brake sensor VOLVO XC90 2004 Owners Manual

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2004 VOLVO XC90
In production, Volvo has partly or completely phased out several chemica\
ls including chloro-fluorocarbons
(CFCs), lead chromates, naphtanates, asbestos, mercury and cadmium; an\
d reduced the amount of chemicals
used in our plants 50% since 1991.
Volvo was the first in the world to introduce into production a three-wa\
y catalytic converter with Lambda
Sond, now called oxygen sensor, in 1976. The current version of this hig\
hly efficient system reduces emissions
of harmful substances (CO, HC, NOx) from the exhaust pipe by approxima\
tely 95% and the search to eliminate
the remaining emissions continues. Volvo is the only automobile manufact\
urer to offer CFC-free retrofit kits
for the air conditioning system of all models as far back as the 1975 Vo\
lvo 240. Advanced electronic engine
controls, refined purification systems and cleaner fuels are bringing us\
closer to our goal.
After Volvo vehicles and parts have fulfilled their use, recycling is th\
e next critical step in completing the life
cycle. The metal content is about 75% of the total weight of a vehicle, \
which makes the vehicle among the most
recycled industrial products. In order to have efficient and well contro\
lled recycling, many Volvo variants have
printed dismantling manuals, indicating the weight and material of indiv\
idual components. For Volvo, all
homogeneous plastic parts weighing more than 1.7 oz. (50 grams) are ma\
rked with international symbols that
indicate how the component is to be sorted for recycling.
In addition to continuous environmental refinement of conventional gasol\
ine-powered internal combustion
engines, Volvo is actively looking at advanced technology alternative-fu\
el vehicles.
When you drive a Volvo, you become our partner in the work to lessen the\
car's impact on the environment.
To reduce your vehicle's environmental impact, you can:
l Maintain proper air pressure in your tires. Tests have shown decreased f\
uel economy with improperly
inflated tires.
l Follow the recommended maintenance schedule in your Warranty and Service\
Records Information booklet.
l Drive at a constant speed.
l See an authorized Volvo retailer as soon as possible for inspection if t\
he check engine (malfunction
indicator) lamp illuminates, or stays on after the vehicle has started.\

l Properly dispose of any vehicle-related waste such as used motor oil, us\
ed batteries, brake pads, etc.
l When cleaning your car, use Volvo's own car care products, all of which \
have systematically been adapted to
the environment.
For additional information regarding the environmental activities in whi\
ch Volvo Cars of North America, LLC.
and Volvo Car Corporation are involved, visit our Internet Home Page at:\

