fuel additives AUDI A4 2018 Owners Manual

Checking and Filling
fill up at busy gas stations where the seasonal
adjustm ent is more likely to be mad e in time.
0 Note
- Methanol fuels which do not meet these re­
quirements may cause corrosion and dam­
age to plastic and rubber components in the
fuel system.
- Do not use fuels that fail to meet the speci­
fied criteria in this chapter .
- If you are unable to determine whether or
not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fuels differ­
ent from those specified are not the respon­
sibility of Audi and are not covered under
the New Vehicle or the Emission Control
System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel blends, we
recommend that you switch to unblended
fuel.
Gasoline additives
Applies to: vehicles with gasoline engine
A major concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use .
Although gasoline grades differ from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engine parts, such as fuel injectors and intake valves.
Al­
though most gasoline brands include additives to keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TIER Detergent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas .com) .
316
After an extended period of using inadequate
fuels, built-up carbon deposits can rob your
en­
gine of peak performance.
([) Note
- Damage or malfunction due to poor fuel
quality is not covered by the Audi New Vehi­
cle Limited Warranty.
- Do not add aftermarket fuel additive prod­
ucts to your fuel tank.
Diesel fuel
Applies to: vehicles with diesel engine
Always use ULSD (Ultra Low Sulfur Diesel) No. 2.
The ULSD No. 2 meets the ASTM 0975.
Diesel fuel with concentrations of biodiesel high­
er than 5
% such as 811,820 or 8100 are strictly
prohibited.
Service station fuel pumps are labeled with the
correct fuel information for easy recognition by
the user. If the diesel fuel pump is not labeled
ask the station operator what fuel is being dis­
pensed before filling up your vehicle.
ULSD No. 2 may not be available outside the USA
and Canada. Be sure to check before traveling to
other countries.
ULSD No. 2 can become thicker in very cold tem­
peratures, and this can impair the engine's start­
ing and running . Depending on the season , gas
stations provide ULSD No. 2 that flows better in
cold temperatures so that you can continue oper­
ating your vehicle as usual.
(D Note
- Your vehicle's diesel engine was designed
soley for use with ULSD No. 2. Therefore,
never use gasoline, heating oil, other fuels
or flow improvers. These contain substances
that will severely damage the fuel system
and the engine. Such damage will not be
covered by your New Vehicle Limited War­
ranty.
- If you put any amount of incorrect fuel in
the fuel tank, do not start the engine under
.,..

a co .... N ..... N .... 0 0
3 co
Emergency call f unction
Au di connect emergency ca ll and service . 202
E me rgency flashe rs . . . . . . . . . . . . . . . . . . . . 56
Emergency starting . . . . . . . . . . . . . . . . . . . 374
E m issions cont rol sys tem . . . . . . . . . . . . . . 32 2
E nergy management . . . . . . . . . . . . . . . . . . 151
Eng ine
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Start/Stop system . . . . . . . . . . . . . . . . . . . . 85
Starting/stopping . . . . . . . . . . . . . . . . . . . . 83
Starting w it h jumper cables . . . . . . . . . . . 374
Eng ine compartment . . . . . . . . . . . . . . . . . . 323
Opening and clos ing the hood . . . . . . . . . . 324
Safety precautions . . . . . . . . . . . . . . . . . . . 323
E ng ine oi l . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Adding . ... ... .. .. ..... ... .. .. .... . 327
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Checking the oil leve l . . . . . . . . . . . . . . . . . 327
Consumption . ............. .. .. .... .
D. t· k lpS IC .. ... ............. ...... ... .
327
327
O il consumption . . . . . . . . . . . . . . . . . . . . . 326
Specification and viscos ity . . . . . . . . . . . . . 325
T empe rature d isp lay . . . . . . . . . . . . . . . . . . 11
Eng ine sound . . . . . . . . . . . . . . . . . . . . . . . . 134
Eng ine Start/Stop mode
refer to Start/Stop system . . . . . . . . . . . . . 87
E nter ing cha racters/numbers (speller) . . . . 162
Enter ing letters (speller) . . . . . . . . . . . . . . . 162
E n terta inment s liding me nu . . . . . . . . . . . . 160
E ntry/ex it lighting . . . . . . . . . . . . . . . . . . . . . 56
Environment Proper disposal of drained engine o il ... .
Unleaded fuel . .. ........... .. .. .... .
E S C
.. .. .. .. ... .. .. ..... ... .. .. .... .
Hill descent assist ... .... ... .. .. .... .
Offroad mode ... .. .. .... ... .. .. .... .
Sport mode 328
315
1 46
148
147
147
E v asive steering suppo rt . . . . . . . . . . . . . . . 12 1
Event Data Recorder (EDR) . . . . . . . . . . . . . 153
Expanded view . . . . . . . . . . . . . . . . . . . . . . . . 1 5
E xterio r ligh ting . . . . . . . . . . . . . . . . . . . . . . . 54
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . 58
E xternal voice operat ion.... ... .. .. .... . 173
Index
F
Factory default settings
Multi Media Interface . . . . . . . . . . . . . . . . 249
Fader (sound) . . . . . . . . . . . . . . . . . . . . . . . . 252
Fastening Booster seats . . . . . . . . . . . . . . . . . . . . . . . 305
Convertib le child safety seats . . . . . . . . . . 303
I n fan t seats . . . . . . . . . . . . . . . . . . . . . . . . 301
Fast forwarding/rewind ing (a udio/video
file) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
F ast forwarding ( aud io/v ideo file) . . . . . . . . 236
Fast route
Favorites Media 211
239
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 206
Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . 180
F ile formats (media drives) . . . . . . . . . . . . . 242
Floor ma ts ..... ... .. ................ .
Foot peda ls . .... .. ................. . . 259
259
F o r the s ake o f th e e nv ironmen t
E nvironmenta lly-friend ly driving . . . . . . . . 80
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Leaks ... .. .... .. .. ... .. ..... ... .. .. 324
Warming up the engine . . . . . . . . . . . . . . . . 83
F ree text search . .. .. .. .
............ ..
Media .. .. .... .. .. .... . ..... ... .. ..
Navigation .... .. ... .. .. ..... ... .. . .
Radio
. . .. .. ' . .. .. ... .. ..... ... .. . .
Telephone . .... .. ................. . .
F ree ze p ro tect ion 164
2 38
205
223 184
Coo lant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 9
Freq uency band . . . . . . . . . . . . . . . . . . 222, 225
Front airbags Desc ription . . . . . . . . . . . . . . . . . . . . . . . . . 275
How they work . . . . . . . . . . . . . . . . . . . . . . 281
F rontal collisions and the laws o f physics . . 264
Front passenger 's doo r eme rgency locking . . 42
Front seats Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Child restra ints in the front seat . . . . . . . . 272
also refer to Seats . . . . . . . . . . . . . . . . . . . . 65
Fuel Additives
.. .... .. ................. .. 315
B lended gasoline . . . . . . . . . . . . . . . . . . . . 315
Current consumpt io n . . . . . . . . . . . . . . . . . .
17
D iesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
391

