2018 AUDI A7 power steering

Intelligent Technology
Intelligent Technology Electronic stabilization
control (ESC)
Description
Elect ronic stabili zation control ( ESC) suppo rts
driver safety. It red uces the risk of slipping and
improves dr iving stabi lity. ESC detects crit ica l sit­
uations such as the vehicle overstee ring and un­
dersteeri ng or the w heels are sp inning. The vehi­
cle is stabilized by app lying the brakes or reduc ­
i n g e ngine torque . As soon as the ESC is active ly
regula ting, t he
Ii) indicato r light blink s in the in­
s trumen t clus ter.
The fo llow ing systems are in tegrated in the ESC:
Anti-lock braking system (ABS)
ABS p reve nts the whee ls from lock ing whe n brak ­
ing. The vehicle can st ill be steered even d uring
hard brak ing. Apply steady press ure to the bra ke
pedal. Do not pump the pedal. A puls ing in t he
b rake pedal indicates that the system is act ing to
s tabili ze the vehicle .
Brake assist system
The brake assist system can dec rease brak ing dis­
tance. It inc reases brak ing power when the d river
presses the brake pedal q uick ly in eme rgency sit­
uations . You must press and hold t he b rake pedal
until the dangerous si tuatio n is ove r. In veh icles
w ith adapt ive c ruise con trol*, the bra ke assist
sys te m is more sensitive if t he di stan ce detec ted
t o the veh icle dr iv ing a head is too small. On
ve hicl es w ith ac tivated and funct io ni ng night vi ­
sion assist*, the brake assist system can respond mo re sensit ively if there is a warning .
Anti-Slip Regulation (ASR)
ASR reduces eng ine power when the drive w heels
beg in sp inning a nd ad ap ts the force to the road
conditions. This makes i t easie r to sta rt, acceler ­
ate and dr ive up h ills.
Electronic differential lock (EDL)
ED L appl ies the bra kes to a w heel that st arts
sp inning and transfe rs th e dr ive powe r to the
120
othe r driving whee ls. This func tion is no t ava ila ­
ble at higher s peeds .
I n extre me cases , EDL au tomat ic al ly swi tches off
to keep t he b rake o n the br aked whee l from ove r­
h eating. The ve hicle is still wo rking co rrect ly. EDL
will switch on agai n automatically when co ndi ­
tions have returned to normal.
Steering recommendation
The ES C he lps to s tabili ze th e vehicle by ch ang ing
t h e steer ing torque.
In veh icles wi th dyna mic steer ing*, ESC a lso
h elps to stab ilize the steer ing in cr it ica l sit ua ­
t ion s.
Selective wheel torque control
Se lective wheel to rque con trol is used when driv­
i ng o n curves . The fron t whee l on the inside of
t h e curve or bo th whee ls on the i nside of th e
cu rve are braked se lective ly as needed. This al­
l ows mo re prec ise dr iving in curves .
Automatic post -collision braking system
The "automa tic post -coll is io n braking system"
can hel p t o reduce the risk of sl iding and of addi­
tiona l co llisions after an acc iden t. If th e a irbag
c ontro l modu le de tec ts a c ollisi on above a cert ain
vehicle speed, the ve hicle is brak ed by the ESC.
The veh icle does not brake automatically if :
- the drive r presses t he acce lerator pedal, or
- the bra kin g force generate d by the presse d
brake pedal is greater than the b raking force
that wo uld be in itiated by the system, or
- the ESC, the bra ke system or the ve hicle elect ri­
cal system are not functioning.
A WARNING
- The ESC and its integ rated systems can not
overcom e the lim its imposed by natura l
p hys ica l laws . Thi s is esp ec ially impo rtan t
on s lippery or wet roa ds. If the sys te m s be­
g in a cting to stab ilize y our vehicle, y ou
s ho uld immedi ately alter y o ur speed to
match the road an d traffic condi tions . Do
not let the increased safety provi ded tem pt

