2011 Ford Expedition Owner Guide 1st Printing - Page 177

Seating and Safety Restraints • one or more impact and safing sensors and diagnostic monitor (RCM), • a readiness light and tone • the electrical wiring which connects the components. The RCM (restraints control module) monitors its own internal circuits and the supplemental airbag electrical system wiring (including the impact sensors, the system wiring, the airbag system readiness light, the airbag backup power and the airbag ignitors). Determining if the system is operational The SRS uses a readiness light in the instrument cluster or a tone to indicate the condition of the system. Refer to the Warning lights and chimes section in the Instrument Cluster chapter. Routine maintenance of the airbag is not required. A difficulty with the system is indicated by one or more of the following: • The readiness light will either flash or stay lit. • The readiness light will not illuminate immediately after ignition is turned on. • A series of five beeps will be heard. The tone pattern will repeat periodically until the problem and/or light are repaired. If any of these things happen, even intermittently, contact your authorized dealer as soon as possible. Unless serviced, the system may not function properly in the event of a collision. Seat-mounted side airbag system WARNING: Do not place objects or mount equipment on or near the airbag cover on the side of the seatbacks of the front seats or in front seat areas that may come into contact with a deploying airbag. Failure to follow these instructions may increase the risk of personal injury in the event of a collision. WARNING: Do not use accessory seat covers. The use of accessory seat covers may prevent the deployment of the side airbags and increase the risk of injury in an accident. WARNING: Do not lean your head on the door. The side airbag could injure you as it deploys from the side of the seatback. 177 2011 Expedition (exd) Owners Guide, 1st Printing USA (fus)