AUDI S4 2021 Owners Manual

Owner's Manual
2021 A4
Audi Vorsprung durch Technik

8W1012721BC
Foreword
Thank you for choosing an Audi - we value your trust in us.
Your new Audi will allow you to experience the best in groundbreaking technology and premium quality
equipment that a vehicle has to offer. Audi recommends that you read your Owner's Manual thoroughly
so that you quickly become acquainted with your Audi and make use of all of its features.
In addition to explaining how the different features work, there are many useful tips and information
concerning your safety, how to care for your vehicle, and how to maintain your vehicle's value. Audi also
gives you useful tips and information on how to drive your vehicle more efficiently and in an environ-
mentally-friendly manner.
Audi hopes you enjoy driving your vehicle and wishes you safe and pleasant motoring.

ZA\ warNiNc

Operating, servicing and maintaining a passenger vehicle or
off-highway motor vehicle can expose you to chemicals includ-
ing engine exhaust, carbon monoxide, phthalates, and lead,
which are known to the State of California to cause cancer and
birth defects or other reproductive harm. To minimize expo-
sure, avoid breathing exhaust, do not idle the engine except as
necessary, service your vehicle in a well-ventilated area and
wear gloves or wash your hands frequently when servicing
your vehicle. For more information go to www.P65Warnings.
ca.gov/passenger-vehicle.

Table of contents

About this Owner's Manual......
SUMIMAry: < = exe : eens: Seen cs sens
QutckeaeCe ssh: «i esis se ois a eaves @
Cockpit. ...... 0... eee eee eee eee
Indicator lights overview...........4..
Display and operation...........
Instrument cluster...............
Instrument cluster overview...........
Operating. ecccuse w+ were oo wens oo ayes 9 ¥
Adjusting the display.................
Coolant temperature display...........
Tachometer’ series i ewe so snes ¥ & ome
Odometer.............. cee eee eee ee
Outside temperature display...........
Engine oil temperature indicator.......
Boost indicator...............0--000.
Vehicle functions...............-----
Touch display.....................
General touch display operation........
Multi Media Interface................
Head-up display..................
DeSeriptions: s wees « x wows ¢ cess so eee
Voice recognition system........
Generalinformation.................
DeSeriptions. «+ seams x x arucsms x 0 seine oo coer
External voice operation..............
Global FUNGtHIONS:. icc: 5 6 ese. 6 6 sce
Additional function buttons...........
Starting and driving.............
Personalization..................
Opening and closing.............
Central locking..............00-e eee
Child safety lock.............00.-000
Power WindOWSic« s < sews ys wey 5 2 em 5
Sliding/tilting:SUNTOOF escinie os wise a 6 soe
Panoramic glass roof.................
NOD
OO
12 12 12
13
13
14 14
15
15
15
15
16 17 17 19
Z5
25
26 26 26 27
29;
29
30 30 30
33
33)
37
40
44
45
46 47
Valetiparking = s ss-e «x cscs ov cree a ¥ os 48
Garage door opener..........--.00 eee 48
Lights and Vision................. 51
Exterior lighting...................4. 51
Interior liQhting ss =e aves ss eews so eos 54
ViSIOMsn « 3 ses 3 3 ema oo wena vo ae © ove 55
Windshield wipers.............-..45- 58
Digital compass.............-.-0000- 61
Sitting correctly and safely...... 63
Correct passenger seating position...... 63
Frontseats:: » ssw. « ¢ sews & » saws +s ewe < 63
Steering wheel seis < «cies ¥ eerie ss eee 66
Head restraints.................0000. 67
Safety Beltsi: s sass x eeups ¢ < saves 2 e cee 68
Memory function . « scons ecw ee cro ee 71
Airbag system... ... 2.62... 0 ee eee eee 7X
Child safety seats.................04- 76
Storage and convenience........ 82
POWErSOURCES coisa gs seen ss wae se aes 82
Gup holders. ¢ ssn ss wee 2 2 see 2 & pee 82
Storage and compartments............ 83
Luggage compartment............... 83
ROOF hacks « = weies x = wae 2 s eae 2 & ween 2 88
Warm and cold................... 90
Climate control system............... 90
3-zone deluxe automatic climate control. 91
Steering wheel heating............... 93
Fluids in the A/C system. .........0065 93
Driving .............. 0.0... eee eee 95
Starting the vehicle...............0.0. 95
When driving isis ss iovsvie se aerswce oo anes oe 96
Drive system... 2.2... ee eee eee eee 101
Start/Stop system .........ee cece eee 102
BrakeS's so isemi 2 wane w aman a 2 oer as ie 104
Electromechanical parking brake....... 106
Special driving situations.............. 107
Driving: dynamic. . « sic. 6 6 see a 6 se 110
Audi drive select..................00. 110
SUSPENSION es « + exes ¢ ¢ eres +o ees vv eae 111
SUECOMIING 6 vessse oo csisweue io & stone 6 a toma ww Bs Lid

