Seats: Description and Operation
Seats
Front Seats
The front seats can be equipped with the following serviceable components:
- Adjustable head restraint and guide sleeves attached to the backrest frame
- Backrest and cushion foam pads
- Backrest and cushion covers
- Backrest frames equipped with manual and power recliners (serviced with backrest frame only) attached to the seat track
- Seat cushion frames attached to the seat tracks
- Manual adjustable lumbar assembly attached to the backrest and cushion frames
- Power adjustable lumbar assembly attached to the backrest frame
- Manual and power seat tracks located at the seat base
- Memory system components attached to the driver seat
- Climate controlled seat system components (heated/cooled seats)
- Seat side air bag attached to the seat backrest frame
- Safety belt buckle and pretensioner attached to the seat track
- Cushion side shields attached to the outboard side of the seat cushion frames
- Seat control switches attached to the cushion side shields
- Seat track position sensor attached to driver seat track (part of the Supplemental Restraint System (SRS))
Driver Seat Module (DSM) - Memory Seat
The driver power seat, power exterior mirrors, power adjustable pedals and adjustable steering column are controlled by the Driver Seat Module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located under the driver seat. To install a new DSM, refer to Driver Seat Module (DSM) Service and Repair. Programmable Module Installation (PMI) must be carried out when installing a new DSM. Refer to Module Configuration Programmable Module Installation (PMI).
This system allows automatic positioning of the driver seat, power exterior mirrors, power adjustable pedals and power tilt steering column to 2 programmable positions. The personalized memory seat positions are recalled using memory switch buttons 1 and 2 or with the remote entry transmitter. Memory positions can be stored at any time. A memory recall can be initiated only if the vehicle is in PARK or NEUTRAL and the ignition switch is not in START. A memory recall in progress will not be affected by moving the ignition switch to START or by moving the gear selector lever out of PARK or NEUTRAL. For information on programming memory positions or recalling stored memory position, refer to Memory Position Programming Programming and Relearning.
The memory seat system includes the following serviceable components:
- DSM attached to the seat track
- Memory SET switch attached to the cushion side shield
- Adjustable pedal switch
- Power mirror switch
- Adjustable steering column switch
- Memory seat track assembly (with seat position sensors integral to motors)
- Horizontal motor (part of seat track)
- Front height motor (part of seat track)
- Rear height motor (part of seat track)
- Backrest power recliner motor (with integral position sensor) (part of backrest frame)
- LH and RH memory power mirrors
- Power adjustable memory pedals
- Power adjustable steering column
- Remote entry transmitter
Easy Entry/Exit
The easy entry/exit feature is a function of the DSM and can be enabled/disabled using a scan tool. When enabled, the feature becomes a user accessible item on the message center allowing the user to turn the feature on and off. Refer to the Owner's Literature or Instrumentation, Message Center, and Warning Chimes [1][2]Description and Operation for information on the message center.
Climate Controlled Seats
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the HVAC module located on the instrument panel. Each front seat temperature is then monitored and controlled by the Dual Climate Controlled Seat Module (DCSM) located on the passenger front seat track.
The front seat cushions are equipped with a plenum (duct) attached to the cushion frame suspension wires (serviced with the cushion frame). Conditioned air from the cushion Thermo-Electric Device (TED) and blower assembly is routed through a plenum and into the manifold fitted within the cushion foam pad (serviced with the cushion foam pad). The front seat backrest TED and blower assembly operates similarly by routing conditioned air directly through the backrest manifold (serviced with the backrest foam pad).
The climate controlled seat system includes the following serviceable components:
- HVAC module located in the instrument panel
- DCSM attached to the passenger seat track
- TED and blower assemblies attached to the backrest and cushion frames of each front seat
- Air filter attached to each TED and blower assembly (See the Owner's Literature for additional service and scheduled maintenance interval information)
- Seat cushion and backrest foam pads equipped with manifolds (foam air ducts)
- Ventilated seat cushion and backrest covers
Manual Lumbar
The manual front seat backrest lumbar is adjusted by a knob mounted on the side of the seat cushion side shield. The lumbar adjuster is mounted to the seat track assembly and drives a cable connected to the lumbar assembly attached to the backrest frame.
