Che cking and Filling
Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold
min. 50% max. -40 °F
regions max. 55% (-40 °C)
([) Note
- Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
spec ified coolant additive as soon as possi-
ble.
- Only refill with new coolant.
- Radiator sealant must not be mixed with
the coolant .
Adding coolant
Fig. 181 Engine compartment: coolant expans ion tank
cover
Observe the safety precautions~ page 189,
Working in the engine compartment .
Checking the engine coolant level
• Park the vehicle on a level surface .
• Switch the ignition off .
• Read the coolan t level on the coolant expansion
tank~
page 192, fig. 179. The coolant level
must be between the MIN and MAX markings
196
when the engine in cold. When the engine is
warm it can be slightly above the MAX marking .
Adding coolant
Requirement: there must be a residual amount of
coolan t in the expansion tan k
~CD-
• Let the engine cool down .
• Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
~&-
... Add coolant m ixed in the cor rect rat io
~ page 195 up to the MAX marking.
• Make sure that the fluid level remains stab le.
Add more coolant if necessary .
• Close the cap securely.
Coolant loss usually indicates there is a leak . Im-
mediate ly drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheat ing
and being pushed out of the cooling system .
A WARNING
- The cooling system is under pressure. Do
not open the coolant expansion ta nk cap
when the engine is hot. This increases the
risk of bur ns.
- The coolan t addit ive and the coolant can be
dangerous to your health. For t his reason,
keep the coolant in the original container
and away from children. There is a risk of
poisoning.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
(D Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the eng ine. If this is the case, do not
continue driving. See an author ized Audi deal-
er or authorized Audi Service Facility for ass is-
tance.
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