2021 AUDI A4 Water level

8W1012721BC
Checking and Filling


— Maintain enough distance when you are re-
moving the oil drain plug. While doing this,
keep your forearm parallel to the ground to
reduce the risk of hot oil dripping down your
arm.
— Drain the oil into a container designed for
this purpose that is large enough to hold the
full amount of oil in your engine.
— Engine oil is poisonous. Always store out of
reach of children.
— Prolonged contact of used engine oil with
the skin may cause skin damage. Always
wash oil off immediately with soap and wa-
ter to protect your skin.
@) Note
Do not mix any additives with the engine oil.
Additives may cause engine damage that is
not covered by your New Vehicle Limited War-
ranty.

() For the sake of the environment
— Before changing the engine oil, make sure
you can dispose of the used engine oil cor-
rectly.
— Engine oil must always be disposed of cor-
rectly. Do not dump it in the yard, in the for-
est, or in open water, river channels, or sew-
ers.
— Have your used engine oil recycled by bring-
ing it to a used oil collection site or contact
a gas station.
Cooling system
The engine cooling system is filled with a mixture
of purified water and coolant additive at the fac-
tory. This coolant must not be not changed.
The coolant level is monitored using the B indi-
cator light. However, occasionally checking the
coolant level is recommended.
Messages
/_E| Turn off engine and check coolant level. See
owner's manual
The coolant level is too low.
Stop driving and switch the engine off. Check the
coolant level > page 228.
— If the coolant level is too low, add coolant
=> page 228. Only continue driving once the in-
dicator light turns off.
& Coolant temperature: too high. Please let
engine run while vehicle is stationary
Let the engine run at idle for a few minutes to
cool off, until the indicator light turns off.
— If the indicator light does not turn off, do not
continue driving the vehicle. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
| Coolant system: malfunction! Please turn
off engine
Do not continue driving, shut the engine off, and
switch the ignition off.
— See an authorized Audi dealer or authorized
Audi Service Facility for assistance.
Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents. Only add the follow-
ing coolant additives mixed with distilled water.

Coolant additive Specification


Gl12evo TL774L

The amount of coolant additive 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 engine.


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
227
>

Checking and Filling

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 G12evo coolant additive is not availa-
ble in an emergency, do not add any other
additive. You could damage the engine. If
this happens, only use distilled water and
restore the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— You can continue driving if the permitted
G12evo coolant additive was not added.
However, go to an authorized Audi dealer or
authorized Audi Service Facility immediately
to have the coolant replaced to reduce the
risk of engine damage.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.
(Gitta diet lis

RAZ-0540,



Fig. 161 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 221, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 222.
228
The coolant expansion tank for some engines is
located in the water drip tray under a cover. If
necessary, remove the cover that is located under
the windshield wiper on the front passenger's
side.
> Check the coolant level in the coolant expan-
sion tank > page 223, fig. 159 using the outer
markings (2) > fig. 161. The coolant level must
be between the markings (2) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
» Applies to: vehicles with 6-cylinder engine:
There is a float located in the coolant expansion
tank. Read the coolant level using the coolant
level float. When the engine is cold, the float
must be located between the MIN marking and
the edge of the filler opening on the coolant ex-
pansion tank.
> When you add coolant to the expansion tank,
please refer to > page 227, Cooling system.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank >@).
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. 161 on the
cap and carefully turn it to the left until you
feel resistance > /\.
> Push the release button again and remove the
cap completely.
» Add coolant in the correct mixture ratio
=> page 227 up to the MAX marking. Or, in
vehicles with a 6-cylinder gasoline engine, the
float must be located between the MIN mark-
ing and the edge of the filler opening on the
coolant expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Vehicles with 6-cylinder engine: if necessary,
press the float into the coolant expansion tank
using the cover.
> Turn the cap to the right to tighten it until you
feel resistance a second time.