Index
Fue l filler neck . . . . . . . . . . . . . . . . . . . . . . 317
F ue l gauge . . . . . . . . . . . . . . . . . . . . . . . 10, 12
Fue l tank capac ity . . . . . . . . . . . . . . . . . . . 381
Gasoline . .. .. ...... ......... .... ... 315
Gasoline additives . . . . . . . . . . . . . . . . . . . 316
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 315
Recommendation . . . . . . . . . . . . . . . . . . . . 315
Saving fue l . . . . . . . . . . . . . . . . . . . . . . 80, 134
Fueling Fue l gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fuel tank capac ity . . . . . . . . . . . . . . . . . . . 381
O pening the fuel fille r door . . . . . . . . . . . . 317
Fuses Assignment . . . . . . . . . . . . . . . . . . . . . . . . 370
Replac ing . . . . . . . . . . . . . . . . . . . . . . . . . . 369
G
Garage doo r opener
refer to Homelink . . . . . . . . . . . . . . . . . . . . 52
Garment hoo ks . . . . . . . . . . . . . . . . . . . . . . . . 69
Gas discharge lamps . . . . . . . . . . . . . . . . . . . 373
Glossary of tire and loading terminology .. 336
Glove compartment . . . . . . . . . . . . . . . . . . . . 69
V al et par kin g f unction . . . . . . . . . . . . . . . . . 5 1
Gross Vehicle Weight Rat ing (GVWR) . . . . . 380
H
Handsfree . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
H ead -up display . . . . . . . . . . . . . . . . . . . . . . . 24
H eadlight range control system . . . . . . . . . . 54
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
C lean ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
H eadlight range control system . . . . . . . . . 54
Washer system . . . . . . . . . . . . . . . . . . . . . . 60
Head restraints . . . . . . . . . . . . . . . . . . . . 66, 25 7
Adj usti ng . . . . . . . . . . . . . . . . . . . . . . . . . . 257
H ea ting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
H eavy clothing and safety belts . . . . . . . . . . 265
High beams . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Hi ll descent ass ist. . . . . . . . . . . . . . . . . . . . . 14 8
Hi ll descent control . . . . . . . . . . . . . . . . . . . . 94
H ill hold ass ist . . . . . . . . . . . . . . . . . . . . . . . . 89
also refer to Hill hold ass ist . . . . . . . . . . . . 89
H ome address .. .. .. .............. 206, 2 12
392
Homelink . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Hor n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
How are child restraint system anchors relat-
ed to c hild safety . . . . . . . . . . . . . . . . . . . . . 309
How many a irbags does my vehicle have? . . 278
How safety belt pre tensioners work . . . . . . 269
I
Imbalance (whee ls) . . . . . . . . . . . . . . . . . . . 342
Immobilize r . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Important things to do before dr iv in g . . . . 254
Importing and expo rting (contacts) . . . . . . 185
I mprope rly wo rn safety bel ts . . . . . . . . . . . 269
Ind icator lights . . . . . . . . . . . . . . . . . . . . . . . . 25
Airbag system . . . . . . . . . . . . . . . . . . . . . . 283
PASS ENG ER A IR BAG . . . . . . . . . . . . . . . . . 283
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . . 301
I np ut
U sing the M MI touch . . . . . . . . . . . . . . . . . 158
U sing the speller . . . . . . . . . . . . . . . . . . . . 162
I np ut level (media) . . . . . . . . . . . . . . . . . . . . 239
Inspection interva l . . . . . . . . . . . . . . . . . . . . 333
Installing the upper te ther s trap on t he an ­
c h o rage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Instrument cluster . . . . . . . . . . . . . . . . . . . . . 10
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Instrument illumination . . . . . . . . . . . . . . . . 58
Interior lighting . . . . . . . . . . . . . . . . . . . . . . . 57
Internet
refer to Aud i connec t (Infotainmen t) . . . . 188
Internet radio . . . . . . . . . . . . . . . . . . . . . . . . 232
Interval mode (wipers) . . . . . . . . . . . . . . . . . . 60
i Phone
refer to Aud i m usic interface . . . . . . . 233, 234
J
Jukebox 229
Jump-start ing . .. .. .. .. .. ........... .. 374
Jump start cable . .. .. .. .. ........... .. 375