2006 Ford Expedition Owner Guide 2nd Printing (Spanish) - Page 578

Seating and Safety Restraints common, moderate-severity impacts. A higher energy level is used for the most severe impacts. Refer to Airbag supplemental restraints section in this chapter. Front crash severity sensor The front crash severity sensor enhances the ability to detect the severity of an impact. Positioned up front, it provides valuable information early in the crash event on the severity of the impact. This allows your Personal Safety System௢ to distinguish between different levels of crash severity and modify the deployment strategy of the dual-stage airbags and safety belt pretensioners. Driver's seat position sensor The driver's seat position sensor allows your Personal Safety System௢ to tailor the deployment level of the driver dual-stage airbag based on seat position. The system is designed to help protect smaller drivers sitting close to the driver airbag by providing a lower airbag output level. Front safety belt usage sensors The front safety belt usage sensors detect whether or not the driver and front outboard passenger safety belts are fastened. This information allows your Personal Safety System௢ to tailor the airbag deployment and safety belt pretensioner activation depending upon safety belt usage. Refer to Safety restraints section in this chapter. Front safety belt pretensioners The safety belt pretensioners at the front outboard seating positions are designed to tighten the safety belts firmly against the occupant's body during frontal collisions, and in side collisions and rollovers when the vehicle is equipped with the Safety Canopy௢ system. This maximizes the effectiveness of the safety belts. In frontal collisions, the safety belt pretensioners can be activated alone or, if the collision is of sufficient severity, together with the front airbags. Front safety belt energy management retractors The front outboard safety belt energy management retractors allow webbing to be pulled out of the retractor in a gradual and controlled manner in response to the occupant's forward momentum. This helps reduce the risk of force-related injuries to the occupant's chest by limiting the load on the occupant. Refer to Safety restraints section in this chapter. Determining if the Personal Safety Systemி is operational The Personal Safety System௢ uses a warning light in the instrument cluster or a back-up tone to indicate the condition of the system. Refer 170 2006 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)