V50 L5-2.4L VIN 39 B5244S7 (2005)
July 2008
Subject:
OWS system: Updated logic for "Passenger Airbag off" light
Dear Volvo Owner,
The OWS is a set of sensor(s) that is part of the front passenger's seat and seat belt monitoring system. 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).
Recently your vehicle may have received an SRS (Supplemental Restraint System) software upgrade for one of the following reasons:
^
Completion of Campaign 167A
^
SRS control unit replacement.
^
Total CAN upgrade or reload was performed
As of May 2007, SRS Software included a change in the "Passenger Airbag Off" lamp logic when the passenger front seat is unoccupied. With the
upgraded SW, the Passenger Airbag Disconnected light will illuminate and stay on to remind you that the passenger's side front airbag is disabled.
Prior to this visit this indicator lamp would illuminate for approximately 10 seconds when the ignition is turned on to confirm that it is functional, and
then go out for the remainder of that drive cycle with an unoccupied front passenger seat.
The following are conditions when the OWS will disable (will not inflate) the passenger's side front airbag:
^
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.
Volvo recommends that children always be properly restrained in appropriate child restraints in the rear seats.
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.
We have taken this action in the interest of your continued satisfaction with your Volvo. Please keep a copy of this letter with your owners manual.
Should you have any further questions please contact us at:
Volvo Cars of North America, LLC
Customer Care Center
1 Volvo Drive Rockleigh, New Jersey 07647-0914
