2008 VOLVO S40 sensor

NOTE
The sunlight sensor monitors the side of the vehicle from which the sun shines into the passenger compartment. This
means that the temperature may differ slightly between the left and right air vents, even if the climate system
temperature is set to be the same for both sides of the passenger compartment.
Side windows and optional moonroof
The electronic climate control system will function best if the windows and moonroof are closed. If you drive with the
windows or moonroof open, it may be preferable to manually adjust the temperature and blower control (the LED in
the AUTO switch should be off).
Acceleration
The air conditioning system is temporarily switched off during full throttle acceleration.
88 03 Climate
Air vents
Air vents in the dashboard
A. Open
B. Closed
C. Horizontal air flow
D. Vertical air flow
Direct the outer air vents toward the side windows to defrost.
89 03 Climate
Manual climate control
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The alarm system
The alarm is automatically armed whenever the car is locked with the remote control, or if a front lock button is
depressed.
When armed, the alarm continuously monitors a number of points on the car. The following conditions will trigger the
alarm:
The hood is forced open.
The trunk is forced open.
A door is forced open.
The ignition switch is tampered with
An attempt is made to start the car with a non-approved key (a key not coded to the car's ignition).
If there is movement in the passenger compartment (if the car is equipped with the optional movement sensor).
The car is lifted or towed (if the car is equipped with the optional inclination sensor)
The battery is disconnected (while the alarm is armed).
The siren is disconnected when the alarm is disarmed.
The alarm indicator light
The status of the alarm system is indicated by the indicator light on at the top of the dashboard (see illustration):
Indicator light off - the alarm is not armed
The indicator light flashes every two seconds - the alarm is armed
The indicator light flashes rapidly before the ignition is switched on - the alarm has been triggered. The message
"ALARM TRIGGERED, CHECK CAR" will also be displayed.
Fault in the alarm system: If a fault has been detected in the alarm system, a message will be shown in the
information display. Contact a trained and qualified Volvo service technician to have the alarm system inspected and
repaired if necessary.
Arming the alarm
Press the LOCK button on the remote control, or press the central lock button on one of the front doors with the door
open. One long flash of the turn signals will confirm that the alarm is armed.
Disarming the alarm
Press the UNLOCK button on the remote control or insert the key in the ignition
1 to disarm the alarm. Two short
flashes from the car's direction indicators confirm that the alarm has been deactivated and that all doors are unlocked.
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Turning off (stopping) the alarm
If the alarm is sounding, it can be stopped by pressing the UNLOCK button on the remote control or by inserting the
key in the ignition
1On vehicles with the optional keyless drive, press in the start control in the ignition switch.
125 05 Locks and alarm
Alarm
switch. The driver's door must first be unlocked with the key blade.
NOTE
On vehicles equipped with the optional keyless drive, the start control must be removed from the ignition switch
before the key can be inserted. See page 138
for instructions.
Audible/visual alarm signal
An audible alarm signal is given by a battery powered siren. The alarm cycle lasts for 30 seconds.
NOTE
The visual alarm signal is given by flashing all turn signals and turning on the interior lighting for approximately 5
minutes.
Temporarily turning off the accessory alarm sensor(s)
In certain situations it may be desirable to turn off the accessory inclination and movement alarm sensors if, for
example, you drive your vehicle onto a ferry where the rocking of the boat could trigger the alarm or if a pet is left in
the vehicle with the doors locked.
1. From position II or higher, turn the ignition key to 0 and remove it from the ignition switch
1
2. Press the button (1). The LED in the button will remain on for one minute after the key has been removed from the
ignition switch or until the car is locked.
1
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The optional keyless drive start control does not need to be removed.
CAUTION
The accessory sensors are automatically reconnected to the alarm system the next time the vehicle is unlocked and
then locked again.
This function will not turn off the vehicle's standard alarm
U.S.A. FCC ID: MAYDA 5823(3)
This device complies with part 15 of the FCC rules. Operation is subject to the following conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Canada IC: 4405A-DA 5823(3)
Movement sensor DA5823 by Dynex Operation is subject to the following conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference that may cause undesired
operation of the device.

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(91 or higher) or to change gasoline brands to fully utilize your engine's capacity, and for the smoothest possible
operation.
NOTE
When switching to higher octane fuel or changing gasoline brands, it may be necessary to fill the tank more than
once before a difference in engine operation is noticeable.