Intellig ent T echn olo gy
necessary. This causes the brakes to over­
heat and increases braking distance and
causes wear.
- Before driving downhi ll a long distance on a
steep hill, decrease your speed and select a l ower gear. This makes use of the engine
braking effect and relieves the brakes. If
you need to brake additionally, brake in in­
tervals and not continuously .
(D Tips
-If the brake booster is not working, you
must press the brake pedal with much more
force than normal.
- If you retrofit your vehicle with a front spoil­
er, wheel covers or s imilar items, make sure
that the a ir flow to the front wheels is not
i nterrupted. Otherw ise the brake system
ca n become too hot.
Electromechanical
steering, dynamic
steering
The electromechanical steering supports the
driver's steering movements .
Power steering adapts electronically based on
the vehicle speed .
Indicator light s and me ssages
• Do not d rive vehicle: St eering d efecti ve
If t his ind icator light tu rns o n and stays o n and
this message appears, t he power steer ing may
have fai led.
Stop the veh icle in a safe locat io n as soon as pos­
sib le. Do
n ot continue dr iving. See an author ized
Aud i dea ler or authorized Aud i Serv ice Facility for
assistance.
l;:r-ij St ee ring : Sys tem f ault You can con tinu e
dri ving
If the ind icator light turns on and the message
appears, the steering wheel may be more diff i­
cult to move or mo re sensit ive tha n usual. The
steer ing whee l may a lso be at an angle when
driving straight .
124
Drive slowly to an authorized Audi dea ler or au­
thorized Audi Service Facility to have the mal ­
funct ion corrected .
'I-ij Dyn ami c ste ering : Initializing
If the indicator l ight is blinking and this message
appears, dy namic stee ring* is be ing initialized.
The steer ing whee l will be easy to move afte r
start ing t he engine . Re -init ialization mig ht be
necessary if the steering wheel was moved hard
to the left and right while the vehicle was not
moving . The d isp lay turns off if the init ia li zation
was successful.
(D Tips
- If the . or 'Tfl indicator light only stays on
for a short time, you may cont inue driving .
- Th e dynamic steering stability systems
<=>page 120 are not avai lab le in the event of
a system malfunction.
- For additiona l information on dynamic
steering, see
<=> page 105.
All wheel drive (quattro)
Applies to: vehicles with all wheel drive
In all wheel drive, all four wheels are powered.
G en eral information
In all whee l dr ive, the dr iv ing power is divided be ­
tween all four whee ls. This happens automatical­
l y depending on your driving behavior as we ll as
the current road conditions . Also see
c> page 120, Electronic stabili zation control
(ESC).
A center differential distributes the driving power
variab ly to the front and rear ax le. It works to­
gether w ith selective whee l torque contro l, wh ich
activates when driving through curves
<=>page 120 . With the sport d ifferent ial*, power
distribution to the rear wheels is variable and can
be adjusted with d rive select
c> page 105 .
The all wheel drive concept is designed for high
engine power . Your vehicle is except ionally pow­
erful and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. A lways read and follow safety pre-
ca utions
c> .&. . II>-

Fuses
Driver side cockpit fuse
assignment
Fig. 208 Driver side cockpit: fuse panel with plastic bracket
Fuse panel @ (black)
No. Equipment
Electromechanical power steering, trailer
1 hitch, ionizer, switch strip, seat heating
(rear), electromechanical parking brake
Horn, climate control system, Gateway,
2 automatic
dimming interior rearv iew mi r-
ror, On-Board Unit
4 Park ing aid, headlight range adjustment
5 Dynamic steering, electronic stabilization
control (E5C)
6 Headlights
7 Adaptive cruise control
8 Front passenger's seat sensors, airbag
9 Gateway
10 Engine sound, night vision
assist, garage
door opener (Home link), parking aid
11 Video
camera image processing
12 Headlights
13 Steering column switch module
244
Fuse panel
@ (black)
14 Terminal 15 (luggage compartment)
15 Starter
Fuse panel @ (brown)
N o. Equipment
1 Infotainment system
2 Infotainment system
3 F
ron t passenger's seat
5 Airbag, electronic stabilizat
ion control
(ESC)
6 Anti-theft alarm system
7 Electromechanical parking brake
8 Inter
ior lights
9
Windshield video camera heating, light/
rain sensor
10 Lumbar support (dr iver's seat)
11 Driver's
seat
12 Electronic stabilization control
13 Horn
14 Headlights
15 F
ront seat heating
16 Dynamic steering
Fuse panel © (red)
No . Equipment
1 Clutch pedal
2 Fuel pump
3 Brake light sensor
4 Engin e acoustics
5 Rear door
6 Front
door
7 Electronic stabilizat ion control
8 Windshield wiper motor
9 Headlight washer system
10 Inter
ior lighting, climate control system
11 Headlights
12 Sunroof

a co ,...,
N
" N ,...,
0 00 <.:l ' Front passenger side
cockpit fuse assignment
F ig. 2 09 Front passenger side cockpit: f use pane l w it h
p las tic bracket
Fuse panel @ (red )
No . Equipment
1 Infotainment, CD changer
2 I nfotainment (disp lay)
Fuse panel @ (brown )
No . Equipment
1 Climate control system
2 Climate con
trol sy stem (blowe r)
3 Diagnostic interface
4 Ele ctrical ignit ion lo ck
5 Electronic steer ing column lock
6 S teer ing col umn sw itch modu le
7 Power steering column adjustment
8 Light swi tch
9 Head-up display
1 0 I
nst rument cluste r
1 1 Infotainment, DVD changer
Fuses
Luggage compartment
fuse assignment
F ig . 2 10 L uggage compa rtment: fuse pane l with p last ic
b racket
Fuse panel @ (black )
No . Equipment
1 Tra
ile r hitc h/220 volt soc ket
2 Tra ile r hi tc h /climati ze d cup holder
3
Tra iler hitc h/ad justing front passenger's
seat from the rear
4 El ec trome chanic al pa rking brake
s Electromec hanical parking brake
6 F ront door (fron t passenger's si de)
7 Rear exterior lighting
8 Cen tral locking, closi ng aid
9 Seat heating (front)
1 1 Seat heating (rear), c
limate control system
12 Tra ile r hitch
Fuse panel @ (red)
No . Equipment
1 Left safety belt tensioner
2 R igh t safety be lt te nsion er
3 F u el pump
4 En gine moun t (gasoline e ngine)
s
Sensor-controlled l uggage compa rtment
lid
6 A ir su sp ension, ad ap tive d am pers
7 Rear door (front passenger's side)
8 Tail lights
9 Luggage compartment lid
10 Rear sea t ente rtainmen t
12 Rear spoiler (Spo rtback), sunroof
245

