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0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especially important if you live in a region where
the winter is extremely cold.
If necessary, increase the proportion of
coolant additive to 60% .
• When adding coolant additive to your cooling system, remember :
- We recommend using only coolant additive G12++ (check the
label) for your vehicle. This coolant additive is available at autho-
rized Audi dealers . Other types of antifreeze can significantly
reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle 's
engine coolant. Adding radiator repa ir flu id may adversely affect the
function and performance of your cooling system and cou ld result in
damage not covered by your New Vehicle Limited Warranty . •
Checking the engine coolant Level
The engine coolant level can be checked with a quick
glance.
Fig. 202 Engine
compartment : Coolant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS ~ & in "Working in
the engine compartment" on
page 267.
- Turn off the ignition .
- Let the engine cool down.
- Place a thick rag over the coolant expans ion tank
:: %,·. 202 and carefully twist the cap counter-clockwise
- Read the engine coolant level in the open coolant expan-
sion tank~ fig. 202. With a cold engine, the coolant level
should be between the "min" and "max" mark ings . When
the engine is warm, the level may be slightly above the
"max" marking.
The location of the coolant expansion tank can be seen in the engine
compartment illustration =>
page 268 .
To obtain an accurate reading, the engine must be switched off .
The expansion tank in your vehicle is equipped with an e lectric coolant
level sensor .
When the coolant level is too low, the warning light in the Auto-Check
System =>
page 30 will blink 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 cooling system should be inspected immediately by
your authorized Audi dealer . It is not enough merely to add coolant .
In a
sealed system, losses can occur only if the boiling point of the
coo lant is exceeded as a result of overheating.
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