2008 Volvo S40 Owner's Manual - Page 18

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.