Index
Seat heating (4-zone deluxe automatic cli-
mate control) . . . . . . . . . . . . . . . . . . . . . . . . . 61
Seat heating (deluxe automatic climate con-
trol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
Seating position
Driver
.. ... .. .. ................ ... .
Front passenger ................. ... .
H ow to adjust the front seats ... .. .. .. .
I ncorrect seat position ............ .. .
Occupants .. .. .. ............. .. .. .. . 130
13 1
131
133
130
Rear passengers . . . . . . . . . . . . . . . . . . . . . 132
Seats Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Clean ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Convenience s ide v iew . . . . . . . . . . . . . . . . . SO
Correct seating position . . . . . . . . . . . . . . 130
F olding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Massage function . . . . . . . . . . . . . . . . . . . . . 47
Seat symmetry . . . . . . . . . . . . . . . . . . . . . . . SO
Seats (number) . . . . . . . . . . . . . . . . . . . . . . . 138
Seat ventilation (4 -zone deluxe automatic cli ­
mate control) . . . . . . . . . . . . . . . . . . . . . . . . . 61
Selective wheel torque contro l . . . . . . . . . . 120
Selector
lever (automat ic transmission)
Emergency release . . . . . . . . . . . . . . . . . . . . 80
Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 s
Service and disposal
Safety belt pretensioner . . . . . . . . . . . . . . 145
Service interval display . . . . . . . . . . . . . . . . . 203
Shifting indicator . . . . . . . . . . . . . . . . . . . . . . 23
Shift paddles (automatic transmission) . . . . 78
Ship carrier . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Side airbags Description . . . . . . . . . . . . . . . . . . . . . . . . . 164
How they work . . . . . . . . . . . . . . . . . . . . . . 166
Side assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Adjusting the br ightness . . . . . . . . . . . . . . 101
Clean ing the sensors . . . . . . . . . . . . . . . . . 229
Sensor range . . . . . . . . . . . . . . . . . . . . . . . 100
Switching on and off . . . . . . . . . . . . . . . . . 101
also refer to Side assist . . . . . . . . . . . . . . . . 99
Side curtain airbags . . . . . . . . . . . . . . . . . . . 167
D .. escnpt 1on . . . . . . . . . . . . . . . . . . . . . . . . . 167
How they work . . . . . . . . . . . . . . . . . . . . . . 168
Safety instructions . . . . . . . . . . . . . . . . . . . 169
Ski bag ...... .. .. ................ ... .. 57
Secur ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
268
Snow chains
Socket
Sources of information about child restraints
and their use .. .. .. .. .. ............. . . 221
52
188
Space-saving spare tire . . . . . . . . . . . . . . . . 241
Spare tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . .
9
Speed warning system . . . . . . . . . . . . . . . . . . 84
Spoiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Sport differential Indicator light 105
18
Star button . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Start/Stop system . . . . . . . . . . . . . . . . . . . . . 70
Engine does not switch off . . . . . . . . . . . . . 71
Engine starts automatically . . . . . . . . . . . . 71
Indicator lights . . . . . . . . . . . . . . . . . . . . . . 70
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Starting/stopping the engine . . . . . . . . . . . 70
Switching off/on . . . . . . . . . . . . . . . . . . . . . 72
START ENGINE STOP button . . . . . . . . . . . . . 68
Starting to drive ..... .. ................ 74
Start ing (engine) 68, 70
Steering Electromechanical steering . . . . . . . . . . . . 124
Indicator light . . . . . . . . . . . . . . . . . . . 15, 124
Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
also refer to Electromechanical steering . 124
Steering wheel Buttons ......... .. .. ................ 21
Easy seat entry . . . . . . . . . . . . . . . . . . . . . . . 67
Manua l adjustment . . . . . . . . . . . . . . . . . . . 66
Power adjustment . . . . . . . . . . . . . . . . . . . . 67
Shift paddles (automatic transm iss ion) . . . 78
Steering wheel heating . . . . . . . . . . . . . . . . 63
Steps for determining correct load limit ... 219
Stopping (engine) . . . . . . . . . . . . . . . . . . . 68, 70
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Storage compartments . . . . . . . . . . . . . . . . . 52
Storage hooks . . . . . . . . . . . . . . . . . . . . . . . . . 56
S tronic (automatic transmission) . . . . . . . . . 7
4
Launch control program . . . . . . . . . . . . . . . 79
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Convenience opening . . . . . . . . . . . . . . . . . . 36
Emergency closing . . . . . . . . . . . . . . . . . . . . 37
Sunshade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44