2015 AUDI S7 power steering

@ Tips
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Electronic Stabilization
Control (ESC)
Description
ESC helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidd ing and loss of veh icle control. It works
only when the eng ine is running. ESC detects
certain difficult driv ing s ituations, including
when the vehicle is beginning to spin (yaw)
out of cont ro l and helps you to get the vehicle
back under control by select ively brak ing the
wheels, and/or red ucing engine powe r and
p roviding steering assistance to help hold the
ve hicle on the driver's intended course . The in­
dicator light
m in the instrument cluster
blinks when ESC is taking action to help you
control the vehicle.
ESC has limitations.
It is important to remem­
ber that ESC cannot overcome the laws of
phys ics. It will not a lways be able to help out
under all conditions you may come up against.
For example, ESC may not always be able to
h elp you master situat ions where there is a
sudden change in the coefficient of fr iction of
the road surface. When there is a sect io n of
d ry road that is s udden ly cove red with water,
slush o r snow, ESC canno t perform the same
way it would on the dry su rface.
If the vehicle
hydroplanes (rides on a c ush ion of wate r in­
stead of the road surface), ESC wi ll not be
ab le to he lp you steer the veh icle because con-
Int ellig ent technolog y 195
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
D uring fast corner ing, particular ly on wind ing
roads, ESC cannot always deal as effectively
with difficult dr iv ing s ituations than at lower
speeds. When towing a trailer, ESC is not able
to help you regain control as it would if you
were not tow ing a trailer.
Always adjust your speed and driving style to road, traffic and weather conditions . ESC can­
not override the vehicle's physical lim its, in­
crease the availab le tract ion, or keep a veh icle
o n the road if road departu re is a result of
driver ina ttent io n. Instead , ESC imp roves the
poss ibility of keep ing t he vehicle under con­
trol and on the road during extreme maneu­
vers by using the driver's steering i nputs to
help keep the vehicle go ing in the intended di­
rect ion. If you are traveling at a speed that
causes you to run off the road before ESC can
provide any assistance, you may not experi­
ence the benefits of ESC.
ESC is switched on all the time. In certain sit­
uat ions when you need less traction, you can
switch off ASR by pressing the butto n
[ill
~ page 197, fig. 182. Be su re to switch ASR
o n again when you no longer need less trac­
tion.
The following systems are integrated in the
ESC:
Anti-lock bra king sy stem (ABS )
ABS prevents the whee ls from locking up
when brak ing. T he vehicle can st ill be steered
even dur ing hard braking. App ly steady pres­
su re to the brake peda l. Do not pump the ped­
al. A pulsing in the brake pedal ind icates that
the system is helping you to brake the veh icle .
Brake assi st system
The brake ass ist system can decrease braking
distance. It increases brak ing power when the
drive r presses the brake peda l quickly in emer­
gency s ituations. You must press and hold the
brake pedal unti l the s ituation is over. In
vehicles wi th adap tive c rui se control*, the
brake assis t system is more sensitive if the
•
•

196 Intellig ent technolog y
distance detected to the veh icle a head is too
smal l.
Anti -slip regulation (ASR )
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills.
Electronic differential lock (EDL )
The ED L brakes wheels that are spinn ing and
transfers the d rive power to the other wheels.
This f unct ion is not availab le at h igher speeds.
In extreme cases, EDL automat ically switches
off to help keep the brake on the braked whee l
from overheating. EDL w ill switch on aga in au­
tomatically when conditions have returned to norma l.
St eering recommendat ion
The ESC helps to stabilize the vehicle by
cha nging the steering to rque.
In vehicles with dynam ic steering*, ESC also
helps to stabilize the steering in critical s itua­
tions .
Select ive w heel to rque control
Selective wheel torque control is used when
driving on curves . The front wheel on the in­
side of the curve or both wheels on the inside
of the curve are braked selectively as needed.
This a llows more prec ise driving in curves. The
applicable system may not activate when d riv­
ing i n wet or snowy conditions.
.&_ WARNING
- T he ESC and its integrated systems can­
not overcome the limits posed by natural physical laws
. This is especially impor­
tant on slippery or wet roads. If the sys­ tems beg in acting to stabilize your vehi­
cle, you should immediately change your
speed to match the road and traffic con­
d itions . Do not let the increased safety
p rovided by these systems tempt you to
take risks. Do ing so will increase the ri sk
of a loss of veh icle cont ro l, collision and
serio us personal inj uries.
