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Removal and Installation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Do not install a new heater mat on a front passenger seat cushion; it is not serviceable separately. If a new cushion heater mat is needed on the front passenger seat, an Occupant Classification Sensor (OCS) system service kit equipped with a heater mat must be installed. Failure to follow this instruction may result in incorrect operation of the OCS  system. Refer to OCCUPANT CLASSIFICATION SENSOR -- SERVICE KIT for the OCS  removal and installation procedure.

All seats 

  1. Remove the front seat. For additional information, refer to SEAT - FRONT .
  2. Remove the front seat cushion. For additional information, refer to SEAT CUSHION - FRONT .
    3. NOTE: Use care when separating the seat cushion trim cover from the hook-and-loop strips or the hook-and-loop strips may be torn from the seat cushion foam pad.
  3. Release the J-clips and remove the cushion trim cover.
    • Separate the hook-and-loop strips.
    • If equipped, note heater mat wire harness routing for correct installation.
    4. NOTE: Inspect the seat cushion pad and seat cushion trim cover for any foreign objects, before installing the seat cushion trim cover to the seat cushion pad. If any foreign objects are found, remove them. Failure to follow these instructions may result in incorrect operation of the Occupant Classification Sensor (OCS) system and may cause system failure.
  4. To install, reverse the removal procedure.
  5. Install the front seat. If a passenger seat has been serviced, do not prove out the Supplemental Restraint System (SRS) at this time.  For additional information, refer to SEAT - FRONT .

    Passenger seat 

    6. WARNING: Make sure the front passenger seat repair is complete, the seat and all attached components (head restraint, seat side shield, etc.) are correctly assembled, and the seat is correctly installed to the vehicle before carrying out the System Reset. Failure to follow these instructions may result in incorrect operation of the occupant classification sensor (OCS) system and increases the risk of serious personal injury or death in a crash.
    WARNING: Install a new occupant classification sensor (OCS) system service kit as a complete assembly. Never install only part of the kit components. Failure to follow this instruction may result in incorrect operation of the OCS  system and increases the risk of serious personal injury or death in a crash.
    NOTE: To prevent system failure, the following precautions must be taken before carrying out the Occupant Classification Sensor (OCS) system reset:
    • Make sure the voltage to the Occupant Classification System Module (OCSM) is above 8 volts and less than 18 volts.
    • Make sure the OCS  system is not at a temperature below 6°C (42°F) or above 36°C (97°F) when initiating the OCS  system reset process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 6°C to 36°C (42°F to 97°F) for a minimum of 30 minutes.
    • Make sure nothing is present on the passenger seat before carrying out the OCS  system reset and nothing is placed on the seat during the process.
    • Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before carrying out the OCS  system reset process.
  6. Carry out the Occupant Classification Sensor (OCS) system reset.
  7. If the first system reset attempt was unsuccessful, carry out a thorough visual inspection of the following and repair any concerns found.
    • OCS  system connector and wiring for damage
    • Pressure sensor hose for kinks and/or damage
    • Seat-related wiring harness and body wiring harness terminals and connectors for damage
    8. NOTE: The ignition switch must be cycled after the OCS  system reset.
  8. Carry out a second OCS  system reset. If the second attempt is unsuccessful, install a new OCS  system service kit. For additional information, refer to Occupant Classification System Service Kit in OCCUPANT CLASSIFICATION SENSOR -- SERVICE KIT .
  9. Prove out the SRS  as follows:

    Turn the ignition key from ON to OFF. Wait 10 seconds, then turn the key back to ON and visually monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn off. If an air bag SRS  fault is detected, the air bag warning indicator will:

    • fail to light.
    • remain lit continuously.
    • flash.

    The flashing might not occur until approximately 30 seconds after the ignition switch has been turned from the OFF to the ON position. This is the time required for the Restraints Control Module (RCM) to complete the testing of the SRS  . If the air bag warning indicator is inoperative and a SRS  fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS  fault discovered must be diagnosed and repaired.

    Clear all continuous DTCs from the RCM  and Occupant Classification System Module (OCSM) using a scan tool.

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