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Occupant Classification System (OCS) Sensor: Removal

WARNING: This page is about a different car, the 2023 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: The following procedure prescribes critical repair steps required for correct restraint system operation during a crash. Follow all notes and steps carefully. Failure to follow step instructions may result in incorrect operation of the restraint system and increases the risk of serious personal injury or death in a crash.
NOTE: To prevent system failure, carry out the OCS reset when a front passenger seat cushion assembly is removed, a new seat cushion heater mat is installed or an OCS service kit is installed. Use a diagnostic scan tool to carry out the OCS reset command.
NOTE: The OCS components (seat cushion foam and trim cover, heater mat, plastic carrier, seat cushion adjustable bolsters (if equipped) and OCS bladder with OCSM) are calibrated to each other and serviced as an assembly. The OCS service kit components are not to be installed separately. If a new OCS or OCS components are needed, a new OCS service kit must be installed. A new passenger seat cushion heater mat can be installed separately.
NOTE: Removal steps in this procedure may contain installation details.

All seats 

  1. WARNING: Before beginning any service procedure in this service information, refer to HEALTH AND SAFETY PRECAUTIONS . Failure to follow this instruction may result in serious personal injury.

    Refer to: Pyrotechnic Device Health and Safety Precautions .

  2. Raise the seat to its highest point of travel.
    GFD709447Courtesy of FORD MOTOR COMPANY
  3. If equipped with a power leg extension. Raise and extend the leg extensions.
    GFD709448Courtesy of FORD MOTOR COMPANY
  4. NOTE: Follow the unique instructions or graphic for this step in the installation.

    Remove the front passenger seat. Refer to: Front Seat .

  5. Release the front seat wiring harness and electrical connector retainers and position the front seat wiring harnesses aside.
    GFD709449Courtesy of FORD MOTOR COMPANY
  6. Detach the back panel straps from the seat track and position the back panel aside.
    GFD709450Courtesy of FORD MOTOR COMPANY
  7. If equipped with multi-contour seat. Release the coupling retainers and separate the cushion adjuster bolster hoses from the cushion SCMH.
    GFD709451Courtesy of FORD MOTOR COMPANY
  8. Detach the wiring harness retainers and disconnect the cushion heater mat electrical connector.
    GFD709452Courtesy of FORD MOTOR COMPANY
  9. Disconnect the OCS sensor, remove the OCS sensor bracket screw and route out the sensor with the bracket.

    Torque: 44 lb.in (5 Nm)

    GFD709453Courtesy of FORD MOTOR COMPANY
  10. Release the cushion cover J-clips from the leg extensions.
    GFD709454Courtesy of FORD MOTOR COMPANY

    Vehicles with multi-contour seats 

  11. If equipped. Remove the video display. Refer to: Information and Entertainment System - Component Location .
  12. NOTE: The back panel finish can be easily marred or torn, use care when working around it.

    Raise and partially separate the head restraint rear cover enough to disengage the clips from the back panel. Use the General Equipment: Interior Trim Remover

    GFD708754Courtesy of FORD MOTOR COMPANY
  13. On both sides. Grasp the back panel where it meets the module trim, pull to release the clips and separate the back panel from the module trim.
    GFD708755Courtesy of FORD MOTOR COMPANY
  14. On both sides. Using the interior trim remover, place it in between the plastic substrate and the clip, pry and detach the module clips from the back panel windows. Use the General Equipment: Interior Trim Remover
    GFD709455Courtesy of FORD MOTOR COMPANY
  15. Pull out at the bottom, release the clips and detach the back panel from the backrest frame.
    GFD708756Courtesy of FORD MOTOR COMPANY
  16. Pull out at the sides of the back panel.
    GFD708757Courtesy of FORD MOTOR COMPANY
  17. Pull down and out and remove the back panel.
    GFD708758Courtesy of FORD MOTOR COMPANY

    All seats 

  18. At the attachment points, slide the seat cushion and OCS assembly rearward and upward, detaching the carrier from the cushion module.
    GFD709456Courtesy of FORD MOTOR COMPANY
    1. NOTE: Only the carrier portion of the seat cushion and OCS assembly is shown below.

      Push the rear of the seat cushion and OCS assembly up, disengaging the carrier from the locator pins.

    2. Pull the seat cushion and OCS assembly out from between the seat track and backrest.
    GFD709457Courtesy of FORD MOTOR COMPANY
  20. Route the cushion heater mat wiring harness pigtail out from between the seat track and backrest and continue seat cushion and OCS assembly removal.
    GFD708808Courtesy of FORD MOTOR COMPANY
  21. NOTE: During installation, do not kink the OCS hose or the SRS will not operate correctly.
    NOTE: During installation, do not kink the multi-contour seat hose assembly or the multi-contour seat will not operate correctly.
    NOTE: For proper installation, note the location of the OCS hose and multi-contour seat hose assembly (if equipped) as they pass through the seat.

    Remove the seat cushion and OCS assembly.

    • Route out the OCS hose with sensor and the multi-contour seat hose assembly (if equipped).

    GFD709458Courtesy of FORD MOTOR COMPANY
  22. NOTE: This step is only necessary if installing a new OCS.
    NOTE: Follow the unique instructions or graphic for this step in the installation.

    Bend the tab away from the OCS sensor and slide the sensor off the bracket.

GFD709459Courtesy of FORD MOTOR COMPANY
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