2009 VOLVO XC70 service

04 Comfort and driving pleasure
Climate system
04``125
your Warranty and Service Records Informa-
tion booklet, or consult a trained and qualified
Volvo service technician for these intervals.
The filter should be replaced more often when
driving under dirty and dusty conditions. The
filter cannot be cleaned and therefore should
always be replaced with a new one.
NOTE
There are different types of cabin air filters.
Ensure that the correct type is installed.Interior Air Quality System (IAQS)A multifilter helps reduce gases and particles
in the incoming air, thereby reducing the levels
of odors and contaminants entering the vehi-
cle. The air quality sensor detects increased
levels of contaminants in the outside air. When
the air quality sensor detects contaminated
outside air, the air intake closes and the air
inside the passenger compartment is recircu-
lated, i.e. no outside air enters the vehicle. The
filter also cleans recirculated passenger com-
partment air.
NOTE
Contact your Volvo retailer for IAQS air filter
replacement intervals.
Menu settingsThe default settings for three of the climate
system's functions can be changed in the
menu system, see page 120:•
Blower speed in automatic mode, see
page 127.
•
Recirculation timer for passenger com-
partment air, see page 127.
•
Automatic rear window defrosting, see
page 97.
The functions can also be returned to factory
settings in the menu system.
Air distribution
G017699
The incoming air is distributed from 20 different
vents in the passenger compartment.Air distribution is fully automatic in AUTO
mode.
If desired, air distribution can be controlled
manually, see page 130.
Air vents in the dashboard
G021367
OpenClosedHorizontal airflowVertical airflow
Direct the outer air vents toward the side win-
dows to defrost.

04 Comfort and driving pleasure
Stability system
04``155 Introduction
The Dynamic Stability and Traction Control
system (DSTC) consists of a number of func-
tions designed help reduce wheel spin, coun-
teract skidding, and to generally help improve
directional stability.
CAUTION
A pulsating sound will be audible when the
system is actively operating and is normal.Traction control (TC)This function is designed to help reduce wheel
spin by transferring power from a drive wheel
that begins to lose traction to the wheel on the
opposite side of the vehicle (on the same axle).
TC is most active at low speeds.
This is one of DSTC's permanent functions and
cannot be switched off.Active Yaw Control (AYC)This function helps maintain directional stabil-
ity, for example when cornering, by braking
one or more of the wheels if the vehicle shows
a tendency to skid or slide laterally.
This is one of DSTC's permanent functions and
cannot be switched off.
Spin control (SC)The spin control function is designed to help
prevent the drive wheels from spinning while
the vehicle is accelerating.
Under certain circumstances, such as when
driving with snow chains, or driving in deep
snow or loose sand, it may be advisable to
temporarily switch off this function for maxi-
mum tractive force.
WARNING
The car's handling and stability characteris-
tics will be altered if the spin control function
has been disabled.Operation
G021409
Temporarily switching off Spin control1.
Turn the thumbwheel
until the
DSTC
menu is shown.
2.
Hold down the RESET button
to toggle
between
DSTC SPIN CONTROL ON or
OFF
.
Messages in the information displayDSTC Temporarily OFF
– system function
has been temporarily reduced due to high
brake disc temperature. The function is acti-
vated automatically when the brakes have
cooled.
DSTC Service required
– the system has
been disabled due to a fault. If this occurs:
1. Stop the vehicle in a safe place and turn off
the engine.
2. Restart the engine.
If the message remains when the engine is
restarted, drive to an authorized Volvo work-
shop to have the system inspected.
Symbols in the instrument panelIf the symbols
and
are dis-
played at the same time, read the message in
the information display.

