Occupant Classification System (OCS) Sensor: Removal

WARNING: This page is about a different car, the 2018 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 trim cover is installed or an OCS service kit is installed. Use a diagnostic scan tool to carry out the OCS reset command.

NOTE: The cushion heater mat on a front outboard passenger seat is not serviced separately. If a new cushion heater mat is needed on the front passenger seat, install an OCS service kit equipped with a heater mat. Failure to follow this instruction may result in incorrect operation of the OCS.

NOTE: The OCS components (seat cushion foam and trim cover, heater mat, plastic carrier, 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 cover can be installed separately.

NOTE: Removal steps in this procedure may contain installation details.

All seats

WARNING: Before beginning any service procedure in this article, refer to health and safety warnings in General Information. Failure to follow this instruction may result in serious personal injury.

Refer to: Pyrotechnic Device Health and Safety Precautions .
Raise the seat to its highest point of travel.

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If equipped with a power leg extension.Raise and extend the leg extensions.

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NOTE: Follow the unique instructions or graphic for this step in the installation.

Remove the front passenger seat. Refer to: Front Seat .
Detach the back panel straps from the seat track.

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Detach the wiring harness retainers and disconnect the cushion heater mat electrical connector.

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Disconnect the OCS sensor, remove the OCS sensor bracket screw and route out the sensor with the bracket.
Torque: 44 lb.in (5 Nm)

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Release the cushion cover J-clips from the leg extensions.

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Vehicles with multi-contour seats
If equipped.Remove the video display. Refer to: Video Display .
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

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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.

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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

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Pull out at the bottom, release the clips and detach the back panel from the backrest frame.

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Pull out at the sides of the back panel.

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Pull down and out and remove the back panel.

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NOTE: After disconnecting the hose and lock assemblies, verify the black O-ring and white spacer remains with each hose.

NOTE: When connecting the hose and lock assemblies, an audible click must be heard for correct installation.

Detach the multi-contour seat cushion hose retainers, release the locking tab, disconnect the hose coupling from the SCMH and route the hose assembly out from the backrest.

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All seats
At the attachment points, slide the seat cushion and OCS assembly rearward and upward, detaching the carrier from the cushion module.

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1. NOTE: Only the carrier portion of the seat cushion and OCS assembly is shown.
  
  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.
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Route the cushion heater mat wiring harness pigtail out from between the seat track and backrest and continue seat cushion and OCS assembly removal.

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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.
1. Lift the seat cushion and OCS assembly off the seat track.
2. NOTE: During installation, do not kink the OCS hose or the SRS will not operate correctly.
  
  Route out the OCS hose with sensor.
3. NOTE: During installation, do not kink the multi-contour seat hose assembly or the multi-contour seat will not operate correctly.
  
  If equipped with multi-contour seat.Route out the multi-contour seat hose assembly.
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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.

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