- Always adapt your speed to road, traffic
and weather conditions . The risk of los ­
ing control of the vehicle increases when
driving too fast , especially through
curves and on slippery or wet roads, and
when dr iv ing too close to vehicles up
ahead . The ESC and its integrated sys­
tems cannot a lways prevent collisions -
there is still a risk of acc idents!
- Always accelerate with special care on
even, smooth su rfaces such as those that
are wet or covered with ice and snow .
The drive wheels can spin even w ith
these assistance systems that c annot al­
ways he lp to red uce the risk of loss of ve­
h icle control.
(D Tips
- ABS and ASR only wo rk correctly when
all four wheels are equipped wi th iden ti­
cal tires. D ifferen t tire sizes can lead to a
reduction in engine power.
- Yo u may hear noises when the systems
descr ibed are workin g.
-If the ind icator light DJ or Ea (USA
mode ls)/ lCO j there may be a malfunction~
page 19,
<=>page 19.

200 Intelligent technology
nearest Audi dealer or qualified work­
shop.
- Never let the vehicle ro ll to a stop with
the engine shut off.
- If the brake booster is not working, the
brake pedal must be pressed considera­
bly harder to make up for the lack of
booster assistance.
Electromechanical
power assist, dynamic
steering
The electromechanical power assist helps the
driver when steering.
Power steering adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Steering defective! Stop the vehicle
If this indicator light turns on and stays on
and this message appears, the power steering
may have failed.
Do
not continue driving. See your authorized
Audi dealer or other qualified repair facility
for assistance.
l>:r-ij Steering: System fault You can continue
driving
If the indicator light turns on and the mes­
sage appears, the steering may be more diffi­
cult to move or more sensitive than usual. The
steering wheel may also be at an angle when
driving straight.
Drive slow ly to your authorized Audi dealer or
qualified workshop to have the malfunction
corrected.
'Tl Dynamic steering: Initializing
If th is driver message appears and the ind ica­
tor light is flashing on the inst rument panel,
dynamic steering* is be ing reinitialized. After
starting the engine, the steering whee l wi ll
move slightly. Re-initialization might be nec­
essary if the steering wheel was moved hard
to the left and right while the vehicle was not moving. The display
goes out as soon as initi­
alization is complete.
Drive slowly to your authorized Audi dealer or
qualified wo rkshop to have the malfunct ion
corrected.
A WARNING
Have the dynamic steering * system mal ­
function repaired as soon as possible by an
authorized Audi dealer or qualified work­
shop -risk of accident!
(D Tips
If the . or '1:I indicator light only stays
on for a short time, you may continue driv­
ing.
- The dynamic steering* stability systems
are not availab le in the event of a system
malfunction .
- For additional information on dynamic
steering*, refer to¢
page 102.
Driving with your
quattro
-
With all-wheel drive, all four wheels ore driv­
en .
General information
With all-wheel drive, power is distributed to
all four wheels. This happens automatically
depending on your driving style and the road
conditions at the time. See also
¢page 195.
A center differential distributes the driving
power variably to the front and rear axle.
It
works together with selective wheel torque
control, which activates when driving through
curves¢
page 196. With the sport differen­
tial*, power distribution to the rear wheels is
variable and can be adjusted with drive se lect
¢ page 102.
The all-wheel drive concept is des igned for
high eng ine power. Your veh icle is except ion­
ally powerfu l and has excellent driving charac­
teristics both under normal driving conditions
and on snow and ice. Always read and follow
safety precautions ¢,&. . .,.

242 Tires and wheels
-If you notice unusual vibra­
tion 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.
0 Note
-Please note that summer and winter tires are de­
signed for the conditions
that are typical in those sea­
sons. Audi recommends us­
ing winter tires during the
winter months. Low tem­ peratures significantly de­
crease the elasticity of
summer tires, which affects
traction and braking ability. 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.
...