Power Lumbar
The driver seat has an electro-mechanical backrest lumbar assembly. The lumbar switch adjustment is on the side of the seat cushion side shield and is part of the seat control switch. The lumbar motor is mounted to the lumbar assembly and is serviced only with a new lumbar assembly.
Manual Recliner
The manual recliner can be adjusted by a handle mounted on the outboard side of the cushion side shield. Manual recliners are only serviceable by installing a new backrest frame assembly.
Power Recliner
The driver seat has an electro-mechanical backrest adjuster. The backrest adjustment switch is located on the side of the seat cushion side shield and is part of the seat control switch. The recliner motor is mounted to the backrest frame. Power recliners and motors are only serviceable by installing a new backrest frame assembly.
Seat Side Air Bags
The driver and passenger seat side air bags are attached to the seat backrest frame. If a seat side air bag deployment has occurred, refer to Supplemental Restraint System Side Air Bag Module.
Safety Belt Buckle Pretensioners
The driver and passenger front seats are equipped with safety belt buckle and pretensioner assemblies attached to the seat tracks. If a deployment has occurred, refer to Supplemental Restraint System Safety Belt Buckle and Pretensioner.
Second Row Seats
The second row is equipped with outboard 40 percent seats and can also be equipped with a center console or center 20 percent seat.
40 Percent E-Z Entry Seats
The 40 percent E-Z entry seats are equipped with the following features:
- Adjustable folding head restraints
- Fold-flat backrests
- Optional heated seat system
- Kneeling seat base mechanisms for added level cargo area
- Manual recliners
- Tip-forward seat base mechanisms for easy entry to third row seating
The 40 percent E-Z entry seat is serviced as an assembly. Only the following components are serviceable:
- All trim coverings
- Adjustable head restraint and guide sleeves attached to the backrest frame
- Armrest (if equipped)
- Heated seat system components (if equipped)
- Safety belt buckle
- Seat mounting fasteners
- Seat mounting striker plates
20 Percent Seat
The second row 20 percent center seat is equipped with the following serviceable items:
- All trim covers
- Backrest and cushion foam pads
- Backrest and cushion covers
- Backrest and cushion frames
- Release handle and bezel attached to the backrest frame
- Seat track attached to the seat base
- Safety belt buckle attached to the seat track
- Safety belt retractor attached to the seat backrest frame
Heated Seats
This system allows independent seat electrical heating of the outboard 40 percent seats on demand.
The rear heated seat system includes the following serviceable components:
- Heater mats attached to the seat backrest and cushion foam pads
- Heated seat module attached under the front floor console
- Heated seat switches attached behind the floor console rear panel
- Wiring harness attached to the seat cushion frame
Third Row Seats
NOTE: The Smart Junction Box (SJB) may also be identified as the Generic Electronic Module (GEM).
The third row seats are a 60/40 percent folding split bench design with optional power-fold system option.
The third row seat includes the following serviceable items:
- All trim covers
- Backrest and cushion foam pads
- Backrest and cushion covers
- Backrest and cushion frames
- Release handle and bezel attached to the backrest frame
- Seat track attached to the seat base
- Safety belt buckles attached to the seat track
- Center safety belt retractor attached to the 60 percent seat backrest frame
Third Row Power-Fold Seat
The third row power-fold seats are activated by the rear power-fold seat switches. The power-fold seats only operate with the vehicle in PARK, and the liftgate glass, liftgate door or any entry door is open, allowing the SJB to enable power to the third row power-fold seat system.
The third row power-fold seat system includes the following serviceable components:
- SJB located behind the instrument panel
- RH and LH third row power-fold seat relays located behind the RH rear quarter trim panel
- RH and LH power-fold seat motors attached to the base of the seat
- RH and LH rear third row seat switches attached to the RH rear quarter trim panel
- RH and LH drive gear assemblies attached to the base of the seat
The third row power-fold seat motors control drive gear assemblies to raise and lower the seat backrests. The power-fold motors are serviceable separately.