2008 VOLVO S40 sensor

seat of any vehicle with a passenger's side front airbag, and be properly restrained. Children should always be seated
in child restraints appropriate for their size and weight. See also the child safety recommendations beginning on page
30.
The Occupant Weight Sensor (OWS) is designed to meet the regulatory requirements of Federal Motor Vehicle Safety
Standard (FMVSS) 208 and is designed to disable (will not inflate) the passenger's side front airbag under certain
conditions.
The OWS works with sensors that are part of the front passenger's seat and seat belt. The sensors are designed to
detect the presence of a properly seated occupant and determine if the passenger's side front airbag should be enabled
(may inflate) or disabled (will not inflate).
The OWS will disable (will not inflate) the passenger's side front airbag when:
the front passenger's seat is unoccupied, or has small/medium objects in the front seat,
the system determines that an infant is present in a rear-facing infant seat that is installed according to the
manufacturer's instructions,
the system determines that a small child is present in a forward-facing child restraint that is installed according to
the manufacturer's instructions,
the system determines that a small child is present in a booster seat,
a front passenger takes his/her weight off of the seat for a period of time,
a child or a small person occupies the front passenger's seat.
The OWS uses a PASSENGER AIRBAG OFF indicator lamp which will illuminate and stay on to remind you that the
passenger's side front airbag is disabled. The PASSENGER AIRBAG OFF indicator lamp is located in the overhead
console, near the base of the rearview mirror.
NOTE
When the ignition is switched on, the OWS indicator light will go on for up to 10 seconds while the system performs
a self -diagnostic test.
However, if a fault is detected in the system:
The OWS indicator light will stay on
The SRS warning light (see page 17) will come on and stay on
The message PASS. AIRBAG OFF SERVICE URGENT will be displayed in the information display.
22 01 Safety
Occupant Weight Sensor (OWS)
WARNING
Never try to open, remove, or repair any components in the OWS system. This could result in system malfunction.
Maintenance or repairs should only be carried out by an a trained and qualified Volvo service technician.
If a fault in the system is detected and indicated as explained on the preceding page, be aware that the passenger's
side front airbag will not deploy in the event of a collision. In this case, the SRS system and Occupant Weight
Sensor should be inspected by a trained and qualified Volvo service technician as soon as possible.
The front passenger's seat should not be modified in any way. This could reduce pressure on the seat cushion,
which might interfere with the OWS system's function.
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The OWS is designed to disable (will not inflate) the passenger's side front airbag when a rear facing infant seat, a
forward-facing child restraint, or a booster seat is detected. The PASSENGER AIRBAG OFF indicator lamp will
illuminate and stay on to remind you that the passenger's side front airbag is disabled (see the following table).
1Volvo recommends that children always be properly restrained in appropriate child restraints in the rear seats. Do not assume that the passenger's
side front airbag is disabled unless the PASSENGER AIRBAG OFF indicator lamp is lit. Make sure the child restraint is properly installed. If there
is any doubt as to the status of the passenger's side front airbag, move the child restraint to the rear seat.
The OWS is designed to enable (may inflate) the passenger's side front airbag anytime the system senses that a person
of adult size is sitting properly in the front passenger's seat. The PASSENGER AIRBAG OFF indicator lamp will be
off and remain off.
If a person of adult size is sitting in the front passenger's seat, but the PASSENGER AIRBAG OFF indicator lamp is
on, it is possible that the person isn't sitting properly in the seat. If this happens:
Turn the vehicle off and ask the person to place the seatback in an upright position.
Have the person sit upright in the seat, centered on the seat cushion, with the person's legs comfortably extended.
Restart the vehicle and have the person remain in this position for about two minutes. This will allow the system to
detect that person and enable the passenger's frontal airbag.
If the PASSENGER AIRBAG OFF indicator lamp remains on even after this, the person should be advised to ride
in the rear seat.
This condition reflects limitations of the OWS classification capability. It does not indicate OWS malfunction.
Modifications
If you are considering modifying your vehicle in any way to accommodate a disability, for example by altering or
adapting the driver's or front passenger's seat(s) and/or airbag systems, please contact Volvo at:
In the USA
23 01 Safety
Occupant Weight Sensor (OWS)
Volvo Cars of North America, LLC
Customer Care Center
P.O. Box 914 Rockleigh, New Jersey 07647-0914
1-800-458-1552
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In Canada
Volvo Cars of Canada Corp.
National Customer Service 175 Gordon Baker Road North York, Ontario M2H 2N7
1-800-663-8255
WARNING
No objects that add to the total weight on the seat should be placed on the front passenger's seat. If a child is
seated in the front passenger's seat with any additional weight, this extra weight could cause the OWS system to
enable the airbag, which might cause it to deploy in the event of a collision, thereby injuring the child.
The seat belt should never be wrapped around an object on the front passenger's seat. This could interfere with the
OWS system's function.
The front passenger's seat belt should never be used in a way that exerts more pressure on the passenger than
normal. This could increase the pressure exerted on the weight sensor by a child, and could result in the airbag being
enabled, which might cause it to deploy in the event of a collision, thereby injuring the child.
WARNING
Keep the following points in mind with respect to the OWS system. Failure to follow these instructions could
adversely affect the system's function and result in serious injury to the occupant of the front passenger's seat:
The full weight of the front seat passenger should always be on the seat cushion. The passenger should never lift
him/herself off the seat cushion using the armrest in the door or the center console, by pressing the feet on the floor,
by sitting on the edge of the seat cushion, or by pressing against the backrest in a way that reduces pressure on the
seat cushion. This could cause OWS to disable the passenger's side front airbag.
