2004 VOLVO XC70 traction control

2004 VOLVO XC70
Stability Traction Control (STC) 20
Dynamic Stability Traction Control
(DSTC) 20


pg. 2 Seat belts
Seat belts
Always fasten the seat belts before you drive or ride. A chime will soun\
d several times if the
driver's seat belt is not fastened.
To buckle:
Pull the belt out far enough to insert the latch plate into the receptac\
le until a distinct click is heard. The
seat belt retractor is normally "unlocked" and you can move freely, prov\
ided that the shoulder belt is not
pulled out too far. The retractor will lock up as follows:
l if the belt is pulled out rapidly
l during braking and acceleration
l if the vehicle is leaning excessively
l when driving in turns
For the seat belt to provide maximum protection in the event of an accid\
ent, it must be worn correctly.
When wearing the seat belt remember:
l The belt should not be twisted or turned.
l The lap belt must be positioned low on the hips (not pressing against t\
he abdomen).
Make sure that the shoulder belt is rolled up into its retractor and tha\
t the shoulder and lap belts are taut.
The seat belts are equipped with tensioners that reduce slack in the sea\
t belts. These tensioners are
triggered in situations where the airbags deploy.
The front seat belts also include a tension reducing device which, in th\
e event of a collision, limits the
peak forces exerted by the seat belt on the occupant.
Before exiting the car, check that the seat belt retracts fully after be\
ing unbuckled. If necessary, guide
the belt back into the retractor slot.
NOTE: Legislation in your state or province may mandate seat belt usage.
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2004 VOLVO XC70
To obtain optimal effect from the ABS system, constant pressure should b\
e kept on the brake
pedal, keep constant pressure on the brake pedal. Do not pump the brake \
pedal.
The switching of the ABS modulator will be audible and the brake pedal w\
ill pulsate during braking.
Please be aware that ABS does not increase the absolute braking potentia\
l of the vehicle. While control
will be enhanced, ABS will not shorten stopping distances on slippery su\
rfaces.
ABS with EBD (Electronic Brake Force Distribution)
EBD is an integrated part of the ABS system. EBD regulates the hydraulic\
pressure to the rear brakes to
help provide optimal braking capacity. The brake pedal will pulsate duri\
ng braking, which is normal.
If the BRAKE and ABS warning lights come on at the same time, this could\
indicate a fault in the
brake system.
l Stop the car in a suitable place and switch off the engine.
l Restart the engine.
l If both warning lights go off, no further action is required.
l If both lights are still on after the engine has been restarted, switch \
off the engine again and check the
brake fluid level (see
pages 139 and for the location of the brake fluid reservoir).
WARNING!
If the fluid level is below the MIN mark in the reservoir, DO NOT DRIVE.\
Have the car towed to an
authorized Volvo retailer and have the brake system inspected.

l If the brake fluid level is above the MIN mark, drive carefully to an au\
thorized Volvo retailer and
have the brake system inspected.
pg. 20 STC/DSTC
Stability Traction Control (STC)*/ Dynamic Stability Traction
Control (DSTC)**
* Standard on all models except the T5 turbo and R-models.
** Standard on T5 turbo and R-models, option on all other models
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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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2004 VOLVO XC70
The Stability Control indicator light will come on for approximately 2 s\
econds when the ignition is
switched on as the system performs a self-diagnostic test.
The Stability Control indicator light will flash when:
l Traction Control is actively functioning to help avoid drive-wheel spin.\

l Spin Control is actively functioning to help avoid loss of traction duri\
ng acceleration.
l Active Yaw Control is actively functioning to help avoid skids or latera\
l slides.
The warning symbol in the instrument panel
A steady yellow glow indicates:
l That the system has been automatically disengaged due to a fault. "ANTI \
SKID SERVICE
REQUIRED" be displayed in the text window. An authorized Volvo retailer \
should check the system.
l The system has been temporarily switched off due to high brake temperatu\
re. "TRACTION
CONTROL TEMPORARILY OFF" will be displayed.
NOTE: The system will automatically switch on again when the brakes have cool\
ed.



Contents | Top of Page
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2004 VOLVO XC70
Stability Traction Control (STC) system (option), or Dynamic
Stability and Traction Control (DSTC) system (option)
An indicator light will flash when STC or DSTC is actively working to st\
abilize the car. See pages 20-21 for
more detailed information.

Turn signal indicator - trailer (certain models)
If you are towing a trailer, this light will flash simultaneously with t\
he turn signals on the trailer. If the light
does not flash when signaling, neither the trailer's turn signals nor th\
e car's turn signals are functioning.

Seat belt reminder
This symbol lights up to indicate that the driver has not fastened his/h\
er seat belt.


pg. 30 Text information window
Messages in the text window
When a warning light in the instrument panel comes on, a message is also\
displayed in the text window. After
you have read the message, you can erase it by pressing button A (see i\
llustration above).
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2004 VOLVO XC70
1) Orange warning triangle, see page 28.
2) Red warning triangle, see
page 28.

pg. 31 Switches in the center console

The positions of these buttons may vary, depending on the specifications\
of your car
1. Not in use
2. Not in use
3. Not in use
4. Stability Traction Control (STC)*/Dynamic Stability Traction Contro\
l (DSTC)**
Press this switch for at least half a second to turn the Spin Control (\
SC) function of the STC/DSTC system on
or off.
R-models only:
The Active Yaw Control function can be deactivated. See
page 20 for more information.
An LED in the switch will light up to indicate that the system is on. Se\
e
pages 20-21 for more information on
STC/DSTC. The SC function should be switched off if you, for any reason,\
temporarily have to drive with
tires of different dimensions (e.g., spare tire).
To help reduce the risk that the SC function is turned off inadvertently\
, the switch must be held in for at least
half a second to disable this function. " STC/DSTC SPIN CONTROL OFF" wil\
l be displayed in the text
window.
WARNING!
Please be aware that the car's handling characteristics may be affected \
if the Spin Control function is
switched off.
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2004 VOLVO XC70
NOTE: Certain models may be equipped with a full-size spare tire. When used, i\
t should be inflated to
the same pressure as the tire it is replacing.
*Please note that the tire information label indicates pressure for both\
comfort and fuel economy.

pg. 113 Wheels and tires
Uniform tire quality grading
ALL PASSENGER CAR TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS
IN ADDITION TO THESE GRADES
Quality grades can be found, where applicable, on the tire sidewall betw\
een the tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
TREADWEAR
The treadwear grade is a comparative rating based on the wear rate of th\
e tire when tested under
controlled conditions on a specified government test course. For example\
, a tire graded 150 would wear
one and one half (1 1/2) times as well on the government course as a t\
ire graded 100. The relative
performance of tires depends upon the actual conditions of their use, ho\
wever, and many depart
significantly from the norm due to variation in driving habits, service \
practices and differences in road
characteristics and climate.
TRACTION
The traction grades, from highest to lowest, are AA, A, B, and C, as mea\
sured under controlled
conditions on specified government test surfaces of asphalt and concrete\
. A tire marked C may have
poor traction performance. 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.
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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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