Seats: Description and Operation

SEATS

The seats consist of the following components:
- front seat backrests
- front seat cushions
- heated front seats (if equipped)
- heated seat switch (if equipped)
- inboard seat cushion side shields
- headrest guide posts
- manual lumbar (driver only) (Mariner only)
- manual seat tracks
- Occupant Classification Sensor (OCS) (front passenger seat only)
- outboard seat cushion side shields
- power seat track (driver only) (if equipped)
- rear seat backrest latches
- rear seat headrests
- safety belt pretensioners
- seat control switch (if equipped)
- side air bags
- 40% rear seat
- 60% rear seat

The seat options consist of:
- bucket (leather, driver power, dual map pockets w/side air bags)
- bucket (cloth, dual map pockets, driver height adjuster w/side air bags)
- 60/40 rear seat (high series cloth, seat back dump latch)
- 60/40 rear seat (leather, seat back dump latch)
- leather heated seat (front seats only)

Front Seat Track Motor and Transmission Assembly

NOTE: If a seat track motor is inoperative or the front seat track motor and transmission assembly is identified as the source of a noise, install a new front seat track motor and transmission assembly.

The front seat track motor and transmission assembly (driver 54617D67, passenger 54617D66) on this vehicle is serviceable. To install a new front seat track motor and transmission assembly, partial disassembly of the seat track is required.

Heated Seats
This system allows the electrical heating of the front seats on demand.

The components of the system are:
- the seat heating grids located in the seat cushion and backrest.
- the heated seat module located on the seat cushion pan.
- the heated seat control switch, located on the outboard seat cushion side shield.
- temperature sensors located in the seat cushion heating grids.

Side Air Bags
The driver and passenger side air bags are attached to the seat backrest frame.

Front seat backrest trim covers installed on seats with side air bags can not be repaired. The front seat backrest trim covers are to be installed new. Cleaning of the trim covers is permissible.

If a side air bag deployment has taken place, install a new seat backrest cushion, trim cover and side air bag module. Install a new seat backrest frame if necessary.

Occupant Classification Sensor (OCS)

CAUTION:
- It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, or an OCS service kit is installed. A diagnostic tool is used to trigger the active command to carry out rezeroing of the OCS system.
- Make sure the seat is completely assembled before rezeroing.
- The following precautions must be taken before rezeroing the OCS system:
- Make sure the OCS system components are connected and no faults are present.
- Make sure the OCS system is not at a temperature below 0°C (32°F) or above 45°C (113°F) when initiating the rezeroing 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 of 0°C to 45°C (32°F to 113°F), for a minimum of 30 minutes.
- Make sure nothing is present on the passenger seat before and during the rezeroing.
- Make sure a minimum 8 second time period has passed after cycling the key to the ON position before starting the rezeroing process.

NOTE:
- For the best results in rezeroing, the OCS system should be at or near room temperature, 10°C to 29°C (50°F to 85°F).
- When using a Vehicle Communication Module (VCM), you must use the appropriate memory card with the latest update to carry out this function. To rezero the OCS system:
- select SERVICE BAY FUNCTIONS
- select RCM
- select SYSTEM RESET
- select the vehicle from the menu
- view the on-screen information, then press TRIGGER

The VCM screen will then display OCS RESET: REZERO. Press DONE (button 8) to rezero the OCS system. The VCM will return to the vehicle menu once rezeroing of the OCS system is complete.

- To rezero the OCS system using the Worldwide Diagnostic System (WDS
- select the Toolbox icon
- select Body from the menu
- select Restraints from the menu
- select Seat Weight Sensor ReZero

After selecting Seat Weight Sensor ReZero, follow the on-screen prompts to carry out rezeroing of the OCS system.

- If the first attempt to zero the OCS system is unsuccessful, a second attempt must be made.

The OCS system is found only on the front passenger seat. The OCS system components (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) are calibrated to each other and are only repaired as an assembly. OCS system components are not to be installed separately. If installing a new OCS system, OCS system component or seat cushion foam pad, a new OCS system service kit (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) must be installed as an assembly.