Checking and Filling
Coolant Freeze protec-
tion
additi ve
Warm min. 40% min. -13 °F
regions (- 25 °C)
max . 45%
Cold min. 50% max. -40 °F
regions (-40 °C)
max. 55%
@ 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. Th is is especially important
when driving in co lder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive . You cou ld damage the en
gine.
If t his happens, only use wate r and re
store the correct mixture ratio with the
specified coolant additive as soon as possi
ble .
- Only refill with new coo lant.
- Radiato r sealant must not be mixed w ith
the coo lant .
Adding coolant
Fig . 183 Eng ine co mpartment : coo lant expans ion ta nk
cove r (exa mple)
Observe the safety precautions c:::> page 233 ,
Working in the engine compar tment.
Che cking the engin e coolant l evel
.. Park the vehicle on a level surface .
.. Switch the ignition off .
240
~ 0 > 00 ID
.. Read the coolant level on the coolant expansion
tank
c:::> page 236, fig. 180 . The coolant level
must be between the markings when the en
gine in cold. When the engine is warm it can be
slightly above the upper mark ing .
Adding coo lant
Requirement : there must be a residual amount of
coolant in the expansion tank
c:::> @ .
.. Let the engine cool down.
.. Place a clot h over the coolant expansion tank
cap and unscrew the cap counterclockwise
c:::> ,A .
.. Add coo lant mixed in the correct rat io
c:::> page 239 up to the upper marking .
.. Make sure that the fluid level remains stable.
Add more coolant if necessary .
.. Close the cap securely .
Coolant loss usually ind icates there is a leak. Im
mediate ly dr ive your vehicle to a n author ized
Audi dealer or author ized Audi Service Fac il ity
and have the cooling system inspected. If the
cooling system is not lea king , a loss can come
from the coolant boiling through overheat ing
and being pushed ou t of the cooling system .
Lil WARNING
- The cooling system is under pressure. Do
not open the coo lant expansion tank cap
when the engine is hot. This increases the risk of burns.
-The coolant additive and the coolant can be dangerous to your health. For this 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, wh ich
increases the r is k of injury.
@ Note
Do not add coolant if the expans ion tank is
empty . A ir could enter the cooling system and
-
damage the eng ine . If this is the case, do not ..,.
