2012 VOLVO XC70 traction control

07 Wheels and tires
Uniform Tire Quality Grading
07
299 Quality grading information
ALL PASSENGER VEHICLE TIRES MUST
CONFORM TO FEDERAL SAFETY
REQUIREMENTS IN ADDITION TO THESE
GRADES
Quality grades can be found, where appli-
cable, on the tire sidewall between the tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire gra-
ded 150 would wear one and one half (1 1/2)
times as well on the government course as a
tire graded 100. The relative performance of
tires depends upon the actual conditions of
their use, however, and many depart signifi-
cantly from the norm due to variation in driving
habits, maintenance practices and differences
in road characteristics and climate.
TRACTIONThe traction grades, from highest to lowest, are
AA, A, B, and C, as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked Cmay have poor traction performance. The trac-
tion grade assigned to this tire is based on
braking (straight-ahead) traction tests and is
not a measure of cornering (turning) traction.
WARNING
The traction grade assigned to this tire is
based on braking (straight-ahead) traction
tests and is not a measure of cornering
(turning) traction.
TEMPERATUREThe temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a minimum level of performance that all pas-
senger vehicle tires must meet under the Fed-
eral Motor Safety Standard No. 109. Grades B
and A represent higher levels of performance
on the laboratory test wheel than the minimum
required by law.
WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, under-
inflation, or excessive loading, either sepa-
rately or in combination, can cause heat
buildup and tire failure.

10 Index
10
368
Disconnecting the front passenger’s air-
bag....................................................... 26, 27
Dome lighting............................................. 96
Door mirrors............................................. 103
Driver alert............................................... 179
Driver distraction warning.......................... 13
Driving economically................................ 262
Driving in cold weather............................ 264
Driving through water..............................263
E
ECC.........................................140, 142, 143
Economical driving.................................. 262
Electric parking brake.............................. 121
Electronic Climate Control.......140, 142, 143
air distribution table............................ 144
Interior Air Quality System.................. 143
ventilated seats................................... 140
Emergency locking retractor...................... 37
Emergency starting.................................. 113
Emergency towing...........................283, 284
Emission inspection readiness................ 317Engine
overheating........................................... 79
specifications...................................... 356
starting................................................ 111
switching off....................................... 113
Engine compartment overview................319
Engine oil
checking............................................. 320
low pressure warning light.............. 77, 78
specifications...................................... 357
volumes.............................................. 358
Environment............................................... 12
Eyelets for anchoring loads..................... 273
F
Federal Clean Air Act............................... 316
Floor mats
cleaning.............................................. 346
placing correctly................................. 111
Floor rails................................................. 273
Fluid specifications.................................. 359
Fog lights
front, changing bulbs.......................... 328
front/rear............................................... 94Four C (active chassis system)................150
Front airbags.............................................. 22
disconnecting passenger’s side air-
bag.................................................. 26, 27
Front fog lights........................................... 94
changing bulbs................................... 328
Front park assist.............................. 185, 187
Front seats...........................................84, 86
heated................................................. 140
Fuel filler cap........................................... 269
Fuel filler door, opening........................... 268
Fuel level warning light.............................. 77
Fuel requirements............................ 266, 267
Fuel tank volume.....................................359
Fuses...............................336, 337, 340, 343
G
Garage door opener
HomeLink® Wireless Control System. 108
Gasoline requirements............................. 267
Gas tank volume...................................... 359
Gauges...................................................... 75

10 Index
10
373
T
Tailgate
driving with it open.............................262
locking/unlocking.................................. 66
power operated.................................. 271
wiper/washer........................................ 99
Tailgate wipers......................................... 332
Taillights, changing bulbs........................ 328
Temporary spare tire............................... 301
Three-way catalytic converter................. 269
Tire designations.....................................294
Tire inflation pressure..............................293
Tire Pressure Monitoring System....311, 312
indicator light........................................ 77
Tires.........................................................288
age...................................................... 288
changing from summer to winter........ 289
glossary of terms................................ 296
improving economy............................ 288
inflation pressure................................ 291
inflation pressure table.......................293
load ratings......................................... 292
rotation............................................... 289
snow...................................................300
spare................................................... 301specifications...................................... 292
speed ratings...................................... 292
storing................................................. 289
studded............................................... 300
tire pressure monitoring system......... 311
tread wear indicator............................ 290
uniform tire quality grading................. 299
Top tether anchors (child restraint sys-
tems).......................................................... 47
Touching up paint.................................... 347
Towing a trailer................................280, 281
trailer hitch.......................................... 281
Towing the vehicle........................... 283, 284
Traction control........................................ 148
Trailer towing...................................280, 281
trailer hitch.......................................... 281
Transmission
general description.....................115, 116
oil........................................................ 359
shiftlock override................................ 116
Tread wear indicator................................ 290
Trip computer.......................................... 146
Trip odometers.......................................... 80
Trips, long distance................................. 264Turn signals............................................... 95
changing bulbs................................... 327
indicator lights...................................... 77
Two-stage booster cushion....................... 48
U
Uniform Tire Quality Grading...................299
Unlocking the tailgate................................ 66
Unlocking the vehicle..........................56, 65
Upholstery care....................................... 345
V
Vanity mirror............................................ 199
changing bulbs................................... 329
Vehicle dimensions
XC70................................................... 354
Vehicle Event Data..................................... 11
Vehicle loading................................271, 297
roof loads............................................ 275
Vehicle maintenance................................ 316
performed by the owner.....................317
Vehicle weights........................................ 355