282 Fuses and bulbs
No . Equipment Amps
4 Suspension control system sen-
5
sor
5 Electron
ic Stabilization Control
5
(ESC) mod ule
6 Climate
control
5
7 Adaptive cruise control 10
8
Airbag control module, front
5
passenger's seat sensor system
9 Gateway 5
Garage door opener (Homelink),
10 night vision system contro l 5
module
11 Image processing (active
lane
10
ass ist, adaptive cruise control)
12 Dynamic steering 5
13 Terminal 15
in the instrument
15
panel
14 T
ermina l 15 in the luggage com-
partment 30
15 T
erminal 15 (engine)
15
16 Starter 40
Fuse panel @ (brown)
No . Equipment Amps
1 Gateway
5
2 Climate control 10
E lec tronic Stabilization Contro l
10
3
(ESC) module
4 Front door (driver's
side)
30
5 Power seat adjustment (driver's
7,5
seat)
6 Dynamic steering
35
7 Su nroof 20
Rear door control module (driv- 15
8
er's side)
9 Lumbar support (Front passen-
5
ger seat)
10 Tire pressure monitoring system
5
11 Su
nroof, rear spoiler (Sportbac k)
20
12 Driver door
control module
15
Fuse panel© (red)
No . Equipment
2 Fuel pump
3 Brake light sensor/brake pedal
sensor system
4 AdBlue control module (Diesel)/
Engine acoustics
5 Left rear door contro l modu le
6 Power
seat adjustment (pas-
senger's seat)
7 Horn
8 Windshield wiper motor
9
Light/rain sensor, heater for vid-
eo camera in windscreen
10 Lumbar support (dr iver seat)
11 Front
passenger door control
module
12 Right rear door control mod ule
Front passenger side cockpit fuse
assignment Amps
25
5/5
5/7,5 30
7,5 15
30
5
5
15
15
Fig. 220 Front passenger side cockpit: fu se pane l w ith
plastic bracket
Fuse panel @ (black)
No. Equipment Amps
1 Head-up Display
5
2 MMI Display 5
3 CD/DVD changer
5
4 MMI unit/dr ives 7,5
5 Chip card reader (not
in all coun-
5
tries)
6 Instrument cluster
5
7 Steering column switch module 5

M N <( I.J "". rl I.O
"' rl
"' rl
No. Equ ipment Amps
8
Headlight range adjustment/ 5/7,5
adaptive lighting system
10
Left headlight (headlight with 7,5 adaptive light)
11 Supplementary heater s
Fuse p anel @ (b ro w n)
No . Equipment Amps
1 Climate control 10
2
Climate control system blower 40
3
Diagnostic interface 10
4
E lectrical ignition lock s
5
Power steering column adjust-
ment
s
6 Steering column switch module 10
7
Power steering column adjust-
ment
25
8 Light switch 5
Luggage compartment fuse assignment
Fig . 221 Luggage compa rtmen t: fuse panel wit h p las ­
tic bracket
Fuse p anel @ (black )
No. Equipment Amps
4 Electromechan ical parking brake 30
5
Electromechanical parking brake 30
6
Front door (front passenge r's
30 s ide)
7 Rear exterior light ing 30
Rea r sun shade, closing aid, lug-
8
gage compartment lock, con-
20 venience key, START ENGINE
STOP, fuel filler door
Fu se s and bulb s 283
No. Equipment Amps
9 Power seat adjustment 15
10
Parking system 5
11
Rear seat heating 30
Fu se p an el@ (r e d )
No . Equipment Amps
1 Left belt tensioner 25
2
Right belt tensioner 25
3
Socket/cigarette lighter 20
4
Socket 20
5
Electromechanical parking brake 5
6 adaptive air suspension 15
7
Rear door (front passenger's
30 side)
8 Rear exterior lighting 30
9
Luggage compartment lid con-
30 trol modu le
10 Telephone 5
11
Sound amplifier 30
12
Rear spoiler (Sportback) 20
Fuse panel© (brown)
No . Equ ipment Amps
1
Radio receiver, Sound amplifier/
30/20
MMI unit/drives
2 Tank leak detection system 5
4
AEM control module/battery 10/15
module
6 Battery fan 35
7
Rad io receiver 7,5
8 Rear Seat Entertainment 7,5
9
Automatic d imm ing interior 5/15
rearview mirror/battery module
10 Parking system 5
Fu se pan el@ (gr ee n)
No . Equipment Amps
1 pre sense 5
2
Electromechanical parking brake 5
3
adaptive air suspension 5
4 Automatic transmission 7,5

302 Index
Daytime running lights .... .. .. .. .... . . 44
Declaration of compl iance
Adaptive c ruise control .... .. .. .... .