8W1012721BC
Table of contents


All wheel drive (quattro).............. 112
Electronic Stabilization Control......... 113
Trailer towing.................... 115
Driving with atrailer................. 115
Assist systems................... 117
Assist systems................... 117
General information. . 117
Surrounding area detection............ 118
Driving information.............. L241
Speed warning systeM.........-.00 00 121
Camera-based traffic sign recognition... 121
Traffic light information.............. 123
Lap tel ws = = sees 5 5 ses 2 2 eee ge ee 124
Integrated Toll Module............... 125
Driver assistance................. 127
Cruise control system............20-- 127
Efficiency assist....... 0.00... 128
Audi adaptive cruise control........... 130
Traffiejaim assists: « ¢ sas s o aerey & 2 sores x 138
Distance warning ...... 2.00... .00000. 140
Audi active lane assist/lane departure
WARNING: = = wey = o eee 2 o wees 2 Rae & 2 BS 141
Audi pre sense... ...... cee eee eee 143
Side assist... 0.0.6... cece eee eee 147
EXit Warnitig ces s = ewes 5 & eee § o eee es 148
Parking and maneuvering....... 150
TNtROGUetiON « = sew ce sees 5 2 eee : x ewer 150
Parkirigiaid plus o seswies «5 acinwse ow enanave a & ox 150
Rearview camera and peripheral cameras. 152
Rear cross-traffic assist.............0. 156
Assisted
parking............ 0 eee eee 157
Park assist... 0.0... ccc eee ee 159
Infotainment system............ 162
Telephone..................-0-005 162
Introduction................ 0000-0 162
S@tUP -cusy 9 sous & ¥ Sew Yo eR Es ewe 162
Using the Audi phone box............. 164
Using the telephone.................. 166
SOtUiNGS sisis < & eawig + eels # eee s BwR 169
MOSSAQESicies «i sanswis 6 v sete + 0 oxime 4 9 aie 170
Troubleshooting............--.000005 172
PRCT COMMBCE 's. cosves 5 6 sivas 6 6 snes 8 oo LS
General information................- 173
Audi connect Infotainment............ 173
Using a Wi-Fi hotspot................ 174
Audi connect Infotainment services..... 174
Functions on demand................ 175
Audi connect vehicle control services.... 175
Settings............. 0.0.00 002 eee 176
TRGUBIESHOOLING sass ¢ scm s 3 Hae 5 tee 177
Emergency call................... 178
Overview... 12.0... eee eee eee 178
Emergenicy'call « css s sees 6 s gems © + eeu 178
Online roadside assistance............ 179
NaViGGationtc: « « meus « & seu sc poms + «oe 181
Opening navigation............0..005 181
myAudi navigation...............000. 181
Entering a destination................ 182
Stopping route guidance.............. 185
Map... .. see cece eee eee 185
Alternative routes.............2-.00. 187
Additional functions................. 187
Satellite map.......... 2.0... ee eee 188
Mapupdaté-: « 2cas ss ees 9 ¢ eews vs pee 189
Traffic incidents’. = vce se eeu ve exon ewe 190
SETEIIGS sseneie oo smeneie © oxemenene © sitadame @ © etnznis 191
RAGUIG:: « cas 2 = seus « s pomp o 6 com 2 ¢ ce 193
General information................. 193
Radio functions................00005 194
Online radio's: ss sees ss eees ye epee se ee 197
Options and settings.............0005 198
Troubleshooting..............--000-5 199
PRE wei. as aoscen oo sauweme 3 & coset 3 v wens 201
Generalinformation................. 201
Bluetooth audio player............... 201
Amazon Alexa... 0.000 s eee bee eee ees 202
Multimedia connections.............. 202
Playing media. ........ 2. cece eee eee 203
Options and settings................. 207
Supported media and file formats...... 207
Troubleshooting..............--.0005 209
Audi smartphone interface...... 210
Setup... 2... eee eee eee 210
Troubleshooting.............---.00-5 211

