2018 AUDI A4 heating

a co .... N ,....
N .... 0 0
3 co
Fuse panel © (brown)
4 Audi side assist
8 Smart module (tank)
11 12 Volt battery
12 Homelink
13 Rearview camera, peripheral cameras
14 Right tail lights
16 Right safety belt tensioner
Fuse panel © (red)
No . Equipment
2 Sound-amp
lifier
3 AdBlue heating
5 Trailer hitch (right light)
7 Trailer h
itch
8 Trailer hitch (left light)
9 Trailer h itch (socket)
10 Sport differential
11 AdBlue heating
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for
you.
It is becoming increasingly more and more diffi­
cult to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­ moved before you are able to get to the bulb.
This applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment.
Sheet metal and bulb holders can have sharp
edges that can cause serious cuts, parts must be
correctly taken apart and then properly put back
together to help prevent breakage of parts and
l ong term damage from water that can enter
housings that have not been properly resealed.
For your safety, we recommend that you have
your author ized Audi dealer replace any bulbs for
you, s ince your dealer has the proper tools, the
correct bulbs and the expert ise.
Fuses and bulbs
Gas discharge lamps (Xenon lights) :
Due to the high e lectr ical voltage, have the bulbs
replaced by a qualified technician. Headlights
with Xenon light are identified by the high volt­
age sticker .
LED headlights*
LED headlights require no maintenance. Please
contact your authorized Audi dealer if a bulb
needs to be replaced .
.&, WARNING
Changing Xenon lamps without the necessary
equipment can cause serious personal injury.
- Bulbs are pressurized and can explode when
be ing changed. Potential risk of injury!
- On veh icles equipped with gas discharge
bu lbs (Xenon light) life-threatening injuries
can resu lt from improper handling of the
h ig h-vo ltage portions of such lamps!
- Only your authorized Audi dealer or quali­
fied workshop should change the bulbs in
gas discharge lamps. There are parts with
sharp edges on the openings and on the
bulb holders that can cause serious cuts. If
you are uncertain about what to do, have the work performed by an authorized Audi
dealer or qualified workshop. Ser ious per­
sonal injury may result from improperly per­
formed work.
(D Tips
- If you st ill prefer to replace the light bulbs
yourself, be aware that the engine compart­ ment is a hazardous area to work
in¢ A in
Working in the engine compartment on
page 323.
- It is best to ask your authorized Audi dealer
whenever you want to change a bulb .
373

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Scan (radio) . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Screen
refer to Display . . . . . . . . . . . . . . . . . . . 13, 16
Screwdriver . . . . . . . . . . . . . . . . . . . . . . . . . . 360
SD card reader
(MMI)
SDS
refer to Voice recognition system ...... .
Search area (point of interest) .... .. .... .
Search function 228
167
207
refer to Free text search
Seat adjustment 164,238
Head restraints . . . . . . . . . . . . . . . . . . . . . 257
Sea t belts
refer to Safety bel ts . . . . . . . . . . . . . . . . . . 263
Seat heating/ventilation . . . . . . . . . . . . . . . . 78
Seating capacity . . . . . . . . . . . . . . . . . . . . . . 263
Seating position Driver
... .. .. ............... .. .. .. .
Front passenger ................. ... .
How to adjust the front seats .... ... .. .
Incorrect seat position ............. . .
Occupants .. .. ............... .. .... . 255
256
256
258
255
Rear passengers . . . . . . . . . . . . . . . . . . . . . 257
Seats Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Correct seating position . . . . . . . . . . . . . . 255
Number of seats . . . . . . . . . . . . . . . . . . . . 263
Secondary phone . . . . . . . . . . . . . . . . . 177, 249
Selecting a source (media) . . . . . . . . . . . . . . 236
Selection menu . ... .. ..... ... .. 14 , 157 , 161
Selective ca talytic reduction
refer to AdBlue ............... .. .. .. . 319
Selective whee l torque control . . . . . . . . . . 146
Selector lever
Selector lever posit ions . . . . . . . . . . . . . . . . 91
Self-learning navigation
refer to Personal route ass istance . . . . . . 210
Serv ice and disposa l
Safety belt pretensioner . . . . . . . . . . . . . . 270
Service interval display . . . . . . . . . . . . . . . . . 333
Servi ce position
refer to Replacing wiper blades . . . . . . . . . 62
SE T REAR (button) . . . . . . . . . . . . . . . . . . . . . 79
Index
Settings
Directory ... ... .. .. ................ .
