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
file:///K|/ownersdocs/2004/2004_XC70/04xc70_01b.htm (13 of 15)12/30/20\
06 4:32:55 PM
2004 VOLVO XC70
automatically reactivated the next time the ignition is switched on. WARNING!
With AYC disabled, the car's handling and stability characteristics will\
be altered.
4. Emergency Brake Assistance (EBA)
The EBA function is an integrated part of the DSTC system. EBA is design\
ed to provide full brake
effect immediately in the event of sudden, hard braking. The system is a\
ctivated by the speed with which
you depress the brake pedal.
When the EBA system is activated, the brake pedal will go down and press\
ure in the brake system
immediately increases to the maximum level.
pg. 21 STC/DSTC
Maintain full pressure on the brake pedal in order to utilize the system\
completely. EBA is automatically
deactivated when the brake pedal is released. When the car has been park\
ed for some time, the brake
pedal may sink more than usual when the engine is started. This is norma\
l and the pedal will return to its
usual position when it is released.
The STC/DSTC button
The STC/DSTC button in the center control panel (see page 31) is used to switch the Spin Control (SC)
function on or off
NOTE: AYC (on models equipped with this function) will also be reduced, but\
not switched off, if SC
is switched off.
The button must be pressed for at least a half second to prevent SC from\
being switched off
inadvertently.
When the function has been switched off, the green indicator lamp in the\
button will go out and "STC/
DSTC SPIN CONTROL OFF" will be displayed in the text window.
All STC/DSTC functions are (re)activated each time the engine is start\
ed.
The Stability Control indicator light
file:///K|/ownersdocs/2004/2004_XC70/04xc70_01b.htm (14 of 15)12/30/20\
06 4:32:55 PM
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
file:///K|/ownersdocs/2004/2004_XC70/04xc70_01b.htm (15 of 15)12/30/20\
06 4:32:55 PM
2004 VOLVO XC70
information.
If the engine temperature remains high, check coolant level - see
page 133.
4 Trip odometer/reset button
The trip odometer is used for measuring shorter distances. The last digi\
t indicates 1/10 mile/kilometer. Press
the button quickly to toggle between trip odometers 1 and 2. Hold in the\
button for more than 2 seconds to
reset.
5 Odometer
6 Speedometer
7 General warning light (see
page 28).
8 High beam indicator light
9 Tachometer
Indicates engine speed in thousands of rpm. Do not drive for long with t\
he needle in the red section. The
engine has an built-in function preventing too high an engine speed. Whe\
n this function operates, you may
discern some pulsation, which is normal.
10 Gear and driving mode indicator
The currently selected driving mode is displayed here. If you use the Ge\
artronic function on the automatic
transmission, the currently selected gear will be displayed.
11 Ambient temperature indicator
This display indicates the air temperature outside your car. A "snowflak\
e" symbol in the text window is
displayed when the temperature is in the range of 23 - 36° F (-5 - +\
2° C).
Please note that this symbol does not indicate a fault with your car.
At low speeds or when the car is not moving, the temperature readings ma\
y be slightly higher than the actual
ambient temperature.
12 Clock/reset button
Turn the button to adjust the clock.
13 Fuel gauge
The fuel tank holds approximately:
Front wheel drive models:18.5 US gal. (70 liters)
All Wheel Drive models: 19 US gal. (72 liters)
V70R: 18 US gal. (68 liters)
file:///K|/ownersdocs/2004/2004_XC70/04xc70_02a.htm (5 of 14)12/30/200\
6 4:32:56 PM
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).
file:///K|/ownersdocs/2004/2004_XC70/04xc70_02a.htm (9 of 14)12/30/200\
6 4:32:56 PM
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.
file:///K|/ownersdocs/2004/2004_XC70/04xc70_02a.htm (11 of 14)12/30/20\
06 4:32:56 PM
2004 VOLVO XC70
5. Not in use
6. This button is used to temporarily disconnect alarm sensors. See
page 81 for further information.
7. Not in use
8. Auxiliary socket
This 12 volt socket can be used to plug in certain accessories such as c\
ellular telephones, etc. The ignition
key must be in position 1 (or higher) for the auxiliary socket to func\
tion.
NOTE: The auxiliary sockets can also be used for cigarette lighters, which are\
available at your Volvo
retailer.
Four-C active chassis system: R-models only:
Please see
page 95 for information on adjusting the active chassis settings.
* Standard on all models except the T5 turbo.
** Standard on the T5 turbo/R-models, optional on all other models.
pg. 32 Trip computer (option)
Trip computer
The trip computer stores information gathered from several systems in yo\
ur car and has four menus that can
be displayed in the text window.
l Driving distance on current fuel reserve
l Average fuel consumption
l Current fuel consumption
l Average speed
file:///K|/ownersdocs/2004/2004_XC70/04xc70_02a.htm (12 of 14)12/30/20\
06 4:32:56 PM
2004 VOLVO XC70
l Current speed in mph (Canadian models only)
NOTE: Warning messages from the car's monitoring systems will override the tri\
p computer function. If a
warning message is displayed in the text window while you are using the \
trip computer, you must
acknowledge the message by pressing button A. Press button A again to re\
turn to the trip computer function.
Trip computer controls and functions
The four* trip computer functions can be accessed by twisting control B \
one step at a time in either direction.
Twisting a fifth time** returns you to the original function.
The trip computer can be reset (current data will be erased from system\
memory) by pressing RESET (button
C).
1. Driving distance on current fuel reserve
This function shows the approximate distance that can be driven on the f\
uel remaining in the tank. This
calculation is based on average fuel consumption during the last 12 mile\
s (20 km) of driving and the amount
of fuel remaining in the tank when the reading was taken. When the drivi\
ng distance on current fuel reserve is
less than 12 miles (20 km), "----" will be displayed in the text windo\
w.
2. Average fuel consumption
This value indicates fuel consumption since the last time the trip compu\
ter was reset (by pressing RESET,
button C). When the engine is switched off, information on fuel consump\
tion is stored and remains in system
memory until the RESET (button C) is pressed again.
3. Current fuel consumption
This value indicates the current fuel consumption, based on readings tak\
en once per second. When the car is
not moving, "----" will be displayed.
4. Average speed
This value indicates average speed since the last time the trip computer\
was reset (by pressing RESET, button
C). When the engine is switched off, information on average speed is st\
ored and remains in system memory
until the RESET (button C) is pressed again.
5. Current speed in miles per hour (Canadian models only)
This function provides the driver with an instantaneous conversion of th\
e car's current speed from km/h to
mph.
NOTE: Trip computer readings may vary slightly depending on the circumference \
of the tires on the car.
*Five functions on Canadian models
**A sixth time on Canadian models
file:///K|/ownersdocs/2004/2004_XC70/04xc70_02a.htm (13 of 14)12/30/20\
06 4:32:56 PM