steering wheel AUDI A7 2014 Service Manual

overheat, premature wear and increased
stopp ing distance.
- Under certain climatic and operating
conditions such as passing through wa­
ter, driving in heavy rain 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
for a test. Brakes will dry and ice coat­ ings will be cleaned off after a few ca re­
f ul brake applications.
- Driv ing for an extended period of time on
salt-covered roads w ithout using your
brakes can also affect braking efficiency.
Clean off accumulated salt coating from
brake discs and pads w ith a few caref ul
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. Otherwise 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
c reased stopp ing distance. Avoid driv ing
the vehicle and have it towed to the near­
est Aud i dea ler o r q ualified workshop.
- Never let the vehicle roll to a stop w ith
the engine shu t off.
- If the brake booster is not work ing, the
brake pedal must be pressed conside ra­
bly harder to make up for the lac k of
booster assistance.
Electro-mechanical
power assist
The electro-mechanical power assist helps
the driver when steering.
Powe r steering adapts electronically based on
the vehicle speed.
Indicator lights and message s
• Steerin g defective! Stop th e vehicle
Int ellig ent technolog y 201
If this indicato r light turns on and stays on
and t his message appears, the power steering
may have failed.
Do
not con tinue dr iv ing . See your au thor ized
Audi dealer or other qualified repair facility
for assistance .
'I-Y Steering: System malfun ction! You may
c ontinue dri ving
If the indicato r light turns on and the mes­
sage appea rs, the stee ring may be more diffi­
c ult to move o r more sens itive than usual.
Drive slowly to your authorized Aud i dealer or
qualified workshop to have the ma lfunction
corre cted.
0) Tips
If the . or 1:z;lj indicator light on ly stays
on for a short t ime, yo u may continue dr iv­
i ng.
Driving with your
quattro
App lies to veh icl es: w ith all-w hee l drive
With all-wheel drive, all four wheels are driv­
en.
General information
Wi th a ll W heel 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 196.
With the sport different ia l* , power distribu­
tion to the rear wheels is variable and can be
adjusted with Audi dr ive select*
~ page 102.
Always read and follow safety precautions
~ .&. .
Winter tires
When dr iving in the winter, yo ur vehicle with
all-wheel drive has an advantage, even wit h
regular tires . In winter road conditions it may
be advisable to mount winter tires (or all-sea­
son tires) for improved driveability and brak­
ing: these tires must be moun ted o n
all four
wh eel s.
See also~ page 258, Winter tires. ..,.
•
•

24 4 T ire s and wheel s
-Never mount used tires on yo ur vehicle if
you 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 t ire failure
and loss of vehicle control.
- 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 designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight
means t he comb ined we ight (in excess of
those sta ndard items which may be rep laced)
of au toma tic tra nsmission, power steer ing,
power brakes, power windows, power seats,
radio, and heater, to the extent that th ese
items are availab le as factory -installed equip­
ment (whether installed or not) .
Aspect ratio
means t he ratio of the he ight 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 overall handling on dry pavement .
Bead
means the part of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead separation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire . typ
ica l in those seasons . Audi recommends
using winter tires during the winter
months . Low temperatures signif icant ly
decrease the e lasticity of summer tires,
which affects tract ion and brak ing ability.
If summer tires are used in very co ld tem­
peratures, cracks ca n form on the tread
bars, res ulting in permanent tire damage
that can cause loud driving no ise and un­
balan ced t ires. Audi is not responsible for
th is type of damage .
Cold tire inflation pressure
means the tire p ressu re recommended by t he
vehicle manufacturer fo r a tire of a des igna ted
s iz e that has not bee n driven for more than a
coup le of miles (k ilometers) at low speeds in
t h e three hour period before the tire pressure
is measured or adjusted.
Curb weight
mea ns the we ight of a motor ve hicl e w ith
standard equipment including the max imum
capacity of fuel, oil, and coolant, air condi ­
tioning and additional weight of optiona l
equipment.
