Audi A4 2024 - Page 239

810127218)
Checking and Filling
be between the markings @) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
» If you must add coolant, use a mixture of water
and coolant additive. Audi recommends mixing
the coolant additive with distilled water.
» Allow the engine to cool = /\.
» Place a large, thick towel on the coolant expan-
sion tank cap.
» Push the release button @) ® fig. 162 on the
cap and carefully turn it to the left until you
feel resistance > /\.
» Push the release button again and remove the
cap completely.
» Requirement for adding coolant: there must be
a residual amount of coolant in the expansion
tanko@.
» Add the correct mixture ratio of coolant
> page 235 up to the upper marking @)
fig. 162.
» Make sure that the fluid level remains stable.
Add more coolant if necessary.
» Turn the cap to the right to tighten it until you
feel resistance a second time.
Checking the coolant level/adding coolant
(2)
Applies to: vehicles with coolant expansion tank n the ple-
num chamber
In vehicles with a 6-cylinder engine, the coolant
expansion tank is located under a cover in the
plenum chamber © page 231, fig. 159.
» Park the vehicle on a level surface.
> Switch the ignition off.
> Allow the engine to cool > A\.
> Open the hood » page 230.
» Remove the cover that is located under the
windshield wiper on the front passenger's side.
» Place a large, thick towel on the coolant expan-
sion tank cap.
» Push the release button @) fig. 162 on the
cap
and carefully turn it to the left until you
feel resistance > A\.
» Push the release button again and remove the
cap completely.
» There is a float located in the coolant expansion
tank. Read the coolant level using the coolant
level float © fig. 163. When the engine is cold,
the float must be located between the MIN
marking and the edge of the filler opening
(MAX) on the coolant expansion tank
© fig. 163. When the engine is warm, the float
can also be slightly above MAX.
» If the coolant level is correct, turn the cap to
the right to tighten it until you feel resistance a
second time, and then reinstall the cover below
the windshield wiper.
» Ifyou must add coolant, use a mixture of water
and coolant additive. Audi recommends mixing
the coolant additive with distilled water.
» Requirement for adding coolant: there must be
a residual amount of coolant in the expansion
tank=@.
» Add coolant in the correct mixture ratio
© page 235 until the float is positioned at the
edge of the filler opening on the coolant expan-
sion tank (= MAX) © fig. 163.
» Make sure that the fluid level remains stable.
Add more coolant if necessary.
» Turn the cap to the right to tighten it until you
feel resistance a second time, and then rein-
stall the cover below the windshield wiper.
~The engine compartment in any vehicle is a
potentially dangerous area. Stop the engine,
switch the ignition off, and allow the engine
to cool before working in the engine com-
partment. Always follow the information
found
in © page 228, General information.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the engine
compartment with caution.
— 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.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There isa risk of poisoning.
237
OwnersManuals2.com