Volvo S40 2005 Owner's Manual page 17

2005 Volvo S40
If the system is functioning normally, the status of the front passenger's side airbag (enabled/disabled)
will be shown by the OWS indicator light as explained in the table above.
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 and then go out.
However, if a fault is detected in the system:
The OWS indicator light will stay on
The safety system warning light (see
The message PASS. AIRBAG OFF SERVICE URGENT will be displayed in the information display.
WARNING!
If a fault in the system is detected and indicated as explained above, be aware that the passenger's side
front airbag will not deploy in the event of a collision. In this case, the safety systems and Occupant
Weight Sensor should be inspected by an authorized Volvo retailer as soon as possible.
pg. 20 Front airbags (Supplemental Restraint System - SRS)
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page 22) will come on and stay on