Cooling system AUDI S4 2020 User Guide

Checking and Filling


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 is a risk of poisoning.
@ Note
Do not continue driving if the coolant expan-
sion tank is empty. Do not add any coolant,
because air could enter the cooling system
and damage the engine. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.


Brake fluid

BFV-0229)


Fig. 165 Engine compartment: cap on brake fluid reservoir
Follow the safety precautions > page 214, Gener-
al information.
Checking the brake fluid level
Read the brake fluid level on the brake fluid res-
ervoir > page 216, fig. 162. The brake fluid level
must be between the MIN and MAX markings
SA.
The brake fluid level is monitored automatically.
Message
Ga y @ Brakes: stop vehicle and check brake
fluid level
222
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet
the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

@) Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
Electrical system
If the =z or fm] indicator light turns on, there is a
malfunction in the generator, the battery, or the
vehicle electrical system.

Fuses and bulbs






































Fuse panel @) (brown) Fuse panel (0) (black)
15 |Ignition coils, heated oxygen sensors No. | Equipment
16 | Fuel pump Front seat electronics, seat ventilation,
= rearview mirror, rear climate control sys-
Fuse panel @) (red) | era controls, windshield defogger, Gate-
No. | Equipment way diagnostics
Anti-theft alarm system 2 Gateway diagnosis, vehicle electrical sys-
2 |Engine control module tem control module
3 [Left front seat electronics, lumbar sup- 3 | Sound actuator/exhaust sound tuning
port, massaging seat 4 |Clutch pedal position sensor
4 Automatic transmission selector mecha- 5 | Engine start, emergency shut-off
Sct 6 | Gateway
5 [Horn 7 |USB charging port
6 | Parking brake 8 | Garage door opener
7 | Gateway control module 5 Adaptive cruise control, distance regula-
8 | Roof electronics control module tion
9 |Emergency call system 11 |Video camera
10 | Airbag control module 12 | Right headlight
11
| Electronic Stabilization Control (ESC) 13 | Left headlight
12 | Diagnostic connector, light/rain sensor 14 | Transmission fluid cooling valve
13 | Climate control system 15 | Alarm and hands-free calling system
14 | Right front door control module Fuse panel © (red)
15 |A/C compressor ae
No. | Equipment
Fuse panel (©) (black) 1. |Ignition coils
No. | Equipment 2 |Compressor clutch, CNG system
Front seat heating 5 |Left headlight
2 |Windshield wipers 6 |Automatic transmission
Left headlight electronics 7 |Instrument panel
4 Panoramic glass roof / sliding/tilting sun- 8 | Climate control system fresh air blower
roof 9 | Right headlight
5 |Left front door control module 10 | Dynamic steering
6 | Sockets 11 | Engine start
7 Door control module, right rear window
regulator
AWD control module
Right headlight electronics
10 Windshield washer system/headlight
washer system
rT Door control module, left rear window reg-
ulator
12 | Parking heater

266

8W1012721BB
Index

Numbers and
Symbols
3-zone deluxe automatic climate control.... 88
A
ALC cooling MOde ss « « vesiev «sass w © wernin eon 88
Accelerator pedals sais se cai sv aac oe ews 96
also refer to Accelerator pedal........... 96
AGCOSSONIES «vce. «0 cesses « wesese ao nreree © 5 78,274
Active lane assist
refer to Audi active lane assist.......... 137
Adaptive cruise control................. 127
Adaptive dampers............-.0000005 106
Adjusting air distribution (automatic climate
control system) ......... 0.0.00. e eee ee 89
Adjusting the brightness................. 52
Adjusting the sound..............-...0- 206
Adjusting the temperature (automatic climate
control system) ...... 0.0 e cee eee eee 89
Adjusting the volume..............000005 26
Aitbagsystemn « «: swersve « sxaneus + cuneons wx anecome o 67
Alarm system
refer to Anti-theft alarm system.......... 33
Alignment pin (changing the wheel)....... 253
Alleweatherlightscses ws ances © sonasie » i axssane a 48
All Season tireSiens ss emans e e emie eo enews oo 242
All wheel drive
refer to quattro... . 2... eee eee ee eae 108
AMI
refer to Audi music interface........... 196
Android Auto
refer to Audi smartphone interface...... 204
Anti-freeze
Windshield washer system............. 225
Anti-lock braking system............00-5 109
Anti-Slip Regulation.................05. 109
Anti-theft alarm system..............000 33
Apple CarPlay
refer to Audi smartphone interface...... 204
Aspect ratio (video) ................ 199, 201
ASR
refer to Anti-Slip Regulation............ 109
Audi active lane assist..............0005 137
Cleaning the camera area.............. 248
Audi adaptive cruise control
Cleaning the sensors..............
Predictive control.............05.
Traffic jam assist.............00-.
Audi adaptive light.................
Audi connect
refer to connect...........eee eee
Audi connect Remote & Control
refer to Vehicle control services.....
Audi drive select...............0005
Audi music interface............00.
AudiosFileSviccs «x eon 2 wwe « o emcee 9 8 5
Safety measures..............005
Audi pre sense front..............0-
Audi side assist
refer to Side assist................
Audi smartphone interface..........
Legalinformation................
Audi virtual cockpit
refer to Instrument cluster.........
AUTO
Automatic climate control system...
Automatic headlights.............
Auto Lock (central locking) ..........
Automatic climate control system... .
Automatic luggage compartment lid....
Automatic transmission............
Automatic wipe/wash system........
Average consumption..............
AVETAGE SPEEd ss 5s aean sy ows Bee
B
Band
279

