2015 AUDI A4 steering wheel

186 Intelligent technology
distance detected to the vehicle ahead is too
smal l.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the drive
wheels begin to spin and adapts the fo rce to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills .
Electronic differential lock (EDL)
The EDL brakes wheels that are spinn ing and
transfers the d rive powe r to the other drive
wheel or whee ls if the vehicle is equipped with
a ll-wheel drive* . This function is not avai lab le
at higher speeds.
I n extreme cases , EDL automat ica lly switches
off to help keep the brake on the braked whee l
from ove rheating . EDL wi ll switch on again au­
tomatically when conditions have returned to
normal.
Steering recommendation
The ESC helps to stabilize the ve hicle by
changing the steering torque.
In vehicles with dynam ic steeri ng*, ESC also
he lps to stabilize the stee ring in critical s itua­
tions.
Electronic interaxle differential lock* /
selective wheel torque control*
The electronic interaxle d ifferential lock (front
wheel drive) or the select ive wheel torque
con trol ( all wheel d rive) oper ates when driving
through curves . The front whee l on the inside
of the cu rve or both whee ls on the inside of
the curve are b raked se lectively as needed.
This a llows more prec ise driving in c urves. The
applicable system may not activate when driv­ ing i n wet or snowy conditions.
A WARNING
- The ESC and its integrated systems can­
not overcome the laws of physics. This is
especially important on slippery o r wet
roads . If the systems begin acting to sta·
b iliz e your veh icle, you s hou ld immed i­
a tely c ha n ge your speed to match the
road and traffic cond itions. Do not let
the increased safety provided by these
systems tempt you to take risks. Do ing
so will increase the risk of a loss of vehi­
cle control, collision and serious personal
inj uries.
-Always adapt your speed to road, traffic and weather conditions. The risk of los­
ing control of the vehicle increases when
d riving too fast, espec ially through
curves and on slippe ry or wet roads, and
when dr iv ing too close to vehicles up
ahead. The ESC a nd its integrated sys­
tems canno t always p reven t collisions -
there is still a risk of acc idents!
- Always accelera te wi th spe cial care on
even, smooth s urfaces such as those that
are wet or covered with ice and snow.
The drive wheels can spin even with these assistance systems that cannot al­
ways he lp to red uce the risk of loss of ve­
h icle control.
(D Tips
- ABS and ASR only work cor rectly when
all four wheels are equipped with identi­
cal tires. D ifferent tire sizes can lead to a
reduction in engine power .
- Yo u may hear noises when the systems
descr ibed are working.
- If the ind icator light
DJ or ml (USA
mode ls)l iiJ (Canada models) appears,
there may be a malfunction<=>
page 18,
<=>page 19 .

190 Intelligent technology
overheat re ducin g the effectiveness of
the ent ire brake system.
- Failure of one brake circuit will impair
the braking capability resulting in an in­
creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to the near­ est author ized Audi dealer or qualified
workshop .
- Never let the vehicle ro ll to a stop w ith
the engine shut off.
- If the brake booster is not working, the
brake pedal must be pressed conside ra­
bly harder to make up for the lac k of
booster assistance.
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps
the driver when steering.
Power stee ring adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Steering defective! Do not drive vehicle!
If this ind icator lig ht tu rns on and stays on
an d th is message appears, t he power steer ing
may have f ailed.
D o
not cont in ue d riving. See yo ur autho rized
Aud i deale r or a q ua lifi ed r epa ir facility for as­
sistance.
'1:I Dynamic steering : System fault! You can
cont inue driv ing
If the indicator light t urns on and the mes­
sage appears, the steer ing may be more diffi­
cul t to move or more se nsitive than usual. The
steer ing wheel may also be at an angle whe n
d riving straight .
Drive s low ly to your author ized Audi dealer or
q ua lified workshop to have the malfunction
cor rected .
'y.ij Dynamic steering: initializing
If this driver message appears and the indica ­
tor light is f lashing on the instrument panel,
dynam ic steer ing * is being re in it ia lized. After
starting the engine, the steering wheel will move s light ly. Re- initialization might be nec­
essary if the steering wheel was moved hard
to the left and right wh ile the vehicle was not
moving . Th e display goes out as soon as ini ti­
ali za tion is complete.
_& WARNING
Ha ve the dy namic stee ring * system m al­
f u nction repa ired as soon as possib le by an
a uthorized Audi dea ler or qua lified work ­
shop -risk of acc ident !
@ Tips
-If the . or '1:I indic ator li ght only s tays
on fo r a shor t time, you m ay continue
dr iving.
- T he dynamic s teering * stabi lit y syste ms
are no t av ail ab le in the even t of a system
ma lf u nction.
- F or ad di tion al information on dynamic
steering *, refe r to
¢page 115 .
-
Driving with your
quattro
App lies to vehicles: wi th all-w hee l drive
With a/I-wheel drive, all four wheels are driv­
en .
General information
With a ll-wheel d rive, power is distr ib uted to
all four wheels. This happens automatically
depending on your driving style and the road
co ndit ions at the time . See also
¢ page 185.
A center d ifferential distributes the driving
power variably to the front and rear axle. It
wor ks together with selective w heel torque
co ntrol, wh ich activates when dr iving t hrough
c ur ves
c::;,page 186. With the sport differe n­
t ia l* , pow er d istr ibut ion to the rea r wheels is
variable a nd can be adjusted w ith drive se lect
c::;, page 115. .,..

