2010 VOLVO V70/XC70 service

04 Comfort and driving pleasure
Climate system
04
124* Option/accessory, for more information, see Introduction.
Introduction
Air conditioningThe vehicle is equipped with Electronic Climate
Control (ECC). The climate control system
cools, heats or dehumidifies the air in the pas-
senger compartment.
NOTE
•The air conditioning can be switched
off, but to ensure the best possible cli-
mate comfort in the passenger com-
partment and to prevent the windows
from misting, it should always be on.
•In warm weather, a small amount of
water may accumulate under the car
when it has been parked. This water is
condensation from the A/C system and
is normal.
Sensor location
•The sunlight sensor is located on the top
side of the dashboard.
NOTE
The sunlight sensor monitors which side of
the car that is most exposed to sunlight.
This can mean that the temperature may
differ between the right and left-side air
vents, even if the temperatures set for both
sides of the passenger compartment are the
same.
•The temperature sensor for the passenger
compartment is located below the climate
control panel.
•The outside temperature sensor is located
on the door mirror.
•The humidity sensor* is located in the inte-
rior rearview mirror.
NOTE
Do not cover or block the sensors with
clothing or other objects.
Side windows and moonroofTo ensure that the air conditioning works opti-
mally, the side windows, and the optional
moonroof should be closed.
Fog on the inside of the windowsThe defroster function should be used to
remove fog or mist from the inside of the win-
dows. Keeping the windows clean with a com-mercially available window washing spray will
also help prevent fogging or misting.
Temporary shut-off of the air
conditioning
The air conditioning is momentarily disen-
gaged during full-throttle acceleration or when
driving uphill with a trailer. This may result in a
temporary increase in cabin temperature.
Ice and snowAlways keep the air intake grille at the base of
the windshield free of snow.
Climate system maintenanceSpecial tools and equipment are required to
maintain and carry out repairs on the climate
system. Work of this type should only be done
by a trained and qualified Volvo service tech-
nician.
RefrigerantVolvo cares about the environment. The air
conditioning system in your car contains a
CFC-free refrigerant – R134a. This substance
will not deplete the ozone layer. The air condi-
tioning system contains 1.8 lbs (800 g) of
R134a. The systems uses PAG oil.
Passenger compartment filterReplace the cabin air filter with a new one at
the recommended intervals. Please refer to

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 128.
•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
Open
Closed
Horizontal airflow
Vertical airflow
Direct the outer air vents toward the side win-
dows to defrost.

04 Comfort and driving pleasure
Stability system
04
154
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 display
DSTC 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 panel
If the symbols and are displayed
at the same time, read the message in the
information display.
If the symbol
appears alone, it may
appear as follows:

04 Comfort and driving pleasure
Collision warning with Auto-brake*
04

* Option/accessory, for more information, see Introduction.163
CauseAction
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 display
SymbolMessageDescription
Collision warn.
OFFCollision 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.
UnavailableCollision 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 activatedAuto-braking has been active.
Camera blocked
See manualThe 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 161 for more information on the camera’s limitations.

04 Comfort and driving pleasure
Collision warning with Auto-brake*
04
164* Option/accessory, for more information, see Introduction.
SymbolMessageDescription
Radar blocked
See manualCollision 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 168 for more information on the radar sensor’s limitations.
Collision warn.
Service requiredCollision 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 pleasure
Adaptive Cruise Control (ACC)*
04
* Option/accessory, for more information, see Introduction.171
SymbolMessageDescription
Radar blocked
See manualACC has been temporarily disconnected because the radar is obstructed in some way and cannot
detect other vehicles.
see page 168 for information on the radar sensor’s limitations..
Cruise control
Service requiredACC is not functioning.
Contact a trained and qualified Volvo service technician.

04 Comfort and driving pleasure
Distance alert
04
174
SymbolMessageDescription
Radar blocked
See manualDistance Alert has been temporarily disconnected because the radar is obstructed in some way and
cannot detect other vehicles. See page 168 for information on the radar sensor’s limitations.
Collision warn.
Service requiredDistance Alert or Collision Warning with Auto-brake is not functioning properly. Contact a trained and
qualified Volvo service technician.

04 Comfort and driving pleasure
Driver Alert System*
04

* Option/accessory, for more information, see Introduction.177 Symbols and messages in the display
SymbolMessageDescription
-Driver Alert
OFFThe function is not switched on.
-Driver Alert
UnavailableThe vehicle’s speed is below 37 mph (60 km/h) or the road lacks clear marking lines.
Driver AlertThe 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 breakThe vehicle has been driven erratically. The driver receives an audible signal and a text message.
Camera blocked
See manualThe 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 161 for information on the camera’s limitations.
Driver Alert Sys
Service requiredThe system is not functioning. Contact a trained and qualified Volvo service technician if the message
remains in the display.