Extra load tire
me ans a t ire design to operate at higher loads
and at h igher inflation pressures than the cor­
responding standard tire . Extra load tires may
be identified as "XL", "x l" , "EXTRA LOAD", or
"RF" on the sidewall.
Gross A xle Weight Rating ("GAWR ")
means the lo ad -c a rry ing c apac ity of a s ingle
axle system , measured a t the tire-ground in­
terfaces.
Gross Vehicle Weight Rating ("GVWR ")
mea ns the maximum total loaded we ight of
t h e ve hicl e. .,.

254 Tires and wheels
Unbalanced wheels must be rebalanced to
avoid excessive wear on steering, suspension
and tires. A wheel must also be rebalanced
when a new tire is installed .
Incorrect wheel alignment
Incorrect wheel alignment can cause exces­
sive tire wear, impairing the safety of the vehi­
cle. If tires show excessive wear, have the
wheel alignment checked by an authorized Audi dealer or qualified workshop.
All-wheel drive
Vehicles with quattro must always have tires
of the same size, construction and tread type .
For details see
~page 201.
A WARNING
Sudden tire failure can lead to loss of con­
trol, a crash and serious personal injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- Worn tires are a safety hazard, they do
not grip well on wet roads and increase
your risk of"hydroplaning" and loss of control.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- Tires age even if they are not being used
and can fail suddenly, especially at high
speeds . Tires that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used tires on your 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.
New tires and replacing tires and wheels
New tires and wheels have to be broken in .
Fig. 204 Tire specificat ion codes on the s idewall of a
tire
No. Description
@ Nominal w idth of tire in millimeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® L oad index and speed rating
(J) U.S . DOT tire identification number
® Audi Original tire
® Sever snow conditions
@ Tire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
vehicle 's design . The tires and rims approved
by Audi are spec ially matched to the charac­
teristics of the vehicle and can make a major .,..

A WARNING 1= •
-If the tire pressure indicator appears in
the instrument cluster d isplay, one or
more of your tires is s ignificantly under­
inflated. Reduce your speed immediately
and avoid any hard steering or braking
maneuvers. Stop as soon as possible and
check the tires and their pressures . In­
flate the tire pressure to the proper pres ­
sure as indicated on the vehicle's tire
pressure label¢
page 247. Driving on a
signif icantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also is likely to impair the vehicle's handling and stop­
ping abi lity .
- The driver is responsible for ma inta ining
the cor rect t ire pressures. You must
check the t ire pressures regularly.
- Under certain cond itions (such as a spor­
ty driving style, w inter condit ions or un­
paved roads), the pressure monitor ind i­
c ator may be de layed.
- Ask your author ized Audi dealer if run­
flat tires may be used on your veh icle.
You r vehicle registrat ion becomes inva lid
i f you use these tires when not permit ­
ted. Damage to your vehicle o r acc idents
cou ld also resu lt.
@ Tips
- The t ire pressure monitoring system
stops working when there is an ES C/A BS
malfunction.
- Using snow chains may resul t in a system
malfunction.
- The t ire pressure moni toring sys tem on
you r A udi was developed using t ires with
the "AO" or "RO" identification on the
tire sidewall ¢
page 254. We recom­
mend using these t ires.
Tire s an d wheel s 263
Reset tire pressure monitoring system
Applies to veh icles : w ith tire p ress ure mo nito rin g syste m
If the tire pressure is adjusted, wheels are ro­
tated or changed, the TPMS must be reset via
MMI .
.,. Switch o n the ignition.
.,. Select in the MMI:
ICA RI function button >
(Car )* syste m s control button > Servicing &
ch eck s > Tire pr essure monitoring > Store
tire pre ssur es> Yes, stor e now .
(D Tips
Do not s to re the tire pressure if there are
snow cha ins on t he tire.