8W1012721BB

Panoramic glass roof.................-. 44
Sliding/tilting sunroof...............005 43
Sunshade (rOOf)'s + ween a 2 wome a 2 cores va eee 44
WINdOWS « wscsese 2 6 ansree 6 o areene a a mmo 2 a aos 42
Gockpit diMMiNg:: « sw ss sews oa eee se es 52
Cockpit (OVEnVieW) « » wwe ss wee seen as cee 6
Collapsible spare tire...............0... 259
Collapsible tire
refer to Collapsible spare tire........... 259
GOlGrCOdG i: = «eee + xaen x 2 Bee a tee ees 277
Compact spare tite = sews y 2 emus se seems ¢ a oe 258
Compartments..............0-.02.0000- 78
Compass inthe mirror..............00005 57
Compliance ..... 0.0... cee eee eee eee 275
Conferencercallicics « o sosvese 0 0 semi a a mace ene 164
Configuration wizard « cccc.s «ews oo emi ae € 18
CONMECUiees ow smears 2 6 eames 3 He 2 6 HeaMEW © wens 169
Data plans........... ee eee eee eee 173
Data Privacyes ss ees sy ose s pees s 3 eee 271
Emergency:calll sess 2s mesic + ewrama » wenn « 174
Infotainment....................2005 169
Infotainment services... ..0... 6.0.5 cee 170
Online roadside assistance............. 175
Vehicle control services... cc... cee es T/L,
Connected devices
Device overvieW........-... 00-2 e eee ee 207
Connections
referto Media...............0-0- 195; 197
Consumer information.................. 272
Consumption
REGUGCING = gaan s 2 aams « noun 6 = Ree 4 5 ROR 99
Consumption (fuel) ........ 2.0.0 15
Contacts
Importing and exporting.............. 166
Updating inthe MMI.................. 166
also refer to Directory...............0. 163
Convenience key........ eee cece eee eee 30
Convenience closing..............++++- 42
also refer to Vehicle key................ 34
Convenience opening and closing
Windows or panoramic glass roof........ 42
Coolant temperature display.............. 13
Cooling system
Adding
coolant..............0.-. eee 221
Checking the coolant level............. 221
Coola Ntseiess 6 2 seine so sovsias eo cere @ x como 220 Cornering
lightics « «cose x 2 secs eo eerie oo ae 48
Cruise control system. ....... 000s ee eee 123
Cup Holdersiescs + ¢ saws s ¢ ees sy eee + e eww x 78
CUFPENECONSUMPLION ais < ease az new ox care 15
D
Data module

Serial number (IMEI) « weiss ss cncane a a wares @ 165
Data plans sss x 5 cows so ween 2s awn oo wee 173
Data Privacy’: « saws = = ses < ¢ sees x 2 eee ee 271;
Date wees : x ween 5 2 nes Fn ERR EES Eee 15
SOTUNG)s ¢ aston a 2 mas a i em @ 8 em & 4 ames 206
Daytime running lamps...............05- 48
Declaration of compliance...........0005 275
DEF CINStrUrMEnt ClUStED) |: saccu s x wows 5 x eae 11
Demo mode
refer to Presentation mode............. 186
Destination onthe map................. 179
DEtailSis : = mx = come 2 2 noe § E neR st me 179
Determining correct load limit........... 241
Digital compass .......... 00. eee eee eee 57
Dimensions............0..0.00..00000- 277
Dimming the exterior mirrors............. 53:
Dimming the rearview mirror............. 53
DineGtOr yin «+ secowi oo seme + o somes % & sense oo 5 163
Business card. ............00 2.00 e eee 163
Settings.......... 0.02.00. e eee eee 165
Display
Cleanings = » sees 5 = sews s = eews te eee ee 249
Displaying tooltips...............-..00- 18
Disposal
Distance Distance
warning .............0.0 eee ee 136
Doors
Child safety lock.............02.000000- 41
Door&#39;contactiswiten s « sasay a « saws 4 & ara 4s SL.
Mechanically unlocking and locking....... 32
Driver information system................ 12
Drives
referto Media...........-...0-.. 195, 197
Drive select
refer to Audi drive select............... 106
Drive systeM.. 1... ee eee eee eee 98
Audi drive Select’: scws « ¢ swe ¢ v e@am ov oe 106
Drive system (message)................. 100

8W1012721BB
Index

De frosting « cscs x x aevece 2 v emacs 2 0 exes a 2 oe 89
Opening and closing.................0. 42
POWErWINdOWS&#39;s « + was 3 x was & a ews so we 42
Windshield
GleaNiNG « « wees vo sae ao eee oo ernie eo oe 55
Defrosting.. 0.0... cece eee eee ees 89
also refer to Windshield................ 55
Windshield washer system........... 55,225
Windshield wipers............0..000e eee 55
Winter operation
Battery. ........ 0. eee eee 223,
Gap WaSNES sayes x x news & 2 canoe x 2 ewe x 2 oe 247
Cooling systeM............ 0... eee eee 220
Defrosting the windows................ 89
Rear window defogger...............+-- 90
Removing ice from windows............ 249
Seat heating............ 0... eee eee eee 89
SNOW ChainSiecs s & seas s x ee go Haws st He 243
Steering wheel heating ............-.005 90
TireS
2 eee eee 242
Windshield washer system............. 225
WIRtEICIRES cc s : cerns 5 2 eeu & § aetas £ # HeRE 242
Wireless CarPlay
refer to Audi smartphone interface...... 204
Wireless charging we. s «mes ss cee se cee 160
291