http://www.volvocars.com
PremAir®
On the surface of the radiator in the engine compartment, there is a spe\
cial coating called PremAir®. PremAir®
works as a catalytic converter, converting most of the ground-level ozon\
e passing through the radiator into
oxygen, thereby reducing harmful ground-level ozone.
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2004 VOLVO XC90
WARNING!
The IC system is a supplement to the Side Impact Protection System. It i\
s not designed to deploy
during collisions from the front or rear of the vehicle. The Inflatable \
Curtains are designed to deploy
only during certain side-impact collisions, depending on the crash sever\
ity, angle, speed and impact.
The Inflatable Curtains are not designed to deploy in all side impact si\
tuations.
Never try to open or repair any components of the IC system. This should\
be done only by an
authorized Volvo service technician.
In order for the IC to provide its best protection, both front seat occu\
pants and all outboard rear seat
occupants should sit in an upright position with the seat belt properly \
fastened; adults using the seat
belt and children using the proper child restraint system. Only adults s\
hould sit in the front seats.
Children must never be allowed in the front passenger seat. See
page 20 for guidelines. Failure to
follow these instructions can result in injury to the vehicle occupants \
in an accident.
When the backrest(s) in the rear seat(s) are folded down, the vehicl\
e should not be loaded to a level
higher than 2 inches (5 cm) below the upper edge of the side windows. \
Objects placed higher than
this level could impede the function of the Inflatable Curtain.
pg. 13 Safety
Roll-over Protection System
Volvo's Roll-over Protection System has been developed to help prevent t\
he vehicle from rolling over in
the event of sudden evasive maneuvers, skids, etc and to offer enhanced \
protection if a roll-over occurs.
The system works in two ways:
l The stabilizing system Roll Stability Control (RSC) acts to minimize b\
ody roll.
l The system provides additional protection with a reinforced body, Inflat\
able Curtains for all outboard
seating positions, and seat belt pretensioners for all seating positions\
.
RSC uses a gyro-sensor that registers the vehicle's angle of inclination\
and the speed at which this angle
changes. Using this information, the control module calculates the risk \
of a roll-over. If there is an
imminent roll-over risk, the Dynamic Stability and Traction Control (DS\
TC) system is activated, engine
speed is reduced, and the brakes are applied to one or more of the wheel\
s until the vehicle has regained
stability.
If a roll-over occurs, RSC triggers the seat belt pretensioners and then\
deploys the Inflatable Curtains
(which remain inflated for approximately 5 seconds). These curtains ar\
e designed to follow the contours
of the side windows so that they position themselves between the occupan\
ts' heads and the sides of the
vehicle.
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2004 VOLVO XC90
improve tractive force.
Under certain circumstances, such as when driving with snow chains, or d\
riving in deep snow or loose
sand, it may be advisable to temporarily switch off this function for ma\
ximum tractive force. This is
done by pressing the DSTC button on the center control panel for at leas\
t a half a second.
When the SC function has been switched off:
l The text window will briefly display "DSTC SPIN CONTROL OFF"
l The LED in the DSTC button will be off.
3. Active Yaw Control (AYC)
This function helps maintain directional stability, for example when cor\
nering, by braking one or more
of the wheels if the vehicle shows a tendency to skid or slide laterally\
. This is done by activating the
Anti-lock Braking System. A pulsating sound will be audible when the fun\
ction is active, which is quite
normal. If you apply the brakes while this function is active, the brake\
pedal will feel stiffer than usual.
This is also one of the DSTC system's permanent functions and is not aff\
ected when the DSTC button on
the center control panel is pressed.
4. Roll Stability Control (RSC)
RSC utilizes a gyro-sensor to monitor the vehicle's angle of inclination\
, and the rate at which this angle
changes. If necessary, RSC activates the Anti-lock Brake System to brake\
one or more of the wheels to
help maintain stability. A pulsating sound will be audible when the func\
tion is active, which is quite
normal. If you apply the brakes while this function is active, the brake\
pedal will feel stiffer than usual.
This is one of the DSTC system's permanent functions and is not affected\
when the DSTC button on the
center control panel is pressed.
The DSTC button
The DSTC button in the center control panel is used to switch the Spin C\
ontrol (SC) function on or off.
The button must be pressed for at least a half second to prevent SC from\
being switched off
inadvertently.
When the system has been switched off, the green indicator lamp in the b\
utton will go out and "DSTC
SPIN CONTROL OFF" will be displayed in the text window.
All DSTC functions are (re)activated each time the engine is started.
pg. 96 Starting and driving
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2004 VOLVO XC90
3. -
4. Oxygen sensors 20
5. Crankcase ventilation heater, solenoid valves 10
6. Mass air flow sensor, engine control module, injectors 15
7. -
8. A/C compressor, accelerator pedal position sensor, E-box
fan 10
9. Horn 15
10. Tailgate washer 10
11. A/C compressor, ignition coils 20
12. Brake light contact 5
13. Windshield wipers 25
14. ABS/DSTC 30
15. Headlight washers 25
16. Windshield washers 15
17. Low beam, right 10
18. Low beam, left 10
19. ABS/DSTC 30
20. High beam, left 15
21. High beam, right 15
22. Starter motor 25
23. Engine control module, system relay 5
24. -
pg. 145 Maintenance
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2004 VOLVO XC90
2 0 0 4
VOLVO XC90
Index

pg. 183-186 Index
A
A/C (air conditioning)
50
ABS
ii, 25, 96
Adjustable steering wheel
30
Advanced user functions
172
Air bags - dual threshold/stage
5
Air cleaner
128
Air distribution
47, 50
Air Quality sensor
51
Air vents
47
Airbag - Side Impact (SIPS)
10
Airbags
4
Airbags (front)
4
Alarm
73, 80
All Wheel Drive
94
All Wheel Drive - towing
101
Anti-lock Brake System (ABS)
ii, 25
Approach lighting
33
Ashtray
39, 64
Audio
159
AUTO
49
AUTO (climate control)
49
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2004 VOLVO XC90
Parking brake 27, 38
Parking lamps
31
Parking lights
31
Polishing
119
Power seat
56
Power steering fluid
130
Power moonroof
43
PROPOSITION 65 WARNING
102, 136
R
Radiator
128
Rain sensor
34
Rain sensor - windshield wipers
34
Reading lamps
61
Rear fog lamps
31
Rear seat air condition
29
Rear suspension
153
Rear window defroster
35
Rearview mirror/door mirrors
42
Recirculation
50
REDUCE SPEED
28
Refrigerant (A/C system)
46
Refueling
84, 86
Remote control - central locking system
75
Reporting safety defects
21
Reverse warning system
29
Roadholding
90
Roll Stability Control (RSC)
97
S
Safety
1
Safety defects - reporting
21
Seat belt
2
Seat belt maintenance
21
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