Seats: Description and Operation: Description and Operation

SEATS

Driver Seat Module
The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option.

The DSM system consists of the following components:
- Driver seat module (DSM).
- Driver memory seat switch.
- Memory mirror switch.
- Memory set switch.
- Adjustable pedal switch.
- Front vertical seat motor.
- Rear vertical seat motor.
- Horizontal seat motor.
- Power recliner seat motor (Navigator only).
- LH heated memory mirror.
- RH heated memory mirror.
- Power adjustable memory pedals.
- Remote entry key fob.

The DSM incorporates multiple functions into one module and offers diagnostics to easily locate and repair concerns affecting the subsystems that it controls.

For additional information on DSM, refer to Multifunction Electronic Control Module (General Module).

Memory Power Driver Seat Operation
The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switches or remote entry key fob. There are two memory settings possible. The outside rear view mirror positions and the power adjustable pedals are also stored and recalled with the power driver seat positions.

Programming Seat Positions
- A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within five seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
- If no memory switch input is received within the five-second time limit, the operation is aborted and the memory SET switch LED is turned off. If one of the following inputs is received during the five-secondprogramming limit, the operation is aborted and the memory SET switch LED is turned off:
- Power driver seat switch.
- Power outside rear view mirror switch
- Memory SET switch.
- Power adjustable pedal switch.

Recalling a Stored Seat Position

NOTE: A memory recall can be initiated only if the vehicle is in PARK or NEUTRAL gear 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 gearshift lever out of PARK or NEUTRAL.

Once the driver has stored the driver seat position, the driver can recall the setting by depressing the corresponding memory switch or by using a programmed remote entry transmitter.
- The driver can recall the desired driver seat position by depressing one of the memory recall switches. Depressing memory switch 1 will initiate a recall of the power driver seat position stored in memory 1. Depressing memory switch 2 will initiate a recall of the power driver seat position stored in memory 2.
- A remote transmitter can be used to recall previously set memory positions. The transmitter that has been assigned with personality 1 is capable of recalling memory position 1 only. Similarly, the personality 2 transmitter can recall only memory position 2.
- Memory recall occurs when the UNLOCK switch is depressed on the transmitter. The second depression of the UNLOCK switch, which unlocks passenger doors, does not initiate a memory recall.
- A memory recall in progress does not prohibit the initiation of another memory recall; the most recently requested memory recall will be executed.

40 Percent Chairs
The Expedition 40 percent chairs:
- are divided by a center console.
- have a standard manual lumbar adjuster on the driver seat.
- have 6-way power adjusters (standard on driver seat, optional on passenger seat).
- have optional climate controlled seating.
- have an optional memory driver seat.

The Navigator 40 percent chairs:
- are a bucket design.
- are divided by a center console.
- have standard power lumbar.
- have a standard 8-way power adjuster.
- have a standard driver memory seat.
- have optional climate controlled seating.
- With climate controlled seating, there is an air filter located in the fan motor housing under the seat. See the owner literature for additional service and scheduled maintenance interval information.

60/40 Split Bench
The 60/40 split bench seats:
- have a front seat center armrest that divides the front seat backs.
- are available with a manual passenger seat only.
- may have an optional storage bin center armrest with cupholder.

Seats - Second Row
Two different types of second row seat configurations are available:

40/20/40
The second row can have 40/20/40 seats:
- is equipped with a 40 percent E-Z entry seat that provides easy access to the third row.
- folds down for more cargo area.

40/Center Console/4O
The second row can have 40/center console/40 seats:
- is equipped with a 40 percent E-Z entry seat that provides easy access to the third row.
- the 40 percent seat will fold down for more cargo area.
- the center console has storage bin and beverage holder.

Seats - Third Row
The third row seat:
- is three-passenger seat.
- a 60/40 bench seat.
- folds down for more cargo area.
- has optional power fold down seats.

Third Row Power-Fold Seat

CAUTION:
- To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position.
- Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s).

The third row power-fold seat consists of the following electrical components:
- right third row seat relay.
- left third row seat relay.
- right power-fold seat motor.
- left power-fold seat motor.
- right front third row seat switch.
- left front third row seat switch.
- right rear third row seat switch.
- left rear third row seat switch.

For the third row power-fold seat to operate, a shared ground is supplied by the body security module (BSM) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the ignition switch is ON (or the battery saver yet tripped), and the liftgate glass or liftgate door must be open.

The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short drive cable which is connected to the drive gear assembly.