2004 VOLVO XC70 snow chains

2004 VOLVO XC70
The stability systems consist of a number of functions:
The following two functions are common to both STC/DSTC
1. Traction control (TC)
This function is designed to help reduce wheel spin by transferring powe\
r from a drive wheel that begins
to lose traction to the wheel on the opposite side of the car (on the s\
ame axle). TC monitors and
compares the rotational speed of the drive wheels. If one of the drive w\
heels shows a tendency to spin,
the difference in speed is immediately detected. This triggers the Anti-\
lock Brake System, which brakes
the spinning wheel until the difference in rotational speed is corrected\
.
TC is most active at low speeds, and a pulsating sound will be audible w\
hen the system is regulating
wheel spin. This is quite normal.
This is one of the STC/DSTC's permanent functions and is not affected wh\
en the button on the center
control panel is pressed.
2. Spin control (SC)
The spin control function is designed to help prevent the drive wheels f\
rom spinning while the car is
accelerating. This is done by temporarily reducing engine torque to the \
drive wheels, which helps
improve stability and 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 STC/DSTC button on the center control panel for at \
least a half a second.
When the SC function has been switched off:
l The text window (see page 27) will briefly display "SPIN CONTROL OFF"
l The LED in the STC/DSTC button will be off.
The following two functions are only available with DSTC:
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 car shows a tendency to skid or slide laterally. Th\
is is done by activating the Anti-
lock Braking System. A pulsating sound will be audible when the function\
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.
R-models only:
The AYC function can be deactivated. This is done by pressing the DSTC b\
utton on the center control
panel (see the illustration on
page 31) for approximately one second. This procedure must be repeated 5
times, after which "DSTC REDUCED FUNCTION" will be displayed in the text\
window. AYC will be
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Chapter 7 - Wheels and tires


pg.109 Wheels and tires

General information, Wear indicator, Tire economy, Flat
spots 110
Snow chains, Snow tires/studded tires 111
Inflation pressure, Vehicle loading, Spare tire 112
Uniform tire quality grading 113
Changing wheels 114

pg. 110 Wheels and tires
General information
Your vehicle is equipped with tires according to the tire information la\
bel on the inside of the fuel
filler door.
The following is an example of a tire designation code: 225/55 R16
225 = tire width in mm.
55 = tire profile. This is the relationship (in percent) between the sect\
ion height and width of the tire.
R = radial tires.
16 = diameter in inches.
The tires have good road holding characteristics and offer good handling\
on dry and wet surfaces. It
should be noted however that the tires have been developed to give these\
features on snow/ice-free
surfaces. Certain models are equipped with "all-season" tires, which provide a som\
ewhat higher
degree of road holding on slippery surfaces than tires without the "all-\
season" rating. However,
for optimum road holding on icy or snow covered roads - we recommend suitable winter tires on all
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2004 VOLVO XC70
spare tire other than the one that came with the car. The use of differe\
nt size wheels can seriously
damage your car's transmission or driveline.

pg. 111 Wheels and tires
Snow chains
Snow chains can be used on your Volvo with the following restrictions:
l Snow chains should be installed on front wheels only. Use only Volvo app\
roved snow chains.
l Special snow chains must be mounted on 215/55 R16. Consult your Volvo re\
tailer.
l If accessory, aftermarket or "custom" tires and wheels are installed and\
are of a size different than the
original tires and wheels, chains in some cases CANNOT be used. Sufficie\
nt clearances between chains
and brakes, suspension and body components must be maintained. Snow chai\
ns cannot be used on 17"
wheels*.
l Some strap-on type chains will interfere with brake components and there\
fore CANNOT be used.
l All Wheel Drive models:Snow chains should only be installed on the front wheels. Only chains
adapted for AWD models should be used.
Consult your Volvo retailer for additional snow chain information.
CAUTION:
l Check local regulations regarding the use of snow chains before installi\
ng.
l Always follow the chain manufacturer's installation instructions careful\
ly. Install chains as tightly as
possible and retighten periodically.
l Never exceed the chain manufacturer's specified maximum speed limit. In \
no case should you exceed
31 mph (50 km/h).
l Avoid bumps, holes or sharp turns when driving with snow chains.
l Vehicle handling can be adversely affected when driving with chains. Avo\
id fast maneuvering and
hard braking. Never allow the wheels to lock up during braking.
* V70R - Volvo offers specially designed chains that can be used on 225/\
45/R17 tires.
Snow tires, studded tires **
Tires for winter use:
Owners who live in or regularly travel through areas with sustained peri\
ods of snow or icy driving
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2004 VOLVO XC70
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VOLVO XC70
INDEX


pg. 173 - 176 Index

A
ABS
19
ABS - warning light
29
Accessory lights
31
Active chassis system
31, 95
Adjusting the steering wheel
35
Advanced User Mode (AUM) - radio
161
Air conditioning
48 - 51
Air filter - engine
134
Air vents
46
Airbag (SIPS)
8
Airbag (SRS)
4
Alarm
80, 81
Alarm - "panic" function
80
All Wheel Drive
- general information
94
- using snow chains
111
ALR/ELR
14
Anti-lock Brake System (ABS)
19
Anti-lock Brake System - warning light
29
Antifreeze
105, 133
Approach lighting
76
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2004 VOLVO XC70
Armrest (center) - 3-section rear seat 65
Ashtray
39, 59
Audio systems
153
- cassette deck
164
- CD player
162
- HU-613 - overview
154
- HU-803 - overview
155
- specifications
165
AUM (Advanced User Mode) - radio
161
Automatic car washing
130
Automatic Locking Retractor (ALR)
14
Automatic transmission
90, 91
- Cold starts
91
- Geartronic
92, 93
- Kickdown
91, 92
- Sport mode
93
Auxiliary socket
31, 39
AWD
- general information
94
- using snow chains
111
B
Backrest (center) - 3-section rear seat
64
Battery
105, 150
Battery maintenance
140, 141
- Replacing the battery
141
- Ventilation hose
141
Booster cushion
12, 16
Brake failure warning light
28
Brake fluid
139
Brake system
18
Bulbs (list)
150
Bulbs - replacing
122-127
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2004 VOLVO XC70
Securing cargo 68
Servicing
135
Shiftlock
87, 90, 92
Side direction indicator - replacing
125
Side impact airbag system (SIPS)
8
Sideview mirrors
41
Sideview mirrors - heated
38
Sideview mirrors - memory function
41
Snow chains
111
Snow tires
111
Spare tire
72, 112
Spark plugs
134, 149
Specifications
147
Speed-sensitive power steering
96
Sport mode (automatic transmission)
93
SRS
6
SRS diagnostic system
28
Stability Traction Control (STC)
19, 31
Stain removal
130
Start inhibitor (immobilizer)
76, 87
Starting the engine
87, 88
Steel grid
69
Steering wheel adjustment
35
Steering wheel lock
35
Stop and Store bag
64
Storage compartments
59
Storage in the glove compartment
60
Studded tires
111
Subwoofer
72, 168
Supplemental Restraint System
4, 28
Suspension
149
Switches in center console
31
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