power steering AUDI A4 2013 User Guide

190 Intelligent technology
to brake. This may cause the brakes to
overheat, premature wear and increased
stopp ing distance.
- Under certain climatic and operating
condit ions such as passing through wa­
ter, driving in heavy ra in or after wash ing
the vehicle, the effect iveness of the
brakes can be reduced . In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
f or a test . B rakes will dry a nd ice coat­
ings will be cleaned off after a few ca re ­
ful brake applications.
- Driv ing for an extended pe riod of time on
salt -covered roads without using you r
brakes can also affect braking efficiency.
Clean off accumulated salt coating from
brake discs and pads w ith a few careful
brake applicat ions.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the air
flow to the front brakes is not obstruct­
ed . O therwise the brake system could
overheat reducing the effectiveness of
the ent ire brake system.
- Failure of one brake c ircuit will impair
the braking capability resulting in an in­ creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to t he near­
est author ized Audi dealer or qualif ied
workshop.
- Never let the vehicle roll to a stop w ith
the engine shut off.
- If the brake booster is not working, for
example when towing your ve hicle, or
because the b rake booste r has somehow
been damaged, the brake pedal must be
pressed considerab ly harder to make up
for the lack of booster assistance.
Electro-mechanical
power assist, dynamic
steering
The electro-mechanical power assist helps
the driver when steering.
Power steer ing adapts electronically based on
the veh icle speed.
Indicator lights and messages
• Ste ering d efe ct ive ! Do not d rive vehicle!
If this indicator light turns on and stays on
a nd 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.
'Tij D ynamic steer ing: Sy stem f au lt! You c an
cont inue d riving
If the indicator l ight turns on and the mes­
sage appears, the stee ring may be more diffi­
c ul t to move o r more sensitive than usua l. The
steering wheel may a lso be at an ang le when
driv ing straight.
Drive slowly to your authorized Audi dea ler or
qualified workshop to have the ma lf u nction
corrected.
'Tij Dynamic stee rin g: initializing
If this driver message appears and the indica­
tor light is flashing on the instrument panel, dynamic steer ing* is being re initia lized . On ce
you start the engine after t his is finished, the
steering wheel will be easy to move . Re-initi­
alizat ion might be necessary if the steering
whee l was moved hard to the left and right
whi le the vehicle was not moving. The display
goes out as soon as initiali zation is complete.
A WARNING
-Have the dynamic steering* system mal­
function repa ired as soon as possible by an
authorized Audi dealer or any qualified
workshop - r is k of accident!
-

@ Tips
- If the . or
fT j indicator light on ly stays
on for a short t ime, you may continue
driving.
- The dynamic steering* stability systems
are not available in the event of a system
malfunction.
- For additional information on dynamic
steering*, refer to
c:> page 113.
Driving with your
quattro ®
Applies to vehicles: with a ll-wheel drive
With all-wheel drive, all four wheels are driv­
en.
Gener al inform ati on
W ith all-wheel drive, power is distributed to
all four wheels . This happens automatically
depending on your dr iving style and the road
conditions at the t ime. See also
c:> page 185.
A center different ial distr ibutes the dr iv ing
power var iably to the front and rear axle . It
works together with selective wheel torque
control, which activates when driving throug h
curves
c:> page 186. With the spo rt d ifferen ­
tial*, power dist ribution to the rear wheels is
variable and can be adjusted with drive select
c:> page 113.
The all-wheel drive concept is designed for
h igh engine power. Yo ur vehicle is exception ­
ally powerful and has exce llent driving charac ­
teristics both under normal driving conditions
and on snow and ice. Always read and fo llow
safety precautions
c:> A .
Winter t ir e s
When driv ing in the w inter, your veh icle w ith
all-wheel drive has an advantage,
even with
regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-sea­
son t ires) for improved driveability and brak­
ing: these tires must be mounted on
a ll four
w heels . See also c:> page 250, Winter tires .
Intellig ent technolog y 191
Tire chain s
Where tire chains are mandatory on certain roads, this no rma lly also applies to veh icles
with all-wheel drive
c:> page 251, Snow
chains.
Replacing wheels /tires
Vehicles with a ll-wheel drive must always
have tires of t he same s ize. A lso avoid tires
with different tread depths . For detai ls see
page
c:> page 246, New tires and replacing
tires and wheels .
Off-Road driving?
You r A udi does no t have enough ground clear ­
ance to be used as an off-road vehicle .
It is
therefore best to avoid rough tracks and un ­
even terrain as much as possib le . Also refer to
c:> page 194.
A WARNING
Always adjust your dr iving to road and traf­
f ic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks .
- Although the all-wheel drive is very ef­
fective, always remember that braking
capacity is lim ited by tire traction. You
should therefore not d rive at excessive
speeds on icy or slippe ry road surfa ces.
- On wet road surfaces, be careful not to
drive too fast because the front wheels
co uld begin to slide on top of the water
(aquaplaning) . If this should occur, yo u
will have no warning from a s udden in ­
crease in engine speed as w ith a front­
wheel drive veh icle. Always drive at
speeds which are su ited to the road con­
ditions -risk of crash.
•
•

-Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, 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 summe r and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight means the comb ined weight (in excess of
those sta ndard items which may be rep laced)
of au toma tic transmission, power steer ing ,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip­
ment (whether installed or not) .
Aspect ratio
means the rat io o f the height to the w idth of
the tire in percent . Numbers of 55 or lower in ­
dicate a low sidewall for improved steering re­
sponse and better overa ll handling on dry
pavement .
Bead
means the part of the t ire t hat is made o f
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the r im.
Bead separation
means a b reakdown of the bond between
components in the bead .
Cord means the strands forming the plies in the
tire.
Tire s an d wheel s 235
typica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
dec rease the e lasticity of summer t ires,
which affects tract ion and brak ing ability.
If summer t ires are used i n very co ld tem ­
peratures, cracks ca n form o n the tread
bars , res ulting in perma nen t tire damage
that can cause loud driving noise and un­
bala nced ti re s. Audi i s not respon sible for
th is type of damage .
Cold tire inflation pressure
means the t ire p ress ure recommended by t he
vehicle manufacture r fo r a tire o f a des ignated
s ize t hat has not bee n driven for more than a
coup le o f miles (k ilometers) at low speeds in
the three hour period before the tire press ure
is m easured or adjusted.
Curb weight
me ans the we ight of a motor ve hicle with
st andard equipmen t incl ud ing the max imum
capacity of fuel, oi l, and coolant, air condi ­
tioning and additional weig ht of optiona l
equipment.
Extra load tire
means a t ire design to oper ate a t higher load s
and at higher inflation pressures than the cor­
responding standa rd tire . Extra load tires may
be identified as "XL", "x l", "EXTRA LOAD", o r
"RF" on the sidewal l.
Gross Axle Weight Rating ("GAWR")
me ans the load-ca rry ing capac ity of a single
axle system , measured at the tire -ground in­
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
mea ns the maximum total loaded we ight of
the ve hicl e. .,..
•
•

--No. Consumer Amps
I a
Gateway (Databus diagnos-
5 tic interface)
I
9 Supplementary heater
Fuse panel ® (brown )
1 CD/DVD playe r
2
Wi-Fi
3 MMI/Radio
4 Instrument cluster
5 Gateway (instrument cluster
control module)
6 Ignition lock
7 Light switch
8
Climate cont
rol system
blower
9 Steering column lock
10 Climate control system
11 Termina
l 30 diagnostic con-
nector
-
12 Steering column switch
module
Right luggage compartment fuse
assignment
5
5
5
5/20
5
5
5
5
40
5
10
10
5
F ig . 2 12 R igh t lu ggage compar tmen t: fu se pan el w ith
pla stic cl ip
-
Fu se s and bulb s 267
No . Consumer Amps
Fuse panel @ (blac k)
Luggage compartment lid
1 control module (all
road) /
30/10
Power top control module
(Cabriolet)
Trailer con trol modu le or re-
2 tractable rear spoiler (RS 5 15
Coupe)
3 Trailer control module 20
4 Trailer contro l modu le 20
5 Electromechanical parking
5
brake
6 E lectron ic damping con trol 15
7
Electromechanical parking
30
brake
8 R ear exterior lighting 30
9 quattro sport
35
10 Rear exterior lighting
30
11 Vehicle electrical system
20
con trol module
12 Term inal 30
5
Fuse panel © (brown )
1 Luggage compartment lid
30
control module (allroad)
-.
2 12-volt
socket, cigarette
20
lighter
3 DCDC converte
r path 1 40
4 DCDC converter path
2, DSP
30
amplifie r, radio
6
Right upper cabin heating
30
(Cabriolet)
7
Electromechanical parking
30
brake
R ig ht front door (window
9 regulator, central locking,
30
mirror, switch, lighting)
10 L
eft upper cabin heating
30
(Cabriole t)
Two-door models : rear r ight
window regu lator, Four-door
11 models : rear right door
30
(w indow regulato r, ce ntra l
l ock ing, switch , lighti ng)