297
Aud i side assis t ... ... .... .. .. .. .. . 297
Cell phone package ... .... .. .. .... . 297
Convenience key ....... ... .. .. .... . 297
Electronic immobilizer ... .. .. .. .... . 297
Garag e door opener (Homelink) ... .. . 297
Remote control key ....... .. .. .. .. . 297
D ecorative parts/ trim
C leaning ... ... .. ..... ... .. .. .... .
214
DEF
What does t his mean when it appea rs in
the trip odomete r d isplay? . .. .. .. .. . .
27
De fective light bulb warning . . . . . . . . . . . 22
D efrosting (windows)
automatic climate control . ... ... ... ..
73
climate contro l . . . . . . . . . . . . . . . . . . . . . 71
Determin ing cor re ct load limi t ... .. ... 257
Diese l fuel . .. .......... ...... ... .. . 218
D iese l partic ulate fi lter . . . . . . . . . . 2 1, 205
D imensions .. ... . ...... ... .. .. .. .. . 292
Dimming the rearview mirror .. .. ...... 51
D isp lays
C leaning ... ... . ...... ... .. .. .... .
214
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Door/rear lid warning . . . . . . . . . . . . . . . . . 24
Doors
Power child safety loc k .. .. .. .. .... . .
4 0
D river information system
CD/radio display . . . . . . . . . . . . . . . . . . . .
24
D oor/ rear lid warning . . . . . . . . . . . . . . . 24
Exte rio r tempe rat ure d isplay . .. .. .. . . 24
On -boa rd compute r . . . . . . . . . . . . . . . . . 2 5
D river seating position . . . . . . . . . . . . . . . 129
drive select .... ........... .. .. .... . 102
adaptive a ir s uspension/sport . .. .... .
Adaptive dampers .......... .. .... .
Curve light ........... .... ... .. .. .
E ng ine sound ......... .... ... .. .. .
Safety belt tensioner .......... .. .. .
Sport differen tial ......... .. .. .. .. .
Driving safely 102 102
102
102
102
10 2
128
D riving through water . ... .. .. .. .... . 204
D . . . nvmg time .... .... ...... .. .. .. .. .. 25
Dup licate key . . . . . . . . . . . . . . . . . . . . . . . 31
D ust filter
refer to Poll utant fi lter . ..... ... .. .. . 69
Dynam ic steering
2 00
E
Easy entry feature . . . . . . . . . . . . . . . . . . . . 76
Efficiency program Fuel economy messages ........ .. .. .
26
Other equ ipment . ............. .... . 26
Electr ica l accessories (soc ke ts) . ... .. .. . 60
Electromechanical pa rking brake
Emergency bra king . .. ...... ... .. .. .
80
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 79
Parking . .. .. .. .. .. ........... .. .. . 79
Re leas ing and closing .. ..... .... . .. . 79
Starting assist ... .. .... .... ... .. .. . 80
Starting from rest . .... ..... ... .. .. . 80
Starting off w ith a trailer .......... .. . 80
Warning/ind icator lights ........ .... . 16
Elec tromechanica l power assist . ... .. .. 2 00
El ectronic d ifferential lock
Warning/ind icator lights ........... ..
19
Electronic differential lock (EDL) . . . . . . . 195
Warning/ind icator lights ........ .... . 19
Electronic immob ilizer . . . . . . . . . . . . 27, 32
Electronic power cont rol (EPC)
wa rning/indicator light ......... .... .
20
Electronic speed limiter .......... .... . 30
Elec tronic Stabilization Con tro l (ESC) . .. 195
Warning/ind icator lights ..... ... .. .. . 19
Emergency actuat ion
Doo rs .... .. .. .. .. ........... .... .