-If you notice unusual vibra­tion or if the vehicle pulls to one side when driving, al­
ways stop as soon as it is safe to do so and check the
wheels and tires for dam­ age.
(D Note
-Please note that summer and winter tires are de­
signed for the conditions
that are typical in those sea­
sons. Audi recommends us­ing winter tires during the
winter months. Low tem­ peratures significantly de­
crease the elasticity of
summer tires, which affects
traction and braking ability.
Tires and wheels 229
If summer tires are used in
very cold temperatures, cracks can form on the tread bars, resulting in perma­
nent tire damage that can
cause loud driving noise and unbalanced tires. Audi is not
responsible for this type of
damage.
-Burnished, polished or chromed rims must not be used in winter road condi­
tions. The surface of the
rims does not have suffi­
cient corrosion protection
for this and could be perma­
nently damaged by road salt
or similar substances.
•
•
'
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power
steering, power brakes, power
windows, power seats, radio, and heater, to the extent that
these items are available as fac­
tory-installed equipment (whether installed or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent. Numbers of 55 or lower indi­
cate a low sidewall for im­ proved steering response and
better overall handling on dry
pavement.

246 Tires and whee ls
symbols) indicate the positions
of the tread wear indicators .
Worn tires must be replaced. Different figures may apply in
other countries
s> .1:. .
Tire pressure
Incorrect tire pressure causes
premature wear and can cause
sudden tire blow-out. For this
reason, tire pressure must be
checked at least once a month
r::::>page239 .
Driving style
Driving fast around curves,
heavy acceleration and hard
b raking increase tire wear .
Rotating tires for more even
wear
For all four tires on your vehic le
to have the same service life,
we recommend that the front and rear tires are rota ted ac­
cord ing to the tire man ufactur ­
er's s uggested tire rotat ion in­
tervals. Please remember the
following:
-Tire rotation intervals may dif­ fer from the vehicle service in ­
tervals outlined in your Main­
tenance and Warranty Book­ let . -
The longer one tire is used in
o ne location on the ve hicle,
the more it wears at certain points; therefore, we recom­
mend tha t you follow the tire
manufact ure r's suggested tire
rotat ion interva ls .
- Vehicles with front -wheel
drive expe rience more tread
wear on the front whee ls com­
p ared to all wheel drive (q uat­
tro).
-Please rota te t ires as shown
r::::> fig . 192 .
-Extra care must be taken when
rotat ing direction-speci fic
tires c:> page 26 7.
Wheel balancing
The wheels on new vehicles are
balanced . Howeve r, various sit ­
uations d uring everyday drivi ng
can cause them to become un­
balanced , resulting in vibra ­
tions you can usu ally feel
through the s teering wheel.
Unbalanced wheels must be re­
ba lanced to avoid excessive
wea r on steering, suspension
and tires. A wheel must also be
rebalanced when a new tire is
insta lled .