•
•

29 0 Index
A
Accessories . ...... ..... ... .. .. .... . 28 7
Active lane ass ist ... ... .. .. .. .. .. .. .. 95
Activating and deactivating . . . . . . . . . . . 96
C leaning the camera area .. .. .. .. .. . 214
Descr ipt ion ... ........... .. .. .... .. 95
I nstrument cluster indicator light . . . . . 96
Messages . . . . . . . . . . . . . . . . . . . . . . . . . 96
Notes on instrument cluster display . . . . 96
Setting the steering wheel vibrat ion . . . . 97
AC (automatic cl imate control) . .. .. .. .. 72
AC (climate control) . . . . . . . . . . . . . . . . . . 70
Adaptive air suspension/sport . ... .. .. . 102
Adapt ive cruise control . . . . . . . . . . . . . . . . 86
C leaning the senso r ....... .. .. .... . 214
Messages ............... .. .. .. .. .. 93
Request for driver intervention . . . . . . . . 91
Stop-and-go traffic . . . . . . . . . . . . . . . . . 90
Adapt ive Lig ht (defective) ... .. .. .... .. 23
AdBlue .. .. .. .. . .......... .. .. .... . 223
F illing . .. .. ............... .. .... . 225
Messages in the instrument cluster dis-
play ... .. .. ... .... .... .. .. .. .. .. . 224
Adding Eng ine coolant ........... .. .. .. .. . 235
Eng ine oil ................. .. .... . 232
W indshield washer fluid . ...... .. .. . 241
Additives Eng ine oi l ............... .. .. .... . 232
Adj usting
A ir dist ribution (au tomatic climate con-
trol) .. ... ... .. .. ..... ... .. .. .... .. 73
ai r distribution (climate control) ... .. . . 70
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 53
Instrument illum inat ion ..... .. .... .. 47
Steer ing column e lectrically .. .. .... .. 75
Steer ing column manually ... .. .. .. . . 75
Temperature (automat ic climate co ntrol) 73
Temperature (climate control) .... .. .. 70
A irbag system . . . . . . . . . . . . . . . . . 149, 170
Advanced Airbag System ... .. .. .... . 153
Advanced Airbag System components . 157
Care ..... .. ................ ... ... 165
C hi ldren ... ... .... ...... .. .. .. .. . 177
C hil d restra ints ........... .. .. .. .. . 177
Componen ts (front airbags) .. .. .. .. . 157 Danger of fitting a ch
ild seat on the front
passenger seat ... .. ... ..... ... .. .. 151
Disposa l .. .. .. .. ... .. ..... ... .. .. 165
Front a irbags . . . . . . . . . . . . . . . . 153, 155
How do the front airbags work? .. .... 159
How many a irbags does my vehicle
have? ...... .. .. .. ... ... ... .. .. .. 157
How the Advanced Airbag System com-
ponents work togethe r ......... .. .. 159
Important safe ty instru ct ions on the
knee airbag system .. .. ..... ... .. .. 168
Important things to know .. ... ... . .. 149
Knee airbags ..... .. ... ..... ... .. .. 166
Monitoring .... .. ............. .... 161
PASSENGER AIR BAG OFF light ... .... 162
Repairs ... .... .. ............. .... 165
Safety instructions ................. 164
S ide a irbags ... .. ... .. .. ... ..... .. 169
S ide curtain airbags ... ...... ... .. .. 172
Warning/ind icator lights ........ .. .. . 19
Warning/Indicato r lights ....... .. .. 161
When must the system be inspected? 161
Aircraft Transporting your vehicle
Alcantara 280
Cleaning .. .... .. ............. .... 216
All -wheel drive .... .. ... ..... ... .. .. 201
Winter tires ..... ... .. ..... ... .. .. 258
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Amb ience lighting .............. .... . 47
Anti-freeze
refer to Engine coolant . ..... ... .. .. 234
Anti- lock b rak ing system ............ . 196
Wa rning/ind icator lights . . . . . . . . . 19, 20
Anti-slip regulation ............. .. .. 196
Warning/ind icator lights .. ... ..... .. . 19
Anti-theft systems Electronic immobi lizer .. ..... ... .. .. . 33
Asht ray .... .... ................... . 59
Audi braking guard
refer to brak ing guard ............. .. 86
Audi drive select
refer to drive select ............ .... 102
A udi Serv ice Repair Manuals and Litera-
