oil pressure AUDI A7 2012 User Guide

248 Tire s and whee ls
Where snow chains are mandatory oncer­
tain roads, this normally also applies to ve­
hicles with a ll-wheel drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory insta lled rims . If different rims are fit­
ted, the correct wheel bolts with the r ight
length and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bolts from a different vehicle -even if it
is the same model
r=> page 275.
A WARNING
Improperly tightened or maintained wheel
bolts can become loose caus ing loss of
cont ro l, a co llision and serious persona l in­
Jury .
- Always keep the wheel bolts and the
threads in the wheel hubs clean so the
wheel bolts can turn easily and be prop­
er ly t ightened .
- Never grease or oil the wheel bo lts and
the threads in the wheel hubs. They can
become loose while d riving if greased or
oiled, even if tightened to the specified
torque.
- Only use wheel bolts that belong to the
rim being installed.
- Never use different whee ls bolts on your
vehicle.
- Always maintain the co rrect tighten ing
torq ue fo r the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor­
que of the wheel bo lts is too low, they
can loosen and come out w hen the veh i­
cle is moving. If the tighteni ng torque is
too high, the whee l bolts and threads can be damaged and the whee
l can be­
come loose.
@ Note
The specified torque for the whee l bolts is
90 ft lb (120 Nm) with a tolerance of± 7,4
ft lb(± 10 Nm) . Torque whee l bolts diago­
nally. After changing a whee l, the torque
must be checked as soon as possible with a
torque wrench -preferably by an author­
i zed Audi dealer or qualified workshop .
Low aspect ratio tires
Your Audi is factory-eq uipped w it h low aspect
ratio tires. These tires have been tho roughly
tested and been se lected specifically fo r your
model for their superb perfo rmance, road fee l
and handling under a variety of driving condi ­
t ions . Ask your author ized A udi dealer for
more details.
T he low aspect ratio of these tires is ind icated
by a numera l of
55 or less in the tire's s ize
designation. The numera l represents the ratio
of the tire's sidewa ll height in relation to its
tread width expressed in percentage. Conven­
t iona l tires have a he ight/w idth ratio of 60 or
more .
The performance of low-aspect -ratio tires is
particularly sens iti ve to imp roper inflation
pre ssure. It is therefore important that low
a spect ratio tires ar e inflat ed to the specified
pre ssure and that the inflation pressure i s
r e gularly ch ecked and maintain ed. Tire pre s·
sure s should be checked at lea st once a
m onth and alw ays bef ore a long trip
r=> page 237, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be d amaged more
easily by impact with potholes, curbs, gull ies
or ridges on t he road, particularly if the tire is
u nd eri nflated.

Manual shift program . . . . . . . . . . . . . . 105
Selector lever .................. ... 103
Shift buttons . . . . . . . . . . . . . . . . . . . . . 106
Steering wheel with tiptronic . .. .. .. . 106
Automatic wipers .......... .. .. .. .... 45
Auto Safety Hotline ............ ... .. 126
Average consumption .......... ... .. .. 23
Average speed . . . . . . . . . . . . . . . . . . . . . . . 23
Avoid damaging the vehicle .. .. .. .. .. . 193
B
Battery ... .. .. ............. .. .. ... 226
Charging . .. ............. .... .. ... 229
Important warnings ...... .. .. .. .. . 227
Jump starting ............... ... ... 264
Location ... ... .. .. ...... .. .. .. .. . 227
l ow . .. .. .. .. ... .. ..... ... .. .. .. . 190
Replacing the battery ..... .. .. .. .. . 230
State of charge ........... .... .. ... 190
Winter operation ............ ... .. . 226
Working on the battery ....... ... .. . 227
Before driving . . . . . . . . . . . . . . . . . . . . . . 118
Blended gasoline .......... .... .. .. . 211
Blower (automatic climate control) . . . . . . 68
Blower (climate control) . . . . . . . . . . . . . . . 65
Body cavity sealing ............ ... .. . 205
Booster seats ............. .. .. .. .. . 172
Brake fluid Changing the brake fluid ....... ... .. 226
Checking the brake fluid level ... ... .. 225
What is the correct brake fluid level? .. 225
What should I do if the brake fluid warn-
ing light comes on? ....... .. .. .. .. . 225
Brake system Anti-lock braking system . ......... ... 18
Brake assist system .......... .... .. 184
Brake booster ............ .... .. .. . 188
Brake fluid .............. .... .. .. . 225
Brake fluid specifications for refill and re-
placement ................. ... ... 226
Brake light defective ......... ... .. .. 20
Brake pads . ............. .... .. ... 192
Electromechanical parking brake .. .. .. 74
Fluid reservoir ........... .... .. .. . 225
How does moisture or road salt affect the
brakes? .. ............ ...... .... .. 187
Index 279
Warning/indicator lights ............. 14
Worn brake pads symbol ............. 19
braking guard . . . . . . . . . . . . . . . . . . . . . . . 79
Messages . .. .. .. .... ........... .. . 86
Settings .. .. .. .. ................. . 86
Break-in period .. .... .. .. ...... ..... 192
Brake pads ...... .. ............... 192
T ires ... .. .. .. .. ... .. .......... .. 192
Bulbs .... .. .. .. .. .. ............... 263
C
California Proposition 65 Warning ..... 217
Battery specific .. .... ............. 228
Capacities .. .. .. .. .... ........... .. 272
Engine oil ........................ 218
Car care .. .. .. .. .. .. . .. .... ........ 200
Exterior ... .. .. .... ... .. ..... ..... 200
Interior . .. .... .. .. . .............. 206
Cargo area . . . . . . . . . . . . . . . . . . . . . . . . . 124
Cargo net . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Catalytic converter ................. . 193
Center armrest Cockpi t ..... .. ................... .
Sl
Central locking . . . . . . . . . . . . . . . . . . . . . . 31
Emergency locking . ............... .. 35
Certification ...... .. ............... 276
Changing a wheel .. ............. .. .. 254
Changi ng engine oil .... ............. 222
Chassis (undercoating) ............... 205
Checking Engine coolant level ............ .... 223
Tire pressure . .. .. ................. 237
Child restraints Danger of using child restraints in the
front seat ........................ 139
Where can I get additional information
about child restraints and their use? .. 181
Child restraint system anchors ....... . 177
Child safety ....... .. ..... .......... 163
Convertib le locking retractor ......... 17 4
Important safety instructions for using
child safety seats . .. ........... .... 167
Important things to know when driving
with children .. .... ............... 163
Tether anchors ..... .............. . 180
Tether straps .. .. ................. 180
•
•

