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Coolant additiv e
The coolant additive is made of anti-freezing and
corrosion protection agents. Only use the follow -
ing coolant additives . These additives may be
mixed with each other .
Coolant additive Specification
Gl3 TL 774 J
Gl2 ++ TL 774 G
The amount of coo lant add itive that needs to be
mixed with water depends on the climate where
the vehicle will be operated .
If the coolant addi-
tive percentage is too low, the coolant can freeze
and damage the engi ne.
Coolant
Freeze protec-
additive tion
Warm
min . 40% m in. -13 °F
regions (-25 °C)
max. 45%
Cold min . 50% max . -40 °F
reg ions
(-40 °C)
max. 55%
(D Note
- Before t he start of winter, have an author-
ized Audi dealer or author ized Audi Se rvice
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 coo lant .
- Radiator sealant must not be mixed with
the coolant.
@ Tips
App lies to: RS models: In certain weather
conditions, moisture such as rain or snow may
evaporate on the rad iator after stopping the
Chec k ing a nd Filling
vehicle . This may cause st eam to escape from
the front of the vehicle .
Adding coolant
Fig . 270 Engine compartment: markings on t he coolant
expansion t ank
Observe the safety precautions r:::;, page 318,
Working in the engine compartment .
Checking the engin e coolant level
.,. Park the vehicle o n a level surface.
.,. Switch t he ignit ion off.
.,. Read the coolant level on the coolant expansion
tank
r:::;, fig. 2 70. The coolant level must be be-
tween the markings when the eng ine in cold .
W hen the eng ine is warm it can be slig htly
above t he upper marking.
Adding coolant
Applies to: vehicles with plug-in hybrid drive:
your vehicle has two coolant expans ion tanks
that are separate from each other. The smaller of
the two expansion tanks must not be opened
r:::;, page 102. Read and follow t he important safe-
ty preca ut ions
r:::;, .&. in Coolant on page 103 .
Requirement: there m ust be a residua l amount of
coolant in the expansion tank
c::>(D.
.,. Let the eng ine cool down.
.,. Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
c::> .&_ .
.,. Add coo lant m ixed in the cor rect rati o
r:::;, page 324 up to the upper m ar king .
.,. Make sure that the f luid leve l remains stab le.
Add mo re coolant if necessa ry.
.,. Close the cap securely.
325
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