Volvo C70 Owner's Manual page 23

01 Safety
Occupant Weight Sensor
01
WARNING
• 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.
• 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 techni-
cian.
• 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.
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).
22
Passenger's OWS indica- Passenger's
seat occu- tor light sta- side front air-
pancy status tus bag status
Seat unoc- OWS indica- Passenger's
cupied tor light side front air-
bag disabled
is not
lit
Seat occu- OWS indica- Passenger's
pied by low tor light side front air-
weight occu- bag disabled
lights
1
pant/object
up
Seat occu- OWS indica- Passenger's
pied by tor light side front air-
heavy occu- bag enabled
is not
pant/object
lit
1
Volvo recommends that children always be
properly restrained in appropriate child
restraints in the rear seats.
In rare situations when the seat belt is not prop-
erly fastened, some child restraints may not be
detected by the OWS because there is very little
weight on the vehicle seat cushion. In these
cases the passenger's side front airbag may be
disabled, but the PASSENGER AIRBAG OFF
indicator lamp will not be lit. 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 prop-
erly installed (turn the vehicle off, remove the
child restraint from the vehicle and reinstall the
restraint following the child restraint manufac-
turer's instructions) and that the PASSENGER
AIRBAG OFF indicator lamp is on, or 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 AIR-
BAG 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 min-
utes. 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 per-
son should be advised to ride in the rear
seat.
This condition reflects limitations of the OWS
classification capability. It does not indicate
OWS malfunction.