Optional equipment
Marked with an asterisk . . . . . . . . . . . . . . . 6
Othe r equipment (effic iency program) 28
Outside m irrors
refer to Exter ior mirrors . . . . . . . . . . . . . 50
Outside temperature display ... .. .. .. .. 24
Owner's manual How the Owner 's Manua l is o rganized . . . 6
p
Paint
Touch-up . .. .. .. .. .. .... ... .. .. .. . 207
Paint No ... .. ................. .. ... 275
P arce l shelf . ... .. ........ ... .. .. .. .. 75
Park assist . ................ ...... .. 116
Parking ..... .. .. .. .. .... ... .. .. .... 86
Automatic transmission . . . . . . . . . . . . . 93
Valet park ing ............ .... .. .. .. 45
P ark ing brake . ..... .... ... .. .. .. .. .. 85
also refer to Electromechanical parking
brake . ..... .. .. ... . .... ... .. .. .... 85
P ark ing system ............ .. .. .. .. . 116
C le a ning sensors/c amer a .... .. .. .. . 205
Rear . ..... ... .. .. ..... ... .. .. ... 116
Rear,withrearviewcamera ... .. .. .. . 117
P ark ing system (rear) ............ .... 116
Adj ust ing the wa rning tones .. .. .. .. . 117
Park ing system (rear, w ith rear v iew cam-
era) Park ing mode 1 . ............. ... .. 120
P ark ing mode 2 ............. ... ... 121
S afety precautions ........ .... .. .. . 118
Sw itchi ng on/off ......... .. .. .. .. . 119
Sw itching rear view camera on/off ... . 122
Part it ion net . . . . . . . . . . . . . . . . . . . . 70, 7 1
Parts rep lacement . ..... ... .. .. .. .. . 282
P ass-t hrough . . . . . . . . . . . . . . . . . . . . . . . . 7 4
PASSENGER AIR BAG OFF light . . . . . . . . 156
Passive safety system .... ... .. .. .. .. . 127
P eda ls .. .. ... ...... ............. .. 132
Phys ica l pr inc iples of a frontal coll is ion . 138
P olishing .. .. .... ............. .. .. . 20S
Pollutant filter (automatic AC system) . .. 76
Power seat adjustment . . . . . . . . . . . . . . . . . . . . 60
Inde x 293
Power locking system . . . . . . . . . . . . . . . . . 32
Emergency locking . .. ... ...... ... .. . 38
Power w indows . ... . .. ... .... ... .. . 43
Rear lid ... .. .. .. ................. . 39
Se lective unlock feature ............ . 3 7
Settings ........ .. ................ 37
Slid ing/tilting sunroof .. .. .. ... ... .. . 43
Power steering
refer to Electro-mechanical power as-
s ist ...... .. .. .. .. . .............. 190
Power w indow
Convenience opening/closing . ... .. .. . 43
Power w indows .. .. .... ........... .. . 42
Child safe ty locks . . . . . . . . . . . . . . . . . . . 42
Malfunctions .. .. ................. . 44
Pregnant women Spec ial considerations when wear ing a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 142
Proper occupant seating positions ... .. 128
Proper safety belt position ..... ... .. .. 141
Proper seating posi tion
Front passenger ................... 129
O ccupants . .. .. .. .... ........... .. 128
Rea r passengers .. .... ........... .. 130
Protective liner .. .. .... ... .... .... .. . 7S
Q
Quart z clock . . . . . . . . . . . . . . . . . . . . . . . . 12
qua tt ro®
refer to all-wheel drive
191
Question What happens to unbelted occupants? 138
Why safe ty belt s? ............. .... 13 7
R
Radiator fan 228
Rain/ light sensor
Head lights .. .. .. .... ........... .. . 47
Intermittent (w indshield w ipers) . .. .. . S3
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
Reading lights ....... . .. .. ..... ... .. . 50
Rea r doo r su n shade . . . . . . . . . . . . . . 52, 53
Rear fog lights .. ...... ............. . 47
Rea r lid
Automatic operation . .. ..... ... .. .. . 40
Emergency re lease . .. ... .... ... .. .. . 41
•
•