2011 VOLVO XC90 brake sensor

Introduction
Environment
14
Volvo and the environment
Volvo is committed to the well being of its cus-
tomers. As a natural part of this commitment,
we care about the environment in which we all
live. Caring for the environment means an
everyday involvement in reducing our environ-
mental impact. Volvo's environmental activities
are based on a holistic view, which means we
consider the overall environmental impact of a
product throughout its complete life cycle. In
this context, design, production, product use,
and recycling are all important considerations.
In production, Volvo has partly or completely
phased out several chemicals including CFCs,
lead chromates, asbestos, and cadmium; and
reduced the number of chemicals used in our
plants 50% since 1991.
Volvo was the first in the world to introduce into
production a three-way catalytic converter with
a Lambda sond, now called the heated oxygen
sensor, in 1976. The current version of this
highly efficient system reduces emissions of
harmful substances (CO, HC, NOx) from the
exhaust pipe by approximately 95 – 99% and
the search to eliminate the remaining emis-
sions continues. Volvo is the only automobile
manufacturer to offer CFC-free retrofit kits for
the air conditioning system of all models as far
back as the 1975 model 240. Advanced elec-
tronic engine controls and cleaner fuels are
bringing us closer to our goal. In addition tocontinuous environmental refinement of con-
ventional gasoline-powered internal combus-
tion engines, Volvo is actively looking at
advanced technology alternative-fuel vehicles.
When you drive a Volvo, you become our part-
ner in the work to lessen the car's impact on
the environment. To reduce your vehicle's
environmental impact, you can:
•Maintain proper air pressure in your tires.
Tests have shown decreased fuel econ-
omy with improperly inflated tires.
•Follow the recommended maintenance
schedule in your Warranty and Service
Records Information booklet.
•Drive at a constant speed whenever pos-
sible.
•See a trained and qualified Volvo service
technician as soon as possible for inspec-
tion if the check engine (malfunction indi-
cator) light illuminates, or stays on after the
vehicle has started.
•Properly dispose of any vehicle-related
waste such as used motor oil, used batter-
ies, brake pads, etc.
•When cleaning your vehicle, please use
genuine Volvo car care products. All Volvo
car care products are formulated to be
environmentally friendly.
RecyclingAs part of Volvo’s commitment to the environ-
ment, it is essential for the vehicle to be recy-
cled in an environmentally sound way. Almost
the entire vehicle can be recycled and for that
reason, the vehicle’s final owner is requested
to contact a Volvo retailer for information about
approved and certified recycling facilities.

01 Safety
Supplemental Restraint System01
23 Supplemental Restraint System (SRS)
G027284
SRS warning light
As an enhancement to the three-point seat
belts, your Volvo is equipped with a Supple-
mental Restraint System (SRS). Volvo's SRS
consists of seat belt pretensioners, front air-
bags, side impact airbags, the occupant
weight sensor, and inflatable curtains. All of
these systems are monitored by the SRS con-
trol module. An SRS warning light in the instru-
ment panel (see the illustration) illuminates
when the ignition key is turned to position I, II,
or III, and will normally go out after approxi-
mately 7 seconds if no faults are detected in
the system.Where applicable, a text message
will also be displayed when the
SRS warning light illuminates. If
this warning symbol is not func-
tioning properly, the general warn-
ing symbol illuminates and a text message will
be displayed.
WARNING
•If the SRS warning light stays on after
the engine has started or if it illuminates
while you are driving, have the vehicle
inspected by a trained and qualified
Volvo service technician as soon as
possible.
•Never try to repair any component or
part of the SRS yourself. Any interfer-
ence in the system could cause mal-
function and serious injury. All work on
these systems should be performed by
an authorized Volvo service technician.
WARNING
If your vehicle has been subjected to flood
conditions (e.g. soaked carpeting/standing
water on the floor of the vehicle) or if your
vehicle has become flood-damaged in any
way, do not attempt to start the vehicle or
put the key in the ignition before discon-
necting the battery (see below). This may
cause airbag deployment which could result
in personal injury. Have the vehicle towed to
a trained and qualified Volvo service tech-
nician for repairs.
Automatic transmission:
Before attempting to tow the vehicle, use
the following procedure to override the
shiftlock system to move the gear selector
to the neutral position:
1. Switch off the ignition for at least
10 minutes and disconnect the battery.
2. Wait at least one minute.
3. Insert the key in the ignition and turn it
to position II
4. Press firmly on the brake pedal.
5.
Move the gear selector from P (Park) to
the N(Neutral) position.