Do not place any type of object on the front passenger's seat in such a way that jamming, pressing, or squeezing
occurs between the object and the front seat, other than as a direct result of the correct use of the Automatic Locking
Retractor/Emergency Locking Retractor (ALR/ELR) seat belt (see page 32
).
No objects should be placed under the front passenger's seat. This could interfere with the OWS system's function.
24 01 Safety
Side impact protection airbags
Side impact airbags - front seats only
As an enhancement to the structural side impact protection built into your car, the car is also equipped with Side
Impact Protection System (SIPS) airbags.
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If the vehicle has been involved in a collision, the text CRASH MODE SEE MANUAL may appear in the information
display. This indicates that the vehicle's functionality has been reduced.
NOTE
This text can only be shown if the display is undamaged and the vehicle's electrical system is intact.
CRASH MODE is a feature that is triggered if one or more of the safety systems (for example, front or side airbags,
an inflatable curtain, or one or more of the seat belt pretensioners) has deployed. The collision may have damaged an
important function in the vehicle, such as the fuel lines, sensors for one of the safety systems, the brake system, etc.
WARNING
Never attempt to repair the vehicle yourself or to reset the electrical system after the vehicle has displayed
CRASH MODE SEE MANUAL. This could result in injury or improper system function.
Restoring the vehicle to normal operating mode should only be done by a trained and qualified Volvo service
technician.
After CRASH MODE SEE MANUAL has been displayed, if you detect the odor of fuel vapor, or see any signs of
fuel leakage, do not attempt to start the vehicle. Leave the vehicle immediately.
Attempting to start the vehicle
If damage to the vehicle is minor and there is no fuel leakage, you may attempt to start the vehicle. To do so:
1. Remove the ignition key or optional keyless drive start control (see page 138
).
2. Reinsert the key or start control in the ignition switch. The vehicle will then attempt to reset CRASH MODE to
normal mode.
3. Try to start the vehicle.
Moving the vehicle
If the electrical system is able to reset system status to normal (CRASH MODE SEE MANUAL will no longer be
displayed), the vehicle may be moved carefully from its present position, if for example, it is blocking traffic. It
should, however, not be moved farther than is absolutely necessary.
WARNING
Even if the vehicle appears to be drivable after CRASH MODE has been set, it should not be driven or towed
(pulled by another vehicle). There may be concealed damage that could make it difficult or impossible to control.
The vehicle should be transported on a flatbed tow truck to a trained and qualified Volvo service technician for
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33 01 Safety
Child restraint systems
Child restraints
There are three main types of child restraint systems: infant seats, convertible seats, and booster cushions. They are
classified according to the child's age and size.
The following section provides general information on securing a child restraint using a three-point seat belt. Refer to
pages 41-42
for information on securing a child restraint using ISOFIX lower anchors and/or top tether anchorages.
WARNING
A child seat should never be used in the front passenger seat of any vehicle with a front passenger airbag - not even
if the "Passenger airbag off" symbol near the rear-view mirror is illuminated (on vehicles equipped with Occupant
Weight Sensor). If the severity of an accident were to cause the airbag to inflate, this could lead to serious injury or
death to a child seated in this position.
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NOTE
Refer to pages 41-42 for information on securing a child restraint using ISOFIX lower anchors and/or top tether
anchorages.
1. Place the infant seat in the rear seat of the vehicle.
WARNING
An infant seat must be in the rear-facing position only.
The infant seat should not be positioned behind the driver's seat unless there is adequate space for safe installation.
2. Attach the seat belt to the infant seat according to the manufacturer's instructions.
3. Fasten the seat belt by inserting the latch plate into the buckle (lock) until a distinct click is audible.
36 01 Safety
Infant seats
WARNING
A child seat should never be used in the front passenger seat of any vehicle with a front passenger airbag - not even
if the "Passenger airbag off" symbol near the rear-view mirror is illuminated (on vehicles equipped with Occupant
Weight Sensor). If the severity of an accident were to cause the airbag to inflate, this could lead to serious injury or
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The locking retractor will automatically release when the seat belt is unbuckled and allowed to retract fully.
6. Push and pull the convertible seat to ensure that it is held securely in place by the seat belt.
WARNING
It should not be possible to move the child restraint more than 1 in. (2.5 cm) in any direction.
The convertible seat can be removed by unbuckling the seat belt and letting it retract completely.
40 01 Safety
Booster cushions
Securing a booster cushion
WARNING
A child seat should never be used in the front passenger seat of any vehicle with a front passenger airbag - not even
if the "Passenger airbag off" symbol near the rear-view mirror is illuminated ( on vehicles equipped with Occupant
Weight Sensor). If the severity of an accident were to cause the airbag to inflate, this could lead to serious injury or
death to a child seated in this position.
Booster cushions are recommended for children who have outgrown convertible seats.
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2 0 0 8
VOLVO S40
44 02 Instruments and controls
Instrument overview 46
Instrument panel49
Indicator and warning symbols51
Symbols - instrument panel53
Information display56
12-volt sockets58
Lighting panel59
Left-side steering wheel lever62
Trip computer63
Cruise control65
Right-side steering wheel lever67
Rain sensor68
Steering wheel adjustment, Hazard warning flashers69
Parking brake70
Power windows71
Mirrors73
Power moonroof (option)75
Personal settings77
HomeLink® Universal Transceiver (option)80
45 02 Instruments and controls
46 02 Instruments and controls
Instrument overview
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