04 Comfort and driving pleasureCollision warning with Auto-brake (option)
04164
Cause
Action
The surface of the windshield is clean but the message remains in the
display.
Wait a short time. It may take several minutes for the camera to register
visibility.
The surface between the inside of the windshield and the camera is dirty.
Contact an authorized Volvo retailer or service technician to have this
surface cleaned.
Symbols and messages in the displaySymbol
Message
Description
Collision warn.
OFF
Collision Warning is switched off. This message is displayed when the engine is started and will dis-
appear after approx. 5 seconds. It can also be erased by pressing the READ button.
Collision warn.
Unavailable
Collision Warning cannot be activated. This message is displayed when the driver attempts to activate
the function. It will disappear after approx. 5 seconds or can be erased by pressing the READ button.
Auto braking
was activated
Auto-braking has been active.
Camera blocked
See manual
The camera is temporarily not functioning. This message is displayed if the camera is obstructed by
snow, ice, dirt, etc., on the windshield. Clean the area of the windshield in front of the camera, see
page 162 for more information on the camera’s limitations.

04 Comfort and driving pleasure
Collision warning with Auto-brake (option)
04
165
Symbol
Message
Description
Radar blocked
See manual
Collision Warning and Auto-brake are temporarily not functioning. The radar sensor is blocked, for
example by heavy rain or snow that has accumulated in front of the sensor, and cannot detect other
vehicles, see page 169 for more information on the radar sensor’s limitations.
Collision warn.
Service required
Collision Warning and Auto-brake are partially or completely not functioning.
Contact a trained and qualified Volvo service technician if the message remains in the display.

04 Comfort and driving pleasureAdaptive Cruise Control–ACC (option)
04172
Symbol
Message
Description
Radar blocked
See manual
ACC has been temporarily disconnected because the radar is obstructed in some way and cannot
detect other vehicles.
see page 169 for information on the radar sensor’s limitations..
Cruise control
Service required
ACC is not functioning.
Contact a trained and qualified Volvo service technician.

04 Comfort and driving pleasure
Distance alert
04
175
Symbol
Message
Description
Radar blockd
See manual
Distance Alert has been temporarily disconnected because the radar is obstructed in some way and
cannot detect other vehicles. See page 169 for information on the radar sensor’s limitations.
Collision warn.
Service required
Distance Alert or Collision Warning with Auto-brake is not functioning properly. Contact a trained and
qualified Volvo service technician.

04 Comfort and driving pleasureDriver Alert System (option)
04178
Symbols and messages in the displaySymbol
Message
Description
Driver Alert
OFF
The function is not switched on.
Driver Alert
Unavailable
The vehicle’s speed is below 37 mph (60 km/h) or the road lacks clear marking lines.
Driver Alert
The function is analyzing the driver’s driving pattern. The number of bars varies from 1–5, where a low
number of bars indicates erratic driving. A high number of bars indicates stable driving.
Driver Alert
Time for a break
The vehicle has been driven erratically. The driver receives an audible signal and a text message.
Camera blocked
See manual
The camera is temporarily not functioning, due to snow, ice, or dirt on the windshield. Clean the area
of the windshield in front of the camera. See page 162 for information on the camera’s limitations.
Driver Alert Sys
Service required
The system is not functioning. Contact a trained and qualified Volvo service technician if the message
remains in the display.

04 Comfort and driving pleasureDriver Alert System (option)
04180
Symbols and messages in the displaySymbol
Message
Description
Lane departure
warning On/Off
The function is switched on or off. The text disappears after 5 seconds.
Lane Depart Warn
Available
The function is monitoring the road’s marker lines.
Lane Depart Warn
Unavailable
Speed is below 37 mph (60 km/h) or if the road lacks clear marker lines.
Camera blocked
See manual
The camera is temporarily not functioning, due to snow, ice, or dirt on the windshield. Clean
the area of the windshield in front of the camera. See page 162 for information on the camera’s
limitations.
Driver Alert Sys
Service required
The system is not functioning. Contact a trained and qualified Volvo service technician if the
message remains in the display.
SettingsSettings for Lane Departure Warning can be
made in the menu system under Car settings
Lane Departure Warning. See page 120
for more information on the menu system.
On at startup
: This selection puts the function
in standby mode each time the engine isstarted. Otherwise, the system will be in the
mode that it was in when the engine was
switched off.
Increased sensitivity
: This selection increa-
ses the function’s sensitivity. Warnings will be
given at an earlier stage and fewer limitations
apply.