37
Power sunroof . .. ............. .. ... 42
Rea r lid ... .... .. .. .... . ... ... .. .. . 39
Em b k'
ergency ra 1ng . .......... ...... .. 80
Emergency flasher ... ... ..... ... .. .. . 45
Warning/ind icator lights .......... .. . 23
Emergency re le a se
Se lector lever .... .. .... .... ... .. ..
115
E mergency start ing ..... .. ... ..... .. 285
Emergency towing . ............. .... 287
E mergency wa rn in g triangle .... .. .. .. 2 73
Energy management .... .. ... ..... .. 201
Engine
Compartment .... .. ... ..... ... .. ..
227
Coolant ... .... .. ............. .... 231

306 Index
New tires and wheels
NHTSA 260
Contact ing ... ........... .... .... . 136
Night vision assistant . . . . . . . . . . . . . . . . 105
Cleaning camera lenses .. .. .. .. .. .. . 213
Nitrogen oxide (NOx) cata lytic converter
refertoAdBlue . ........... ... .... . 221
Number of seats ........... .. .. .... . 138
0
Occupant seating posit ions 129
Octane rating ............... .. .... . 217
Odometer . .. ............. .. .. .. .. .. 27
OFF (automatic climate control) . . . . . . . . 72
OFF (climate control) ........ ... .... .. 70
Oil
refer to Engine oil ........ .. .. .... . 227
On-board computer .......... .. .... .. 25
On-Board Diagnostic System (OBD)
Data Link Connector (DLC) ... ... .... . . 29
E lectronic speed limiter . . . . . . . . . . . . . . 30
Malfunction Indicator Lamp (MIL) . . . . . 29
Open doo r/hood/rear lid warning . . . . . . . 24
Opening Hood .. .. .. ................ ... .. . 225
Power windows ........ .. .. .. .. .. .. 40
Rear lid .. .. ............. .. .. .. .. .. 37
Sliding/tilting sunroof ....... .. .... .. 41
Operate your vehicle econom ically and
minim ize pollution .......... ... .. .. . 205
Other equipment (efficiency program) ... 26
Out let .. .. ............... .. .. .... .. 59
p
Paint damage ............. .. .. .. .. . 214
Paint No . .. ... ............ .... .. .. . 291
Parking ..... ................ ..... .. 79
Automatic transmission ............ 111
Valet parking ...................... 41
Parking brake ............. .. .. .... .. 79
also refer to Electromechan ical park ing
b rake .. .. ... ............ .... .. .. .. 79
Park ing system
Adjust ing the disp lay/warning tone .. . 126
C leaning sensors/camera lenses . .. .. . 213 Cleaning the
rear view camera ..... .. 118
Malfunction ..... ................ . 127
Parking system plus ................ 117
Peripheral cameras ............ .... 121
Rear view camera .............. .... 118
Trailer hitch ..... ................ . 127
also refer to Parking systems . . . 117, 118
Parking systems ... ................ . 116
Particle filter
refer to Diesel particu late filter .. .. .. . 21
Parts replacement . ................ . 296
Pass-through with ski sack ............. 67
PASSENGER AIR BAG OFF light .. .. .. .. 160
Passenger pro tection .............. .. 192
Passive safety system ................ 128
Pedals . ........ .. .. .............. . 133
Physical principles of a frontal collision 139
Plastic parts Cleaning .. .... .. ................ . 214
Polish ing . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Pollen filter
refer to Pollutant filter ......... .. .. . 69
Pollutant filter .... ............. .... . 69
Power locking system ................. 33
Locking/unlock ing the veh icle from in-
side .. .. .. .. .. .. .. .. ... ..... ... .. . 36
Selective unlock feature . . . . . . . . . . . . . 34
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Unlocking and locking vehicle .... .. .. . 34
Power seat adjustment Front seats . . . . . . . . . . . . . . . . . . . . . . . . 54
Power steering
refer to Electromechanical power assist 200
Power windows .... ................ .. 40
malfunction ..... ................ .. 41
Pregnant women
Special considerations when wear ing a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 143
pre sense ...... ... ................ . 192
Preventative passenger protection . . . . . 192
Proper occupant seating positions . .... 129
Proper safety belt position . . . . . . . . . . . . 142
Proper seating position
Front passenger . ................. . 130
Occupants ... .. .. ................ . 129
Rear passengers .. ............. .... 131