Map ....... ... .. .. ................ .
Media
Navigation .... .. .. .... ....... .... . .
Radio
....... ... .. .................
System (MMI) .. .. .. ...... ....... .. . . 186
21S
239
212
2 25
248
Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Vo ice recognit ion system ... ... ... .. . .
Set ting the language . ....... ........ . .
Shad e 248
248
Rear window/rear doors . . . . . . . . . . . . . . . 60
Sh ift paddles . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Shor tcut keys . . . . . . . . . . . . . . . . . . . . 155 , 162
Shuffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 289
How they work . . . . . . . . . . . . . . . . . . . . . . 291
Side assist Cleaning the sensors 355
Rear cross-traffic assist . . . . . . . . . . . . . . . 132
also refer to Audi side assist . . . . . . . . . . . 128
Side curtain airbags . . . . . . . . . . . . . . . . . . . 292
Description . . . . . . . . . . . . . . . . . . . . . . . . . 292
How they work . . . . . . . . . . . . . . . . . . . . . . 293
Safety instructions . . . . . . . . . . . . . . . . . . . 294
SiriusXM alert notifications . . . . . . . . . . . . . 224
Sliding/tilting sunroof . . . . . . . . . . . . . . . . . . 49
Sunshade . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Snow chains . . . . . . . . . . . . . . . . . . . . . . . . . 350
Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
68
Software update
refer to Map update . . . . . . . . . . . . . . . . . . 192
refer to System update (MMI) .. .. .. .. .. 251
Softw are (MMI)
License agreement . . . . . . . . . . . . . . . . . . . 253
Update .......... .... ........... ... 251
Version 251
Sou rces of info rmation about child restraints
and their use . . . . . . . . . . . . . . . . . . . . . . . . . 314
Space-saving spare tire (compact spare tire) 3.67
Spare tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . 367
Speed dependent volume. . . . . . . . . . . . . . . 252
Speed limit info
refer to Traffic sign recognition
Speed limits
refer to Traffic sign re cognition 104
104
397

Index
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . 10
Speed warning system . . . . . . . . . . . . . . . . . 102
Speller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Sport differentia l . . . . . . . . . . . . . . . . . . . . . 134
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 35
Sport view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Stabilization program
refer to ESC . . . . . . . . . . . . . . . . . . . . 146, 147
Start/Stop system . . . . . . . . . . . . . . . . . . . . . 85
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Switching off/on . . . . . . . . . . . . . . . . . . . . . 87
S T ART ENGINE STOP button . . . . . . . . . . . . . 83
Starting to drive . . . . . . . . . . . . . . . . . . . . . . . 89
Starting (engine) . . . . . . . . . . . . . . . . . . . 83, 86
Steering Electromechanical steering . . . . . . . . . . . . 150
L ocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
also refer to Electromechanical steering 150
Steering wheel Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Shift paddles . . . . . . . . . . . . . . . . . . . . . . . . 94
Steering wheel heating . . . . . . . . . . . . . . . . 79
also refer to Multifunction
steering wheel . . . . . . . . . . . . . . . . . 13, 15, 16
Steps for determining correct load limit . . . 348
Stopover (navigation) . . . . . . . . . . . . . . . . . . 209
Stopping (engine) . . . . . . . . . . . . . . . . . . . . . . 86
Storage compartments . . . . . . . . . . . . . . . . . 69
Stored stations
refer to Favorites . . . . . . . . . . . . . . . . . . . . 225
Streaming
refer to Online media . . . . . . . . . . . . . . . . . 232
Street View . . . . . . . . . . . . . . . . . . . . . . . . . . 216
S tronic (automatic transmission) . . . . . . . . . 91
Subtitles (DVD) . . . . . . . . . . . . . . . . . . . . . . . 239
Subwoofer. . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Sunshade Rear window/rear doors . . . . . . . . . . . . . . . 60
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Suspension control . . . . . . . . . . . . . . . . . . . . 134
Swap call . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Switching tabs
refer to Multifunction
steering wheel . . . . . . . . . . . . . . . . . 13, lS, 16
Switching the ignition on/off. . . . . . . . . . . . . 83
398
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16S
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 214
Traffic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
also refer to Indicator lights . . . . . . . . . . . . 2S