tu re ... .. .. .. .. .. .. .... . ..... ... .. 285

300 Index
Starting from rest . . . . . . . . . . . . . . . . . . . . 80
Starting off with a tra iler ... ... .. .. .. . . 80
Starting the engine .......... .. .. .. .. 76
Steer ing
Electrically adjustable steering whee l .. 75
Manually adjustable steering whee l .. .. 75
also refer to Electro -mechanical power
assist . ...... ................... . 201
Steer ing whee l
Easy entry feature ......... ... .... .. 76
Indicator light . . . . . . . . . . . . . . . . . . . . . 18
Steering whee l heating ..... ... .. ... . 74
Steering wheel column
Adj usting e lectr ically ...... .. .. .. .. . . 75
Adjusting manually ........ ... .. .. .. 75
Steer ing wheel w ith tiptronic ... .. .. .. . 113
Steps for determining correct load limit . 252
Stopping the engine . . . . . . . . . . . . . . . . . . 77
Storage . . . . . . . . . . . . . . . . . . . . . . . . 60, 64
S tronic transmission Launch Control Program ............ 114
S tron ic (automatic transmission) . .... . 109
Sunroof . .. ................... .... .. 42
Sun shade ... ................ ..... .. 48
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Symbols
refer to Warning/indicator lights ...... 12
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 12, 24
Tail lights
C leaning ................ .... ..... 214
TOI clean diesel
refer to Ad Blue .. ...... .... ... .. .. . 223
Technical data .............. ... .. .. . 282
Technical modifications ..... .. .. .... . 288
Temperature d isplay ...... .. .... .. .. .. 24
Tether anchors ..................... 192
Tether strap . ... ......... ... .. .. ... 192
Textiles Cleaning . .. ............. .. .. .. ... 216
The first 1,000 miles (1,500 km) and after-
wards ..... .. ................ ..... . 204
Three-zone climate control .. .. .. .. .. . . 70
Tie-downs . . . . . . . . . . . . . . . . . . . . . 66, 137 T
ips for the environment
Saving fuel . ..... ................ .. 63
t iptron ic (automatic transmission) 109, 113
Tire pressure .... ................... 249
T ire pressure monitoring system ....... 261
Loss of air pressure ................ 262
Malfunction ..... ................ . 262
Resetting tire pressures ......... .... 263
T ires ....... .. .. .. ............... .. 243
Service life .... .. ............. .... 253
Speed rating letter code ............ 255
Tire manufacturing date ............ 255
Tire specifications ............... .. 255
Tread depth ...................... 253
Uniform tire quality grading ..... .... 257
Winter tires ..... ... ........... ... 258
Tires and vehicle load limits ........ ... 251
T ires and wheels
Checking tire press ure ........ .. .. .. 249
Cold tire inflation pressure ....... ... 247
Dimensions . ..... ................ . 254
General notes .... ................ . 243
G lossary of tire and loading terminolo-
gy ....... .. .. .. .. ............... 244
Low aspect ratio tires ............. .. 260
New tires and wheels ........ ... .. .. 254
Replac ing ... .. .. ....... ...... .. .. 255
Snow chains ..... ... ........... ... 259
T ires and veh icle load limits ..... .... 251
Wheel bolts .................. .... 260
Winter tires ...... ................ 258
Tire service life .. .. ..... ..... ... .. .. 253
Too ls ..... ... .. .. ................ . 264
T orn or frayed safety belts ............ 143
Towing Tow truck procedures ........ ... .. .. 278
TPMS Tire pressure monitoring system . .. .. 262
T rai le r towing . .. .. ............... .. 209
Operating instructions .............. 209
Parking system ... ................ . 127
Technical requirements . . . . . . . . 209,210
Trai ler towing tips ................. 211
T rain (transport ing you r vehicle) . .. .. .. 280
Transmission .. .. .. ....... ...... .... 109
Transmission malfunction (indicator
light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114