2009 VOLVO S80 sensor

04 Comfort and driving pleasureClimate system
04124
IntroductionAir 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 (option) is located in
the interior 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.
Vents in the parcel shelf
NOTE
The air vents at the rear of the parcel shelf
should never be obstructed.Temporary shut-off of the air
conditioningThe 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-

04 Comfort and driving pleasure
Climate system
04``125
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
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 99.
The functions can also be returned to factory
settings in the menu system.
Air distribution
G021366
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.

04 Comfort and driving pleasureClimate system
04128
Auto
The function automatically
regulates cooling, heating,
blower speed, recirculation,
and air distribution to main-
tain the chosen temperature.
If you select one or more man-
ual functions, the other func-
tions continue to be controlled automatically.
The air quality sensor is engaged and all man-
ual settings are switched off when AUTO is
pressed. The display shows
AUTO
CLIMATE
.
Blower speed in automatic mode can be set
underClimate settings
Automatic blower
adjust. Choose between Low
,Normal
or
High
.NOTE
Selecting the lowest blower speed may
increases the risk of fog forming on the win-
dows.For a description of the menu system, see
page 120.
Temperature control
The temperatures on the
driver and passenger sides
can be set independently.
When the vehicle is started,
the most recent setting is
resumed.
NOTE
Heating or cooling cannot be speeded up by
selecting a higher/lower temperature than
the actual temperature required.A/C – ON/OFF
The air conditioning is con-
trolled automatically by the
system when the ON light is
on. This cools/heats and
dehumidifies the incoming air.
When the OFF light is on, the
air conditioning is always dis-
engaged. Other functions are still controlled
automatically. When defroster is selected, the
air conditioning system is set for maximum
blower speed and dehumidification.
Defroster
This function defrosts/de-ices
the windshield and front side
windows. The indicator light
in the defroster button lights
when the function is active.
•
Blower speed increases automatically and
the air conditioning will switch on (if not
already on and if the passenger compart-
ment blower is not turned off) to dehumid-
ify the air in the passenger compartment.
Air conditioning can be switched off by
pressing the AC button.
•
Recirculation will not function while defrost
is engaged.
The climate system will return to its previous
settings when the defroster function is
switched off.

04 Comfort and driving pleasure
Climate system
04``129
Recirculation/air quality system
Recirculation
This function can be used to
shut out exhaust fumes,
smoke, etc from the passen-
ger compartment. The air in
the passenger compartment
is then recirculated, i.e., no air
from outside the car is taken
into the car when this function is activated. The
indicator light in the button will illuminate when
recirculation is selected.
If the air in the car recirculates for too long,
there is a risk of condensation forming on the
insides of the windows, especially in winter.
TimerThe timer function minimizes the risk of fog-
ging, or stale air when the recirculation function
is selected by automatically switching off the
function after a certain length of time, depend-
ing on the ambient temperature. Activate/
deactivate the function under Climate control
settings
Recirculation timer. For a
description of the menu system, see
page 120.
NOTE
When Defroster is selected, recirculation is
always deactivated.Interior Air Quality System–IAQS (option)
This system consists of a mul-
tifilter and an air quality sen-
sor. The filter helps remove
gases and particles from the
incoming air, thereby reduc-
ing the amounts of odors and
contaminants entering the
vehicle. The air quality sensor detects
increased levels of contaminants in the outside
air. When the air quality sensor detects conta-
minated outside air, the air intake closes and
the air inside the passenger compartment is
recirculated, i.e., no outside air enters the vehi-
cle. The filter also cleans recirculated passen-
ger compartment air. When the AUTO button
is depressed the air quality sensor is always
engaged.
Activating the air quality sensor
Switch between the three
functions by pressing the but-
ton repeatedly.
•
The left orange light comes on – the air
quality sensor is disengaged.
•
The center green light comes on – recircu-
lation not engaged, providing it is not
required for cooling in hot weather.
•
The right orange light comes on – recircu-
lation is engaged.NOTE
•
The air quality sensor should always be
engaged in order to obtain the best air
in the passenger compartment.
•
Recirculation is limited in cold weather
to avoid fogging.
•
If the insides of the windows start fog-
ging, disengage the air quality sensor.
Use the defroster function to increase
airflow to the front, side, and rear win-
dows.