'"" N
0 ::.,: co ,...., \!) ..,.,
,...., ..,., ,....,
-the spa re tire* /inflatable spare tire* is
mounted.
Warning symbols
[IJ Loss of pressure in at least one tire¢,&. .
Check the tire or tires and replace or repair if necessa ry. The indicator light
[IJ in the instru ­
ment cluster also illuminates
¢page 13.
Check/correct the pressures of all four tires
and resetTPMS via radio or MMI*.
mm (T ire Pressure Monitoring System) Ti re
pre ssure: S ystem m alfuncti on!.
1tE appea rs after sw itching the ign it ion on
or while d rivi ng and the ind icator light
[IJ in
the instrument cluster blinks for approxi­ mately one minute and then stays on, there is
a system malfunction. Attempt to store the
correct t ire pressure ¢
page 259. If the indi­
cator light does not turn off or if it turns on
shortly thereafter, immediately drive your ve­
h icle to an authorized Audi dealer or author­
ized repair facility to have the malfunction
corrected.
.&, WARNING
- If the t ire pressure indicator appears in
the instrument cl uster d isplay, one or
more o f your tires is significantly under­
inflated. Reduce your speed immediately
and avoid any hard steering or braking
maneuvers. Stop as soon as possible and
check the t ires and the ir pressures. In­
flate the tire pressure to the proper pres­
sure as indicated on the vehicle 's t ire
pressure label~
page 234 . Driving on a
significantly under-inflated tire ca uses
the tire to overhea t and can lead to tire
failure. Under-inflation also is likely to impair the vehicle 's handling and stop ­
ping ability.
- The driver is responsible for mainta ining
the correct tire pressures. You must check the tire pressures regularly .
- Under certain cond itions (such as a spor ­
ty driving style, winter conditions or un­ paved roads), the pressure monitor indi­
cator may be de layed .
Tire s an d wheel s 259
-Ask your a uthorized Audi dea ler if run­
flat tires may be used on your vehicle.
(D Tips
- The tire pressure mon itoring system may
stop working when there is an ESC ma l­
function.
- Using snow chains may res ult in a system
ma lfunction.
- The tire pressure mon itor ing system on
your Audi was deve loped using tires with
the "AO" or "RO" identification on the
tire s idewall
~ page 248. We recom­
mend us ing these tires.
Reset tire pressure monitoring system
App lies to vehicles: with tire pressure mon itor ing system
If the tire pressure is adjusted, wheels ore ro­
tated or changed, the TPMS must be reset via
radio or MMI*.
... Before storing the new tire pressures, check
that the current pressures on all four tires
correspond to the specified va lues and
adapt the pressures to the current load
¢ page 234.
.,. Switch on the ignition.
.,. Select: the
I CARI funct io n button > Tir e pre s­
s ure mon itoring
> Store now . Or
.,. Select: the
I CARI fu nct ion button > Car sy s­
tem s*
contro l button > S erv icing & che cks >
Tire pres sure mon itor in g > Store tire pre s­
s ures
> Yes, sto re now .
(D Tips
Do not store the tire pressure if there are
snow chains on the tire . Otherwise, a sys­
tem mal function may occur.
•
•

29 6 Index
Parking system ........... ... .. .... . 118
Rear .. .... ................ ..... . 118
Rear, with rear v iew camera ... .. .... . 120
Park ing system (rear) ................ 118
Ad justing the warning tones .. .. .... . 119
Parking system (rear, w ith rear view cam-
era) Park ing mode 1 ................... 122
Parking mode 2 ................... 123
Safety precautions ................. 120
Switching on/off ............. .... . 121
Switching rear view camera on/off ... . 124
Part it ion net . . . . . . . . . . . . . . . . . . . . 72, 73
Parts replacement .................. 285
Pass-t hrough ............... ... .... .. 75
PASSENGER AIR BAG OFF light ... .. .. . 155
Passive safety system ........... .... . 126
Pedals .. .. .. ................ ... .. . 131
Physical principles of a frontal collision 137
P lastic parts
C leaning ... ................ ..... . 204
Polishing .. .... .............. ...... 204
Pollutant filter (automatic A/C system) .. 78
Power seat adjustment . . . . . . . . . . . . . . . . . . . . 62
Power locking system . . . . . . . . . . . . . . . . . 31
E mergency locking .................. 37
Power windows .................... 42
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Selective unlock feature .... ..... .. .. 36
Settings ... ................ ..... .. 36
Sliding/tilting sunroof ............... 42
Power steering
refer to Electro-mechanical power as-
sist .. ... ................ ... .... . 190
Power window
Conven ience opening/closing . .. .... .. 42
Power windows .............. .. .... .. 42
Child safety locks .............. ..... 42
Malfunct ions ............. .... ..... 43
Pregnant women
Special considerations when wearing a
safety belt ............... ... .. .. . 141
Proper occupant seating positions .... . 127
Proper safety belt pos it ion . . . . . . . . . . . . 140 Proper
seating position
Front passenger .. ................ . 128
Occupants ... .. .. .. .............. . 127
Rear passengers .. ............. .... 129
Protecting ......................... 204
Protective liner . . . . . . . . . . . . . . . . . . . . . . 76
Q
Quartz clock . . . . . . . . . . . . . . . . . . . . . . . . 12
quattro
refer to all-wheel drive .......... ... 190
Question What happens to unbelted occupants? 137
Why safety belts? . . . . . . . . . . . . . . . . . 136
R
Radiator fan .. .. .. ............. .... 220
Rain/light sensor
Headlights ...... ............ .... .. 49
Intermittent (windshield w ipers) ...... 55
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Reading lights . . . . . . . . . . . . . . . . . . . . . . . 52
Rear door sun shade . . . . . . . . . . . . . . 54, 55
Rear fog lights .. .. ... .... ........ .. . 49
Rear lid Automatic operation ................ 39
Emergency re lease . . . . . . . . . . . . . . 40,
41
Escape handle ... ............. ..... 41
Opening and closing .............. .. 38
Rear light Defective . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rear view camera
Parking mode
1 ................... 122
Parking mode 2 .. ................ . 123
Rear view mirror ................... .. 53
Rear window heating ............ ..... 80
Rear window sun shade . . . . . . . . . . . . . . . 55
Rear window washer system ......... .. 55
Recircu lation mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Refuell ing ......................... 210
Release lever for hood ............... 212
Remote contro l
Garage door opener (Home link) ...... . 45