8W1012721BC

Drive select

refer to Audi drive select.............0. 110
Drive system... 1.2... cee ee eee 101
AUdi drive Select sais s & news < ¢ says & 3 ve 110
Drive system (message) ........... eee eee 103
Driving down hills............ 00.000 eee 107
DFIVIMGJPFOGFAMM:. « wnaceos % 0 spesine 6 & axonese on mune 137
Driving through water...............0.. 108
Driving CIM: « cescues & a ssanees vw ones vv orn a 8 a 16
Driving tips
Driving through water...............-- 108
Efficient driving...............-00000- 102
Offroad GriWitG cows sc caws se pean es ewan 108
Uphill and downhill................00. 107
Driving:up Wills: « ssc s 2 wave 6 o sree wv sew 107
Dust filter
refer to Pollutant filter................. 90
DYMAMMIGIStEORIAG, cxsieos ov secre © « soneers © ¥ soaser Lill
E
EFimailss os i: cwcsan oa ncewios ow sesnin @ ononans wa wretnon 4 T/1,
Settings............. 0.00. e eee eee ee 171
EDL
refer to Electronic Differential Lock...... 113
EDR
refer to Event Data Recorder (EDR)...... 277
Efficiency ASSISE: s wes » x ows & a ews 8 6 ow 128
Predictive :comtro lin: « cxvim x 0 sensawe oo swowane 133
Electrical system ........ 2... cee eee eee 230
Electromechanical parking brake......... 106
Electronic Differential Lock.............. 113
Electronic immobilizer................5-. 38
Electronic Stabilization Control........... 113
Embedded SIM card............--.00005 174
Emergency assistance...............00. 261
Emergency braking function............. 106
Emergency call... «ccc. 2 mwa ve ewe 169,178
Emergency flashers..............--0000- 53
Emergency modéw Emergency operation
DOONS eves ov comme a a same ao omnes vv om x
Fuel filler door
Luggage compartment lid............... 43
Panoramic glass roof................005 47
Sliding/tilting sunroof...............00. 46
Emissions control system..............- 220
EnergyCOnsSUMErSi. & & sive a 2 wasn ao mare oes 16
Energy management...............0005 102
Engine
Breakingiin « sss c= cee = 2 aves ov ere a ee 101
Coolant..... 0.0... cece eee eee ee eee 227
EMe@ngenty StOpis « = ewes 5 2 sees ¢ 2 wees Fs me 95
JUMp'StARtING & vesi% « 6 war % 6 senens & ewes 268
Start/Stop system ......... 0. eee ee eee 102
Starting/Stopping:: « « seme os ews 5 wen s « 95
Engine compartment
Opening and closing the hood.......... 222
OVERVIEW cscssiic xo ciueins xo anette 6H atetaaie © ooetts 223
Safety precautions..................0. 221
Engine oil
AGQING = ex ¢ = seem « = ress « ¢ ee § pe 224
GhANGING sis «sess ss rena « waver 2» omen © 226
Checking oil level.............00-.000- 224
CONSUMPtIONs « 2 was s 2 ene x eee 5 oe 224
Indicator light « sss + «owes sw ssweenn ow vase 224
Replacement interval................. 233
Temperature display............0.e00e 15
Engine sound
Audi driveselect’s osx. < + sx » x come © ee 110
Engine Start/Stop mode
refer to Start/Stop system............. 102
Engine startsystem sce 3 5 seu o 9 was o 9 som 96
Engine stop
refer to Start/Stop system............. 102
Entry/exit. IQhtingie: + scsi as essen & © wonvme a v6 53
Entryiassistanee:: 2 coca 2s acim os eee 2 o were 65
also refer to Exit assistance............. 65
Environment
Unleaded gasoline.................00. 217
ESC
refer to Electronic Stabilization Control... 113
ESC Offroad... 2.1... eee eee ee 114
ESC Sport........... 000.000.0000 0000- 114
eSIM
refer to Embedded SIM card............ 174
Event Data Recorder (EDR).............. 277
Exit assistance .... 0.2... 0.00... e eee eee 65
Exit warning ...... 0.66... e ee ee eee eee 148
Exteriomantenna «cise oo srerw wane © aecete 165
Exterior Lighting’: = = sce «= seus © x cere = 4 seus 51
291