2008 VOLVO S80 sensor

temperature.
The rear window is demisted/de-iced automatically if the vehicle is started in an outside temperature lower than + 7°C.
Defrosting can be selected under Climate settings
Auto. rear defroster. Select between On or Off.
Interior rearview mirror
Auto-dim function
An integrated sensor reacts to headlights from following traffic and automatically reduces glare in the mirror.
101 03 Your driving environment
Power moonroof
Power moonroof
The moonroof controls are located in the ceiling console near the rearview mirror. The moonroof can be opened
vertically and horizontally. The vehicle's must be in ignition mode I or II for the moonroof to be operated.
Sliding moonroof
Opening, automatic
Opening, manual
Closing, manual
Closing, automatic
Automatic opening
Pull the switch as far back as possible (to the position for automatic opening) and release it to automatically fully slide
open the moonroof.
Manual opening
Pull the switch back to the first stop (the position for manual opening)and hold it until the moonroof has opened to the
position of your choice.
Manual closing
Push the switch forward to the first stop (the position for manual closing) and hold it until the moonroof has closed to
the position of your choice, or has closed completely.

126 04 Comfort and driving pleasure
Climate system
Introduction
Air conditioning
The vehicle is equipped with Electronic Climate Control (ECC). The climate control system cools, heats or
dehumidifies the air in the passenger compartment.
NOTE
The air conditioning can be switched off, but to ensure the best possible climate comfort in the passenger
compartment 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 moonroof
To ensure that the air conditioning works optimally, the side windows, and the optional moonroof should be closed.
Fog on the inside of the windows
The defroster function should be used to remove fog or mist from the inside of the windows. Keeping the windows
clean with a commercially 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 conditioning
The air conditioning is momentarily disengaged during full-throttle acceleration or when driving uphill with a trailer.
This may result in a temporary increase in cabin temperature.
Ice and snow
Always keep the air intake grille at the base of the windshield free of snow.
Climate system maintenance
Special 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 technician.
Refrigerant
Volvo cares about the environment. The air conditioning system in your car contains a CFC-free refrigerant - R134a.
This substance
127 04 Comfort and driving pleasure
Climate system
will not deplete the ozone layer. The air conditioning system contains 1.8 lbs (800 g) of R134a. The systems uses PAG
oil.
Passenger compartment filter
Replace the cabin air filter with a new one at the recommended intervals. Please refer to your Warranty and Service
Records Information 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 vehicle. 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 recirculated, i.e. no outside air enters the vehicle. The filter also cleans recirculated passenger
compartment air.
NOTE
Contact your Volvo retailer for IAQS air filter replacement intervals.
Menu settings
The default settings for three of the climate system's functions can be changed in the menu system, see page 123
:
Blower speed in automatic mode, see page 130.
Recirculation timer for passenger compartment air, see page 130.
Automatic rear window defrosting, see page 100.
The functions can also be returned to factory settings in the menu system.
128 04 Comfort and driving pleasure
Climate system
Air distribution
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 133
.
Air vents in the dashboard

The function automatically regulates cooling, heating, blower speed, recirculation, and air distribution to maintain the
chosen temperature. If you select one or more manual functions, the other functions continue to be controlled
automatically. The air quality sensor is engaged and all manual settings are switched off when AUTO is pressed. The
display shows AUTO CLIMATE.
Blower speed in automatic mode can be set under Climate 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 windows.
For a description of the menu system, see page 123
.
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 controlled 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 disengaged. Other functions
are still controlled automatically. When defroster is selected, the air conditioning system is set for maximum blower
speed and dehumidification.
131 04 Comfort and driving pleasure
Climate system
Defroster
This function defrosts/deices 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
compartment blower is not turned off) to dehumidify 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.