06 Starting and driving
Front/rear park assist*
06
* Option/accessory, for more information, see Introduction.155
NOTE
•Front park assist is disengaged auto-
matically when the parking brake is
applied.
•If the vehicle is equipped with front and
rear park assist, both systems will be
deactivated by pressing the button.
Audible signals from the park assist
system
The Park Assist system uses an intermittent
tone that pulses faster as you come close to an
object, and becomes constant when you are
within approximately 1 ft (30 cm) of an object
in front of or behind the vehicle. If the volume
of another source from the audio system is
high, this will be automatically lowered.
If there are objects within this distance both
behind and in front of the vehicle, the signal
alternates between front and rear speakers.
Faults in the system
If the yellow warning symbol illu-
minates and PARK ASSIST
SERVICE REQUIRED is shown
on the information display, this
indicates that the system is not
functioning properly and has been disengaged.
Consult a trained and qualified Volvo service
technician.
CAUTION
In certain circumstances, the park assist
system may give unexpected warning sig-
nals that can be caused by external sound
sources that use the same ultrasound fre-
quencies as the system. This may include
such things as the horns of other vehicles,
wet tires on asphalt, pneumatic brakes,
motorcycle exhaust pipes, etc. This does
not indicate a fault in the system.
Cleaning the sensors
G026946
Park assist sensors
The sensors must be cleaned regularly to
ensure that they work properly. Clean them
with water and a suitable car washing deter-
gent.
Ice and snow covering the sensors may cause
incorrect warning signals.
NOTE
If the sensors are obstructed by e.g., dirt,
snow, or ice, this could result in false warn-
ing signals from the park assist system.

12 Index
12
294
1, 2, 3 ...
12-volt sockets.......................................... 79
A
A/C (air conditioning)...........................98, 99
ABS.......................................................... 149
Accessory installation warning.................. 15
Airbag system............................................ 23
Air cleaner................................................ 213
Air conditioning.......................................... 94
Air distribution...................................... 96, 99
Air quality sensor....................................... 98
Air vents..................................................... 96
Alarm........................................................ 131
All Wheel Drive......................................... 148
All Wheel Drive – towing.......................... 157
Anti-lock brake system
warning light......................................... 60
Anti-lock Brake System (ABS)................. 149
Ashtray..................................................... 114Audio
system introduction............................ 244
Audio system
HD digital radio................................... 251
Rear seat entertainment..................... 270
Sirius satellite radio............................255
AUTO (climate control)....................... 99, 100
Automatic transmission........................... 144
Autostart..........................................139, 141
AUX (audio system).................................259
Average speed........................................... 75
AWD......................................................... 148
B
Bass......................................................... 247
Battery..................................................... 211
maintenance....................................... 220
specifications...................................... 287
Battery – replacing................................... 221
Belt check................................................ 212
Black box................................................... 13
Blind Spot Information System (BLIS)..... 165
Blower (fan).............................................. 100Bluetooth cell phone connection............. 265
Booster cushion
accessory............................................. 46
integrated.............................................. 51
Brake fluid................................................ 218
Brake system........................................... 149
Bulbs........................................................ 223
Bulbs, replacing....................................... 223
C
Capacities, fluids..................................... 282
Capacity weight....................................... 182
Cargo area cover..................................... 121
Cargo grid................................................ 120
Cargo net................................................. 118
Catalytic converter, three-way................. 289
CD Pause................................................. 261
Cell phone, hands-free connection......... 265
Center console buttons............................. 64
Central locking system - remote key....... 125
Changing a wheel.................................... 193
Changing coolant....................................212

12 Index
12
297
K
Key (ignition switch) positions................. 141
Keys......................................................... 124
L
Label information..................................... 276
Lighting panel............................................ 67
Load carriers............................................ 162
Locking steering wheel............................ 141
Locking the car........................................ 128
Locks, child safety................................... 130
Long distance trips.................................. 163
Low beam headlight.................................. 70
M
Maintenance............................................ 208
Maintenance, periodic............................. 209
Malfunction indicator light......................... 61Mirrors
door, folding......................................... 64
power door........................................... 84
rearview, auto-dim function.................. 83
Moonroof................................................... 86
Motor oil
checking............................................. 215
MP3 player, connecting........................... 259
Multifilter with air quality sensor................ 98
O
OBD II...................................................... 209
Occupant safety........................................ 18
Oil
checking............................................. 215
Oil quality................................................. 214
Onboard Diagnostic System (OBD II)...... 209
On Call Roadside Assistance.................. 292
Owner maintenance................................. 209
P
Paint - color code....................................204
Panel lighting, instrument.......................... 68
Park assist.......................................154, 155
Parking brake........................................... 151
warning symbol.................................... 60
Parking lights............................................. 67
Passenger’s side front airbag, disabling. . . 28
Periodic owner-performed maintenance. 209
Permissible axle weight........................... 182
Polishing.................................................. 201
Power moonroof........................................ 86
Power seat............................................... 105
Power steering fluid................................. 218
R
Radiator................................................... 213
Radio
Sirius satellite radio............................255
Radio functions........................................ 246
HD digital radio................................... 251
Rain sensor - windshield wipers................ 72