2015 AUDI A6 power steering

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@ 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 193
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 the 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 includes and/or works together with the
anti-lock brake system (ABS), brake ass ist sys­
tem, ant i-slip regu lation (ASR), electron ic dif­
ferential lock (EDL), dynam ic steer ing* and
El ectronic interax le differentia l lock* /selective
whee l to rque control*. ESC is switched on a ll
the time. In ce rtain sit uat io ns when yo u need
less traction, you can sw itch off ASR by press­
ing the b utton
[fil ¢ page 195, fig. 178. Be
s u re to switch ASR on again when you no lon­
ger need less traction .
Anti-lock braking system (ABS )
ABS prevents the whee ls from locki ng up
when b raking. The vehicle can st ill be stee red
even during 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 indicates that
the system is helping you to brake the vehicle.
Brake a ssis t sy ste m
The brake ass ist system can decrease braking
distance . It increases braking power when the
driver presses the brake peda l quickly in emer­
gency s ituations. You must press and hold the
brake pedal unti l the situation is over. In .,,.
•
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194 Intelligent technology
vehicles with adaptive cruise control*, the
brake assist system is more sensitive if the
d istance detected to the vehicle ahead is too
smal l.
Anti -slip regulati on (ASR )
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to
the road conditions. This makes it easier to
start, accelerate and drive up hills.
Electronic diffe rential lock (EDL )
The EDL brakes wheels that are spinn ing and
transfers the drive power to the other wheels .
This function is available up to abo ut 75 mph
(120 km/h) .
I n extreme cases , ED L automat ic all y switches
off to help keep the brake on the braked whee l
from overheating . EDL will switch on again au­
tomatically when conditions have returned to normal.
Dynamic st eering*
On vehicles with dynamic steering* , ESC helps
stabilize the steering in critical situations .
Electronic interaxle differential lock */
s elective whe el torque control *
The electronic in teraxle d iffe ren tial lock (fro nt
wheel drive) or the select ive whee l torq ue
control (a ll-wheel drive) operates when driv­
ing throug h curves . The front whee l on the in­
side of the curve or both wheels on the inside
of the curve are braked selectively as needed.
T his minimizes sliding in the front wheels and
allows for more precise driving through
curves . The applicable system may not acti­
vate when d rivi ng in wet or snowy conditions.
_& WARNING
- E SC, ABS, ASR, EDL, dynamic steering*
and the E lec tronic interaxle differentia l lock
*/se lective whee l torque control*
cannot overcome the laws of physics.
This is especially important on slippery
or wet roads .
If the systems beg in acting
to stabilize your veh icle, you should im­
mediately chang e you r speed to match
the road and t raffi c conditions. Do not
let the increased safety provided by
these systems temp t you to take risks.
Doing so will increase the risk of a loss of
veh icle cont ro l, collision and serio us per­
sonal injur ies.
- Always adapt your speed to road, traffic
and weather conditions . The risk of los­
ing control of the vehicle increases when
driving too fast, espec ially through
curves and o n slippery or wet roads, and
when dr iv ing too close to vehicles up
a head . ESC, ABS, the brake ass ist sys­
tem, ED L, ASR, dynam ic steeri ng* and
the Electronic in terax le different ial
loc k*/se lective whee l torque control*
cannot prevent collisions .
- Always accelerate 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 reduce the risk of loss of ve­
hicle control.
(D Tips
- ABS and ASR only wo rk correctly when
all four wheels are equipped with identi­
cal tires . D ifferent tire si zes can lead to a
reduction in engine powe r.
- You may hear noises when the systems descr ibed are working.
- If the ind icator light
Bl or fJl1 (USA
mode ls)l iiJ (Canada models) appears,
there may be a malfunction
¢ page 19,
¢page 19 .

-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 .
'y. 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.
' :r- ij Dynamic steering: Initializing
If this d river message appears and the indica­
tor light is flashing on the instrument panel,
dynamic steering* is being reinitialized. After
starting the engine, the steering whee l w ill
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
ev1 moving . The display goes out as soon as initi-
"' 8 alization is complete .
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Intelligent technology 197
Drive slowly to your authorized Audi dea ler or
qualified workshop to have the ma lfunction
corrected.
_& WARNING
Have the dynamic steering* system mal­
function repa ired as soon as possible by an
authorized Audi dealer or qualified work­
shop -risk of acc ident!
(D Tips
If the . or (;r, ij ind icator light only stays
on for a short time, you may continue driv­ ing .
- The dynamic steering* stability systems
are not available in the event of a system
malfunction.
- For additional information on dynamic
steering*, refer to¢
page 100.
Driving with your
quattro
Applies to veh icles: w it h all -w hee l drive
-
With all-wheel drive, all four wheels are driv­
en.
General information
With all-wheel drive, power is distr ibuted to
all four wheels. This happens automatically
depending on your driving style and the road
cond it ions at the time. See also
Qpage 193.
A center differential distributes the driving
power variably to the front and rear axle.
It
works together with selective wheel torque
control, wh ich activates when driving through
curves ¢
page 194. With the sport differen­
tia l*, power distribution to the rear wheels is
variable and can be adjusted with drive se lect
¢ page 100.
The all-whee l drive concept is des igned for
high engine power. Your vehicle is exception­
ally powerful and has excellent driving charac­
teristics both under normal driving conditions
and on snow and ice. Always read and follow
safety precautions ¢
&- .,._
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-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 239
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.
•
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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.