Recirculation/air quality system
Recirculation
This function can be used to shut out exhaust fumes, smoke, etc from the passenger 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.
Timer
The timer function minimizes the risk of fogging, or stale air when the recirculation function is selected by
automatically switching off the function after a certain length of time, depending on the ambient temperature.
Activate/deactivate the function under Climate control settings
Recirculation timer .
For a description of the menu system, see page 123
.
NOTE
When Defroster is selected, recirculation is always deactivated.
Interior Air Quality System -IAQS (option)
This system consists of a multifilter and an air quality sensor. The filter helps remove gases and particles from the
incoming air, thereby reducing 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 contaminated outside
air, the air intake closes and the air inside the passenger compartment is recirculated, i.e., no outside air enters the
vehicle. The filter also cleans recirculated passenger 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 button repeatedly.
The left orange light comes on - the air quality sensor is disengaged.
The center green light comes on - recirculation not engaged, providing it is not required for cooling in hot weather.
The right orange light comes on - recirculation is engaged.
132 04 Comfort and driving pleasure
Climate system
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 fogging, disengage the air quality sensor. Use the defroster function to increase
airflow to the front, side, and rear windows.

maintain set speed on steep downgrades.
156 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
Introduction
Adaptive Cruise Control (ACC) is an optional system designed to assist the driver by maintaining a set speed or a set
distance to the vehicle ahead. It is primarily intended for use on long straight roads in steady traffic, such as on
highways and other main roads.
WARNING
Do not use the adaptive cruise control system in demanding driving conditions such as city traffic, winding roads,
at intersections, on slippery surfaces, in poor visibility, heavy rain, etc.
Maintenance of cruise control components must only be performed by an authorized Volvo workshop.
WARNING
Adaptive cruise control cannot cover all driving situations and traffic, weather and road conditions. The Function
section provides information about limitations that the driver must be aware of before using the adaptive cruise
control.
This system is designed to be a supplementary driving aid. It is not, however, intended to replace the driver's
attention and judgement. The driver is responsible for maintaining a safe distance and speed and must intervene if
adaptive cruise control does not maintain a suitable speed or suitable distance.
Function
Warning light, braking by driver required
Controls
Radar sensor in front grille
Adaptive cruise control consists of:
A cruise control system to maintain a set speed
A system to maintain a set distance to the vehicle ahead (expressed as a time interval. For example, you can choose
to remain approximately 2 seconds behind the vehicle ahead).

157 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
WARNING
Adaptive cruise control is not a collision avoidance system. The driver is always responsible for applying the
brakes if the system does not detect another vehicle.
Adaptive cruise control does not react to slow moving or stationary vehicles.
The distance to the vehicle ahead (in the same lane) is measured by a radar sensor. Your vehicle's speed is regulated by
acceleration and braking. The brakes may emit a sound when they are being modulated by the adaptive cruise control
system. This is normal.
WARNING
The brake pedal moves when the adaptive cruise control system modulates the brakes. Do not rest your foot under
the brake pedal.
The adaptive cruise control system is designed to follow the vehicle ahead of you in the same lane, at a set time
interval.
If the radar sensor has not detected a vehicle ahead, the system will then attempt to maintain the set speed. This is also
the case if the speed of the vehicle ahead exceeds the speed that you have set.
The adaptive cruise control system is designed to smoothly regulate speed. However, the driver must apply the brakes
in situations that require immediate braking. This applies when there are great differences in speed between vehicles,
or if the vehicle ahead brakes suddenly.
WARNING
Due to limitations in the radar sensor, braking may occur unexpectedly or not at all, see page 160
.
Adaptive cruise control can only be activated at speeds above 20 mph (30 km/h). If speed falls below 20 mph (30
km/h) or if engine speed (rpm) becomes too low, adaptive cruise control disengages and will no longer modulate the
brakes. In situations when adaptive cruise control cannot be activated Cruise Control Unavailable is shown in the
display, see page 166
.
WARNING
When adaptive cruise control disengages, the brakes will not be modulated automatically. The driver must assume
full control over the vehicle.
Warning light -driver braking required
Adaptive cruise control has a braking capacity that is equivalent to approximately 30% of the vehicle's total braking
capacity. In situations requiring more brake force than ACC can provide, if the driver does not apply the brakes, an
audible signal will sound and a red warning light will illuminate in the windshield to alert the driver to react.
NOTE