04 Comfort and driving pleasure
Collision warning with Auto-brake (option)
04``159 Introduction
Collision Warning with Auto-brake is designed
to assist the driver if there is a risk of a collision
with the vehicle ahead, if that vehicle is at a
standstill or moving in the same direction as
your vehicle. Auto-brake helps reduce the col-
lision speed.
Collision Warning consists of the following
three functions:1. Collision warningThe driver is warned of the imminent risk of a
collision.2. Brake supportThis helps the driver brake efficiently in a criti-
cal situation.3. Auto-brakeThis function brakes the vehicle automatically
if a collision cannot be avoided.
WARNING
The auto-brake function connot prevent a
collision but instead is intended to reduce
speed at the moment of impact. For full
braking effect, driver must apply the brakes.
WARNING
•
The collision warning system does not
work in all driving situations, and traffic,
weather and road conditions.
•
The collision warning system is not
designed to detect pedestrians.
•
Warnings are only provided when the
risk of collision is high. The Function
section provides information about lim-
itations that the driver must be aware of
before use.
•
Never wait for a collision warning. This
system is designed to be a supplemen-
tary driving aid. It is not, however,
intended to replace the driver's atten-
tion and judgement. The driver is
responsible for maintaining a safe dis-
tance and speed, even when the colli-
sion warning system is in use.
•
Maintenance of the collision warning
system components must only be per-
formed by a trained and qualified Volvo
technician.
Function
G017382
Function overview
Visual warning signal, collision riskRadar sensorCamera
Collision warningThe radar sensor and the camera work
together to detect stationary vehicles and vehi-
cles that are moving in the same direction as
your vehicle. If there is a risk of collision, the
driver is alerted by a flashing red warning light
and an audible warning signal. Collision warn-
ing is active at speeds above 5 mph (7 km/h).Brake supportIf the risk of collision continues to increase after
the collision warning has been given, brake

04 Comfort and driving pleasure
Collision warning with Auto-brake (option)
04``161
LimitationsStrong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the visual
warning signal in the windshield difficult to see.
For this reason, always activate the audible
warning signal in such conditions.
NOTE
The visual warning signal may be temporar-
ily disengaged in the event of high passen-
ger compartment temperature due to strong
sunlight, etc. If this occurs, the audible
warning signal will be used, even if it has
been deactivated in the menu system.Warnings may not appear if the distance to the
vehicle ahead is very small or if steering wheel
and pedal movements are great, for example,
due to a very active driving style.
WARNING
•
In certain situations, the system cannot
provide warnings or warning may be
delayed if traffic conditions or other
external factors make it impossible for
the radar sensor or camera to detect the
vehicle ahead.
•
Warnings may not be provided if the
distance to the vehicle ahead is short,
or if movements of the steering wheel/
brake pedal are great, such as during
active driving.
•
The sensor system has a limited range
for stationary or slow-moving vehicles
and may therefore give delayed or no
warnings if your vehicle’s speed is
above approximately 45 mph
(70 km/h).
•
Warnings for stationary or slow-moving
vehicles may not be provided in dark
conditions.
The Collision Warning system uses the same
radar sensors as Adaptive Cruise Control. For
more information on the radar sensor and its
limitations, see page 168.
If no warning is given, or if a warning is delayed,
Auto-brake will also not be provided or will be
delayed.
NOTE
If warnings are given too frequently, the
warning distance can be reduced (see
page 160. This causes the system to pro-
vide later warnings, which decreases the
total number of warnings provided.The camera’s limitationsThe camera is used by Collision Warning with
Auto-brake, Driver Alert Control (see
page 175), and Lane Departure Warning (see
page 177).
NOTE
•
To help protect the camera in very hot
conditions, it may be temporarily
switched off for approximately 15
minutes after the engine has been
started.
•
Keep the section of the windshield in
front of the camera clean and free of ice,
snow, or condensation.

04 Comfort and driving pleasureCollision warning with Auto-brake (option)
04162
WARNING
•
The camera has the same limitations as
the human eye. In other words, its
“vision is impaired” by adverse weather
conditions such as heavy snowfall,
dense fog, etc. These conditions may
reduce the function of systems that
depend on the camera or cause these
systems to temporarily stop function-
ing.
•
Never place any objects, decals, etc.,
on the windshield in front of the camera.
This could reduce or block the camera’s
function, and could cause one or more
of the systems that utilize the camera to
stop functioning.
•
Strong sunlight, reflections from the
road surface, ice or snow covering the
road, a dirty road surface, or unclear
lane marker lines may drastically reduce
the camera’s capacity to detect the side
of a lane or another vehicle.
Fault tracing and actionsIf the message
Windshield sensors
blocked
is displayed, this means that the cam-
era is obscured and cannot detect vehicle or
road marker lines in front of the vehicle.
This, in turn, means that Collision Warning with
Auto-brake, Lane Departure Warning, and
Driver Alert Control will not have full function-
ality.
The table lists possible causes for this mes-
sage being displayed, and suitable actions.
Cause
Action
The surface of the windshield in front of the camera is dirty or covered
with ice or snow.
Clean or clear the section of the windshield in front of the camera.
Fog, heavy rain or snow is interfering with the function of the camera.
No action possible. Heavy precipitation may affect the function of the
camera.

04 Comfort and driving pleasureCollision warning with Auto-brake (option)
04164
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 168 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.