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If you must add coolant, use a mixture of wa-
ter and coolant additive. Mixing the coolant
addit ive with distilled water is recommended .
.&_
WARNING
Before you check anything in the engine
compartment,
always read and heed all
WARNINGS ¢ .&. in Working in the engine
compartment on page 256 .
(D
Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is suffic ient to meet the cli-
mate cond itions . This is especially impor-
tant if you live in a region where the w in-
te r is extremely cold. If necessary, in-
crease the proport ion of coolant additive
to 60% .
- When adding coolan t addi tive to you r
cooling system , remember:
- We recommend using only coolant ad-
ditive G12 ++ or G13 for your vehicle.
This coo lant additive is available at au-
thorized Audi dealers . Other types of
antifreeze can significantly reduce cor-
rosion protection . The resu lting corro-
sion can cause a loss of coo la nt and se-
rious engine damage.
- Do not add a ny type of radiator leak sea l-
ant to your veh icle's engine coo la nt.
Adding rad iator repair fluid may adverse -
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Vehicle
Limited Warranty.
-
Checkin g and fillin g
26 3
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 24 6
Engine compartm ent: Coolant expansion ta nk
Befo re you check anyth ing in the eng ine com -
partment,
always read and heed all WARN-
INGS
¢
A
in Working in the engine comport-
ment on page 256 .
.,.. Park your vehicle on a level su rface.
.,.. Turn off t he ignition .
.,.. Let the engine cool down.
.,.. Place a thick rag over the coolant expans ion
tank ¢ fig. 246, ¢ page 258, fig. 242 and
carefully
twist the cap counter-clockwise
¢ _&. .
.,.. Read the engine coolant level in the open
coo lant expansion tank. Wit h a cold eng ine,
the coolant leve l should be between the
"min " and "max" mar kings. When the en-
gi ne is wa rm, the level may be slightly above
t he "max" mark ing.
The location of the coo lant expansion tank
can be seen in the engi ne compa rtment illus-
trat ion
¢
page 258 .
To obtain an accu rate reading, the engine
must be switched off.
The expansion ta nk in your vehicle is equ ipped
with an electric coolant level sensor .
When the coolant leve l is too low, the warning
light in the Auto-Check System ¢ page 32 will
blink unti l you add coolant and the level has
been restored to normal. Even though there is
an electric coo lant level senso r, we still rec-
ommend you check the coolant level from
t ime to t ime .
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