Table of contents


Additional settings.............. 212
System settingS.............ce ee eee 212
Software update... 1.2... .. cc cece ee eee 213
Connected devices.............000 005 214
Legalinformation................... 215
Additional information.......... 216
Brands and licenses..............0-0- 216
Maintenance and Care........... 217
Checking and Filling............. 217
LE 217
Refttelingiecs ss sees s eames s Reee ee ewe 218
Emissions control system............. 220
Engine compartment................. 221
ENGING2Otls sees 2 x seus « ones x ove Bee 224
Cooling:system « « ssccses ve emacs ve asecane s & ave 227
Brake fluid... 0.2... eee eee eee 229
Electrical system............22---05- 230
Battery’: « & ces «6 cow © 6 eee «8 eens ¥ oe 230
Windshield washer system...........- 233
Service interval display............... 233
WSENGRRES Ee ceicece 0 ccneace x 0 wprsnne x « scecane a 0 ane 235
Wheels and Tires . . 235
Tire pressure monitoring system....... 252
Care and cleaning................ 255
Generalinformation................. 255
Car washes « sscica ea scam a 0 eine oo acne 0 6 255
Cleaning and care information......... 256
Taking your vehicle out of service....... 260
Do It Yourself .................... 261
Emergency assistance........... 261
General information...........0..0.. 261
Equipment.............00- cece eee 261
Tire Mobility’ kit «0. ss cece se ces se ee 261
Changing’ tire = sco: +s ween so some 2 2 ore 263
Space-saving spare tire............... 266
Collapsible spare tire..............0.. 267
JUIMP'StAFting « wos s = weve s eerws F coos 268
TOWING wwewiwe «2 exersie w > suseine 6 > cxememe 6 4 cuneec 269
Fuses and bulbs.................. 272
FUSCSiercs ao accsans wo cena wo ee @ 8 ROIS & ore 272
Bulbs... 0.0... cee eee eee eee 276
Customer information........... 277
Data privacy..................008. 277
Privacy MOtiCe « mes x x eee 2 Ree ¢ RES ¥ 277
Image recording): « « sus 2 wanes 2 2 wweem 2 2s 277,
Data memories............0..00 eee ee 277
Transmitted information.............. 278
Accessories and technical
changes................ 0.0.02 eee 281
Warranty’: « + esos & + meen & ¢ eee se sees 281
Audi Literature Shop.............000- 281
Driving in other countries............. 281
Maintenance, repairs, and technical
IMOGIFICATIONS « snocue so sume = emmace # m annem 281
Accessories and parts..............-. 283
Reporting Safety Defects.............. 283
Declaration
of compliance for
telecommunications equipment and
electronicisysteMms:: s = caws se waa « 2 gems 284
Technical data.................... 286
Identification data................04. 286
Vehicle datas ss nico s ves se oman evs 286
Index ...... 00.0... eee eee 288

8W1012721BC
About this Owner's Manual

In this manual, Audi provides important informa-
tion, tips, suggestions, and warnings for using
your vehicle. “Audi” refers to AUDI AG, the re-
spective importer in a country, as well as joint
ventures.
It has always been Audi's policy to continuously
improve its products. Audi reserves the right to
make changes in design and specifications, and
to make additions or improvements in its prod-
ucts without incurring any obligation to install
them on products previously manufactured. This
owner's manual is based on the current data
available when it was printed. Text, illustrations,
and specifications in this owner's manual are
based on the most current information available
at the time of printing, and shall not constitute a
basis for liability claims.
KEEP THIS GUIDE
Keep this manual and any other applicable docu-
ments in your vehicle at all times. This is espe-
cially important if you loan your vehicle to others
or sell it.
This owner's manual describes the equipment
range for all model versions of this vehicle at the
time of printing. Individual equipment options
described may only be available at a later date or
may only be offered in certain countries.
Some sections in this manual do not apply to all
vehicles. When this is the case, the beginning of
the section indicates the validity, for example
“Applies to: vehicles with speed warning sys-
tem”. Optional or vehicle-specific equipment is
ugn also identified with an asterisk “*”.
The illustrations in this manual are a guide.
Some of the details in your vehicle may differ
from the illustration.
All directions, such as “Left”, “right”, “front” and
“rear”, are based on the vehicle's direction of
travel.
* — Optional equipment or vehicle-specific equip-
ment
b> The section continues on the next page.
=> A\ Cross reference to a “WARNING” within a
section. If a page number is indicated, the
WARNING is located outside of the section.

IN WARNING
Text with this symbol contains information
about safety and how to reduce the risk of se-
rious personal injury or death.
C) Note
Text with this symbol contains information
about reducing the risk of damage to your ve-
hicle.

(@) For the sake of the environment
Text with this symbol contains information on
protecting the environment.
G) Tips
Text with this symbol contains additional use-
ful information.

Quick access

Quick access
Cockpit

[RAZ-0886.