28 0 Fu ses and bulb s
No. Equ ipment Amps
4 Suspension control system sen-
5
sor
5 E
lectronic 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 Termina
l 15 in the luggage com-
partment 30
15 T
erminal 15 (engine)
15
16 Starter 40
Fuse p anel @ (b rown )
No . Equipment Amps
1 Gateway
5
2 Cl imate control 10
Electronic 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 (Sportback)
20
12 Driver
door control module
15
Fuse panel © (r e d )
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 (driver seat)
11 Front
passenger door control
module
12 Right rear door control mod ule
Front passenger side cockpit fuse
assignment Amp
s
25
5/5
5/7,5 30
7,5 15
30
5
5
15
15
Fig . 2 1 6 Front passenger side cockp it: fuse pane l w ith
plastic bracket
Fu se p anel @ (bla ck)
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

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"' 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 5
5
Power steering column adjust-
ment
5
6 Steering column switch module 10
7
Power steering column adjust-
ment
25
8 Light switch 5
Luggage compartment fuse assignment
Fig . 217 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 281
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 s
2 Electromechanical parking brake 5
3
adaptive air suspension 5
4 Automatic transmission 7,5

306 Index
Saving fuel
Cylinder on d emand System .. .... .. .. 25
Efficiency program . . . . . . . . . . . . . . . . . . 26
Recuperation . . . . . . . . . . . . . . . . . . . . . . 25
Seat adjustment Controls . . . . . . . . . . . . . . . . . . . . . . . . . . S3
Driver's seat .............. ... .... .. 52
Front passenger's seat . . . . . . . . . . . . . . . 53
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 52
Head restraints . . . . . . . . . . . . . . . S5, 130
Safety guidelines .. ........ ... .. .. .. 52
Seat belts Why YOU MUST wear them
136
Seat covers
C leaning . .... ............. .. .... . 212
Seat heating/vent ilation (automatic cli ·
mate control) . . . . . . . . . . . . . . . . . . . . . . . 71
Seat heating (climate control) .. .. ...... 69
Seating position Driver ... .. ................ ..... . 127
Front passenger . . . . . . . . . . . . . . . . . . . 128
How to adjust the front seats ....... . 128
Incorrect seat position . . . . . . . . . . . . . . 130
Occupants .. .. . .......... .. .. .... . 127
Rear passengers . . . . . . . . . . . . . . . . . . . 129
Seat memory . . . . . . . . . . . . . . . . . . . . . . . 56
Seats Comfort seat side view .. .. .. .. .. .. . . 57
Seat symmetry ........... .. .. .. .. .. 57
Seats (number) ... .... ..... .. .. .. .. . 136
Selective catalytic reduction
refer to Ad Blue ............ ... .... . 218
Selective unlock feature ..... .... .... .. 34
Selector lever . . . . . . . . . . . . . . . . . . . . . . 107
Selecto r lever emergency release . . . . . . 113
Service and disposal Safety belt pretens ioner ... .. .. .... . 143
Service interval display ...... .. .. .... .. 27
Shift paddles ............... ... .... . 111
Ship (transporting your vehicle) ..... .. . 287
Shutting down vehicle ....... ... .. .. . 202
Side airbags Description .............. .. .. .. .. . 164
How they work ............ ... .... . 166
side assist . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Adjusting the brightness ... .. .. .. .. . . 98
Sensor range ............ .. .. .... .. 97 Side assist
Activating and deactivating ....... ... . 98
Cleaning the sensors ............ ... 210
S ide curtain airbags ............. .. .. 167
Description .... .. ............. .... 167
How they work ... ................ . 169
Safety instructions ............. .... 169
S ide marker lights . ... .......... .. .. . 43
Ski sack .. .. .. .. .. ............. .. .. . 65
Sliding/tilting sunroof Emergency closing ................ .. 41
Opening and closing ............ ... . 40
Snow cha ins .. .. . .. ............ .. .. 265
Socket . .... .... ................... . 59
Sources of information aboutchi ld re-
straints and their use ................ 189
Space-saving spare tire ........... .. .. 271
Spare tire . .. .... .. ............. .... 271
Speed limiter ..... ................ .. 30
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 2 7
Speed rating letter code .............. 260
Speed warning system ........... .. .. . 81
Sport differen tial .. ... .......... .. .. 100
Indicator light . .. ................ .. 23
Start-Stop-System ................. .. 79
Engine does not switched off .... .... . 80
Engine starts automatically ..... .... . 80
Indicator lights .. ............. .... . 79
Messages . ...... .. .............. .. 81
Start ing/stopp ing the engine .. .. .. .. . 79
switching off/on .. .... ...... ... .. .. . 81
START ENGINE STOP button ...... .. .. . 74
Starting from rest ... .............. .. . 78
Starting off with a trailer .......... ... . 78
Starting the engine ................ .. 74
Stee ring
Electrically adjustable steering wheel . . 73
Manua lly adjustable steering wheel ... . 73
also refer to Electromechanical power as-
sist ..... ..... .. .. .............. . 197
Steering wheel Easy entry feature ............. .... . 7 4
Indicator light . . . . . . . . . . . . . . . . 18, 197
Steering wheel heating .......... ... . 72