1996 Ford Aerostar Owner's Manual - Page 33

To ensure that the air bag system will operate as intended in a crash, the system is equipped with a diagnostic module, which controls a readiness lamp and a warning tone. The diagnostic module monitors its own circuits, the air bag electrical system, the air bag readiness light, the air bag power, and the air bag inflators. The air bag system uses a readiness light on the instrument cluster and a tone to indicate the condition of the system. When you turn the ignition key to the ON position, this light will illuminate for approximately six (6) seconds and then turn off. This indicates that the system is operating normally. NOTE: Maintenance of the air bag system is not required. A problem with the system is indicated by one or more of the following: u the readiness light will either flash or stay lit, u or it will not light immediately after ignition is turned on, u or a group of five beeps will be heard. The tone pattern will repeat periodically until the problem and light are repaired. If any of these things happen, have the air bag system serviced at your Ford or Lincoln-Mercury dealer immediately. Unless serviced, the air bag Supplemental Restraint System may not function properly in the event of a collision. RWARNING Do not attempt to service, repair, or modify the Air Bag Supplemental Restraint System or its fuses. See your Ford or Lincoln-Mercury dealer. 31