Deposit control gasoline (detergent additives)
Volvo recommends the use of detergent gasoline to control engine deposits. Detergent gasoline is effective in keeping
injectors and intake valves clean. Consistent use of deposit control gasolines will help ensure good driveability and
fuel economy. If you are not sure whether the gasoline contains deposit control additives, check with the service
station operator.
NOTE
Volvo does not recommend the use of store -bought fuel injector cleaning additives.
Unleaded fuel
Each Volvo has a three-way catalytic converter and must use only unleaded gasoline. U.S. and Canadian regulations
require that pumps delivering unleaded gasoline be labelled "UNLEADED". Only these pumps have nozzles which fit
your vehicle's filler inlet. It is unlawful to dispense leaded fuel into a vehicle labelled "unleaded gasoline only".
Leaded gasoline damages the three-way catalytic converter and the heated oxygen sensor system. Repeated use of
leaded gasoline will lessen the effectiveness of the
133 06 Starting and driving
Fuel requirements
emission control system and could result in loss of emission warranty coverage. State and local vehicle inspection
programs will make detection of misfueling easier, possibly resulting in emission test failure for misfueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain an octane enhancing additive called methyl-cyclopentadienyl manganese
tricarbonyl (MMT). If such fuels are used, your Emission Control System performance may be affected, and the
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162 06 Starting and driving
Park assist (option/accessory)
Introduction
The park assist system is designed to assist you when driving into parking spaces, garages, etc. It utilizes four
ultrasound sensors located in one or both bumpers to measure the distance to a vehicle, object, or a person who may
be close to the front or rear of your vehicle.
Park assist is available in two versions:
Rear bumper only
Front and rear bumpers
WARNING
Park Assist is an information system, NOT a safety system. This system is designed to be a supplementary aid when
parking the vehicle. It is not, however, intended to replace the driver's attention and judgement.
Function
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The system is activated automatically when the vehicle is started. The indicator light in the button in the center console
illuminates.
The front park assist system is active from the time the engine is started until the vehicle exceeds a speed of
approximately 10 mph (15 km/h). It is also active when the vehicle is backing up.
Rear park assist is active when the engine is running and reverse gear has been selected.
Rear park assist
The distance monitored behind the vehicle is approximately 5 ft (1.5 m). The signal comes from the rear speakers.
The system must be deactivated when towing a trailer, carrying bicycles in a rear-mounted carrier, etc, which could
trigger the rear park assist system's sensors.
NOTE
Rear park assist is deactivated automatically when towing a trailer if Volvo genuine trailer wiring is used.
Front park assist
The distance monitored in front of the vehicle is approximately 2.5 ft (0.8 m). The audible signal comes from the audio
system's front speakers.
It may not be possible to combine auxiliary headlights and front park assist since these lights could trigger the system's
sensors.
163 06 Starting and driving
Park assist (option/accessory)
Activating/deactivating park assist
The system is activated automatically when the vehicle is started.
If the vehicle is equipped with both front and rear park assist , press the park assist button on the center console
(see the illustration) to temporarily turn off (deactivate) the systems. The indicator light in the button will go out when
the system has been switched off.
If the vehicle is equipped with rear park assist only , a message will be displayed when reverse gear is selected
showing if the system is on or off. Press EXIT to turn rear park assist off, or ENTER to turn the system on.
Park assist will be automatically reactivated the next time the engine is started, or if the button is pressed (the
indicator light in the button will illuminate).
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NOTE
Front park assist is disengaged automatically when the parking brake is applied.
If the vehicle is equipped with front and rear park assist, both systems will be deactivated by pressing the button.
Audible signals from the park assist system
The Park Assist system uses an intermittent tone that pulses faster as you come close to an object, and becomes
constant when you are within approximately 1 ft (30 cm) of an object in front of or behind the vehicle. If the volume
of another source from the audio system is high, this will be automatically lowered.
If there are objects within this distance both behind and in front of the vehicle, the signal alternates between front and
rear speakers.
Faults in the system
If the information symbol illuminates and PARK ASSIST SERVICE REQUIRED is shown on the information
display, this indicates that the system is not functioning properly and has been disengaged. Consult a trained and
qualified Volvo service technician.
CAUTION
In certain circumstances, the park assist system may give unexpected warning signals that can be caused by external
sound sources that use the same ultrasound frequencies as the system. This may include such things as the horns of
other vehicles, wet tires on asphalt, pneumatic brakes, motorcycle exhaust pipes, etc. This does not indicate a fault in
the system.
164 06 Starting and driving
Park assist (option/accessory)
Cleaning the sensors
The sensors must be cleaned regularly to ensure that they work properly. Clean them with water and a suitable car
washing detergent.
NOTE
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