28 2 Index
Oil grades . ...... ..... ... .. .. .... . 218
Oil level symbol ....... ... .. .. .... .. 20
Pressure malfunction . .... ... .. .... . . 1 6
Recommended oil check intervals ..... 221
Sensor defective . . . . . . . . . . . . . . . . . . . . 20
Specification and viscos ity ... ... .. ... 218
Engine speed limitation ... .. .. .. .... . . 20
E ng ine start system (indicator lights) .... 17
Environment Break- in period ........... .. .. .... . 192
Catalytic converter ................. 193
D isposing of your vehicle battery ..... 230
D riving at high speeds ..... .. .. .. .. . 195
D riving to m inim ize pollution and no ise 194
F uel ... ...... ............. ...... . 213
F uel economy .. . ...... ... .. .. .... . 194
L eaks under your veh icle ... .. .. .. .. . 2 16
L etting the vehicle stand and warm up . 195
Proper disposal of dra ined brake fluid . 226
Proper disposal of dra ined engine coo l-
ant . .. .. .... ........ ...... ... .. . 224
Proper disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 22 1, 222
Recycl ing used engine oil ... .. .. .. .. . 22 1
Un leaded fuel ............ .. .. .. .. . 211
What should I do wi th an old ba ttery? . 230
ESP (Electronic stabilization program) Warn ing/ indicato r lights . ....... ..... 18
Event Data Recorder ( EDR) ..... .. .... . 184
E xha ust tail p ipes .......... .. .. ..... 206
Expansion tank ............. .... .... 223
Exterior lighting . .. ..... ... .. .. .... .. 41
E xterio r m irrors
Ad just ing ............... .. .. .. .. .. 47
Di mm ing . ... ............ .. .. .. .. .. 48
H eating ..... .. .. ..... ... .. .. .... .. 47
E xte rio r temperatu re d isplay ... .. .. .. . . 22
F
Fastening
Booster seats ............... ... ... 172
Conve rtible c hild safety seats ... .. .. . 170
I nfant seats ... .......... .. .. .. .. . 169
Fastening eyes . ........... .. .. .... .. 62
Fl oor mats . . . . . . . . . . . . . . . . . . . . . . . . . 123
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . 123 F
or the sake of the environment
Gasoline fumes and the environment . . 213
Red ucing engine noise by early upshift-
ing ... .... .... .. .................. 10
Refueling . ................... .... 213
Sav ing fuel by early ups hifting ...... .. 10
Fo ur-zone automatic climate control ... . 67
Front a irbags
Descrip tion ................... .... 141
How they work ................ .. .. 14 7
Frontal collis ions and the laws of phys ics 129
F ront seats . . . . . . . . . . . . . . . . . . . . . . . . . 50
Adjusting . ....................... 120
Child restraints in the front seat .. .... 139
F uel
Additives . ..... .. ... .. ..... .... . .. 211
B lended gaso line ... ... ..... ... .. .. 211
C urrent consumption ............... . 23
Economy messages (effic iency program) 24
Fuel filler flap emergency release . .... 214
Fuel filler neck . .. ................ . 212
Fuel gauge .. .. .. ... .. .. ... ..... .. . 11
Gasoli ne .. .. .. .. .. .... .... .... ... 211
Gasoli ne add it ives ............... .. 212
Low fue l level symbol .......... .. .. . 20
Octane rat ing .... .. .... .... ... .. .. 211
Recommendation .... .. ..... .... . .. 211
Ref uel ling ..... .. .. ... ..... ... .. .. 213
Reserve ... ...... ................. . 11
Tank capac ity ................. 11,272
F uses
Assignment ..... .. ... ..... ... .. .. 260
Replacing ..... .. ... .. ..... .... . .. 260
G
Garage door opener (HomeLink ®) . ... .. 115
Garment hooks . . . . . . . . . . . . . . . . . . . . . . 56
Gas discharge lamps ............. .... 263
Ga uges
E ngine coo lan t temperature . . . . . . . . . . 10
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Speedometer .... .. .... .... ... .. .. . 25
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 11
Tr ip odometer .................. .. . 25
Genera l illustr ation ... .......... .. .. .. 8
Generator (warning/indicator lights) .... 16
G lossary of tire and loading terminology 232