
these steps.
- Turn off the engine and allow it to coo l
down.
- Protect yo ur face, hands and arms from
escaping fluid and steam by covering
the cap with a large, t hick rag.
- Turn the cap s lowly a nd ve ry carefully
in a counter-clo ckwise direction while
applying light, downward pres sure on
the top of the cap.
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