SYNC (button) . . . . . . . . . . . . . . . . . . . . . . . . . 79
System settings (MMI) . . . . . . . . . . . . . . . . . 248
System update (MMI) ... ............... 251
System volume 252
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 10, 12
Tail lights
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
TOI clean diese l
refer to Ad Blue... .. .. ............... 319
Technical data ...... ... ............... 379
Technical modifications . . . . . . . . . . . . . . . . 386
Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Connecting . . . . . . . . . . . . . . . . . . . . . . . . . 175
Dialing a number . . . . . . . . . . . . . . . . . . . . 178
Options during a phone call . . . . . . . . . . . 179
Playing music . . . . . . . . . . . . . . . . . . . . . . . 230
Set tings . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Temperature display Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Outside temperature . . . . . . . . . . . . . . . . . . 10
Tether anchors . . . . . . . . . . . . . . . . . . . . . . . 312
Tether strap .. .. .. .. .. ............. .. 312
Text messages . . . . . . . . . . . . . . . . . . . . . . . 180
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . . 73, 261
Tightening specification Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . 366
Tightening specification (wheel bolts) . . . . 366
Time ......... ... ... ............. ... 248
Tire Mobility System (tire repair set) . . . . . . 361
Tires....... .. .. .. .. .. ... .......... .. 334
Low-profile tires . . . . . . . . . . . . . . . . . . . . . 350
quattro . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Repair set . . . . . . . . . . . . . . . . . . . . . . . . . . 361
R eplacing . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Tire pressure . . . . . . . . . . . . . . . . . . . . . . . 344
Tire pressure monitoring system ... 351,352
Tire pressure table . . . . . . . . . . . . . . . . . . . 345
Tire pressure (trailer towing mode) . . . . . . 99
Unidirectional . . . . . . . . . . . . . . . . . . . 336, 366
Uniform tire quality grading . . . . . . . . . . . 351

Index
What happens if you wear your safety belt too
loose? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
267
What happens to unbelted occupants? . . . . 264
What impairs driving safety? . . . . . . . . . . . . 254
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . 349
Wheel replacement . . . . . . . . . . . . . . . . . . 363
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Clean ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Glossary of tire and loading terminology . 336
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Tire pressure monitoring system . . . . . . . 352
Tires and vehicle load limits . . . . . . . . . . . 347
Wheel wrench . . . . . . . . . . . . . . . . . . . . . . . . 360
When must a safety belt be replaced? . . . . 265
When must the airbag system be inspected? 283
Where are lower anchorages located?
310
Wi-Fi
Audi music stream .. .......... .... ...
231
Audio player .. ... ............ .... .. . 231
Hotspot . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Online media . . . . . . . . . . . . . . . . . . . . . . . 232
also refer to Wi-Fi . . . . . . . . . . . . . . . . . . . 231
Windows
Child safety lock . . . . . . . . . . . . . . . . . . . . . . 48
Cleaning/removing ice . . . . . . . . . . . . . . . .
356
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Power windows . . . . . . . . . . . . . . . . . . . . . . 48
Windshield Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . 78
also refer to Windshield . . . . . . . . . . . . . . . 60
Windshield washer system . . . . . . . . . . 60, 332
Reservoir capacity . . . . . . . . . . . . . . . . . . . 381
W indshield wipers . . . . . . . . . . . . . . . . . . . . .
60
Winter operation
Car washes . . . . . . . . . . . . . . . . . . . . . . . . .
354
Cooling system . . . . . . . . . . . . . . . . . . . . . . 329
Defrosting the windows . . . . . . . . . . . . . . . 78
Removing ice from w indows . . . . . . . . . . .
356
Seat heating . . . . . . . . . . . . . . . . . . . . . . . . . 78
Snow chains . . . . . . . . . . . . . . . . . . . . . . . .
350
Steering wheel heating . . . . . . . . . . . . . . . . 79
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Vehicle battery .... ........... .... ... 331
Windshield washer system . . . . . . . . . . . . 332
Winter tires . . . . . . . . . . . . . . . . . . . . . . . . . . 349
400
X
Xenon headlights . . . . . . . . . . . . . . . . . . . . . 373
z
Zooming (map) .. .. .. .. ........... 206, 214