298 Index
Selector lever emergency release ..... . 100
Service and disposal Safety belt p retens ioner ... .. .. .... . 143
Service interval display ................ 28
Service position
refer to Replac ing wiper blades ... .. .. 57
SET button . . . . . . . . . . . . . . . . . . . . . . . . . 11
Shift indicator (efficiency program) ...... 27
Shutting down vehicle ............... 195
Side airbags Descr ipt ion . .............. ... .. ... 159
H ow they work ......... .. .. .. .. .. . 160
side assist
Adjusting the brigh tness . . . . . . . . . . . . 113
Sensor range ................. .... 112
Side assist Activating and deactivating . .. .. .. .. . 113
Cleaning the sensors ............... 203
Descr ipt ion .............. .. .. .. .. . 111
Side curtain airbags ....... ... .. .... . 162
Description .... ........... ... .... . 162
Howtheywork ............. .. .... . 163
Safety instructions .......... .. .... . 163
Side marker lights .......... ... .... .. 49
Ski sack .... ................... ... .. 75
Sliding/tilting sunroof
Conven ience opening/closing . .. ...... 42
Emergency closing ........ .. .. .. .. .. 44
Opening and closing ....... ... .... .. 43
Sunshade .................... ... .. 43
Snow chains ............... ... .... . 255
Socket 12-vo lt . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Sound system display . . . . . . . . . . . . . . . . . 23
Sources of informat ion about child re-
straints and their use ................ 183
Spare tire .. .. ............. .. .. .. .. . 260
Speedometer .... ...... ..... .. .. .. .. 12
Speed rating letter code ... .. .. .. .... . 250
Speed warn ing system .......... .. .... 89
Sport differential .......... .. .. .. .. . 115
Indicator lamp . . . . . . . . . . . . . . . . . . . . . 22
S TART ENG IN E STOP b utton (convenience
key) . ..... .. ... .. ..... ... .. .. .... .. 86
S TART ENGIN E STOP button (Conven ience
key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Starting from rest
.. ... .. ..... .... . .. . 88
Starting
off w ith a trailer ............ .. 89
Starting the engine . . . . . . . . . . . . . . 82, 85
Stee ring
Locking the steering . .. ..... ... .. .. . 82
olso refer to Electro -mechanica l power
assist . ... .... .. .. ... ..... ... .. .. 190
Stee ring wheel
Adjust ing steering col umn ........... 82
Indicator light . . . . . . . . . . . . . . . . 18, 190
Steps for determin ing correct load limit . 244
Stopping the engine . . . . . . . . . . . . . . 84, 86
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Storage compar tments . . . . . . . . . . . 68, 76
S tronic . ... .... .. .. .... .... ... .. .. . 93
Se lector lever . . . . . . . . . . . . . . . . . . . . . . 94
S tronic transmission Emergency re lease ... .......... .. .. 100
Launch Control Prog ram ..... ... .. .. . 99
Su nroof ...... .. .. .. ... ....... ... .. . 43
also refer to Slid ing/ti lting sunroof 43, 44
Sun shades
Rear doors . . . . . . . . . . . . . . . . . . . . 54, 55
Rear window . . . . . . . . . . . . . . . . . . . . . . . 55
Sun visors . ..... .. .. ... ..... ... .. .. . 54
Symbols
refer to Warn ing/ indicato r lights . .... . 13
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 11
Tail lights
Cleaning ......................... 203
T echnical modifications .. ..... ... .. .. 286
T ether anchors .. .................. . 181
Tether strap 181
T extiles
Cleaning .. .. .. .. ... .......... .... 205
T he first 1 ,000 miles (1,500 km) and after-
wards .. ... ... .. .. .. ... ....... ... .. 193
Tie-downs . . . . . . . . . . . . . . . . . . . . . 74, 133
t ipt ron ic . .. .. .. .. ............. .. ... 93
Automa tic Shift Lock (ASL) ... ... .. .. . 95
Driving ... .... .. .. ... ..... ... .. .. . 95
Emergency mode ... .... .... ... .. .. . 99
Manua l shift program .......... .... . 98
Se lector lever .. .. ... .......... .. .. . 94