Fig. 1 Cockpit
@ Door handle @ Lockable glove compartment with:
@ Central locking switch ........... 35 — Valet Parking function ......... 48
@ Memory function buttons ........ 71. ~@ Front passenger's airbag ........ 71
@ Vent GO; KSC Sia auc 2 x wee so ews 2 ae 71
© Lever for: @® Climate control system .......... 90
—Turn signals and high beams .... 52. @@ Depending on equipment, buttons
— High beam assistant .......... 52 for:
— Audi active lane assist ......... 141 drive SELCCE cassis «6 sossan © 4 esr © 6s 110
— Traffic jam assist ............. 138 —Start/Stop system ............ 102
© Multifunction steering wheel with: — Electronic Stabilization Control
_iHorn' bet (ES@) we < = ween «seme se ee zea 114
—Driver's airbag .............0- 71 — Panassist ws 5 2 aque « s quae x # me 159
— Operating buttons ............ 13, 29 — Parking system ..........-..+. 150
—Shift paddles ................ 99 — FUL Fold aSSi8t cies 2 4 onus oo ees 108
@ Instrument cluster ............. 12 — Center display .............0 0s 19
Reset trip odometer ............ 15 @ Socket .......seeseeeee eens 82
© Windshield washer system lever .. 58 @ Cupholder ........ 0.0 seer eee 82
@ Emergency flashers ............ 53 @© MMI0n/Off button ............. 19,29>
@ Center display ................. 19

8W1012721BC
Quick access

@9 Center armrest with storage com-
partment. Depending on vehicle
equipment, it may have:



— Audi music interface .......... 202
—Audi phone box ............... 164
— Starting the engine if there is a
MALFUMERION since oo sxosoue x 2 seems ss 95
@) Electromechanical parking brake
BUGGOT sieves so cman « 2 ewes 2s men 2 106
@) Selector lever (automatic transmis-
SIOM) seo so neon & v Howe & eRe Fa 97
@3 Storage compartment .......... 83
@ [START ENGINE STOP]button .... 95
@3) Audi music interface ............ 202
@@ Steering wheel adjustment ...... 66
@) Lever for:
— Cruise control system ......... 127
— Audi adaptive cruise control .... 130
® Button for switching the head-up
display on and off, adjusting the
height ........ 2... cee eee eee 25
@ Instrument illumination ......... 55
60) Connection port for the On Board
Diagnostic System (OBD) ........ 277
@) Headlight control switch ........ 51
@ Hood release ...............0-. 222
63 All-weather lights button ........ 51
@4 Luggage compartment lid button . 40
@5) Exterior mirror adjustment ...... 55
68 Buttons for:
— Power windows ...........00. 45
—Child safety lock .............. 44
@) Tips
Some the equipment listed here is only instal-
led in certain models or is available as an op-
tion.
Indicator lights overview
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or mal-
functions. Some warning and indicator lights
turn on when you switch the ignition on and must
turn off when the drive system is switched on or
while driving.
With some indicator lights, messages may ap-
pear and warning signals may sound. The indica-
tor lights and messages may be covered by other
displays. To show them again, select the second
tab for messages with the multifunction steering
wheel > page 13.
Some indicator lights in the display can display in
several colors.
OMe eee any
If the wA or N indicator light turns on, check
the message in the instrument cluster.
The following indicator lights may be available,
depending on the vehicle equipment:

Red indicator lights
Central indicator light
=> page 7,
Instrument cluster
=>page 12
















Cooling system
> page 14,
=> page 227,
=> page 227
Safety belt
=> page 70
Transmission
= page 100
Drive system
= page 102,
Electrical system
=> page 230
Brake system
=>page
105,
=>page 229,
Electromechanical parking brake
=> page 107 >

Quick access

Brake system
=> page 105,
=> page 229,
Electromechanical parking brake
=> page 107
Electromechanical parking brake
=> page 106
Electromechanical parking brake
=> page 106
Steering
>page 111
Steering lock
>page 111
Adaptive cruise control
=> page 131,
Safe start monitor
> page 136,
Driver intervention request
=> page 137
Traffic jam assist
=> page 138
Steering intervention request
=>page 139
Distance warning
=> page 140
Active lane assist
=> page 141
Pre sense
> page 144
Hood
=> page 222
Engine oil pressure
=> page 224
Engine oil level (MIN)
=> page 224
Electrical system
= page 230

Yellow indicator lights
Central indicator light
=> page 7
Engine speed limitation
=>page 14



























Engine speed limitation
> page 14,
Drive system
= page 102
Central locking
=> page 35
Bulb failure indicator
=> page 54
Adaptive light
=> page 54
Headlight range control system
> page 54
Light/rain sensor
=> page 54,
=> page 60
Windshield wipers
=> page 60
Safety systems
=> page 72
Engine start system
=> page 96
Convenience key
=> page 96
Transmission
=> page 100
Brake system
=>page 105
Electromechanical parking brake
=> page 107
Suspension control
> page 111
Steering
=> page 111
Steering lock
>page 111
All wheel drive
> page 112,
Sport differential
> page 112
Electronic Stabilization Control
(ESC)
=>page 114