Front seats with electrical adjustment (Discovery 3)

Item name	Spare part catalog number	Description
1	-	Longitudinal position adjustment (move forward/backward)
2	-	Backrest tilt adjustment
3	-	Seat cushion height adjustment

Longitudinal position adjustment (move forward/backward)

Press the switch forward or backward and hold it until the seat moves to the desired position.

Backrest tilt adjustment

Turn the switch forward or backward and hold it until the seatback is at the desired angle.

Seat cushion height adjustment

To adjust the height of the seat cushion, press the switch up or down.

Front seat adjustment drives

NOTE: On 2008 and later model year vehicles, the passenger seat may also be equipped with an 8-way power seat adjustment.

The front seats are adjusted using permanent magnet electric motors coupled to rack and pinion mechanisms. If the mechanism jams, an internal thermal relay stops the voltage supply to the motor. Each seat adjustment switch has two pin contacts. Both contacts are normally grounded. When the switch is pressed, voltage is supplied to one of the contacts, while the other remains grounded. Pressing the switch in the opposite direction swaps the voltage and "ground", as a result of which the direction of rotation of the electric motor is reversed.

Adjusting the lumbar support

Vehicles from 2008 model year onwards

Beginning with the 2008 model year, the front power seats feature power-adjustable lumbar support. The lumbar support pump inflates a chamber in the seatback, providing additional passenger comfort.

Location of the lumbar support adjustment switch

The adjustment is made by means of a rocker switch located on the outside of the seat, at the top of the side trim of the seat cushion. The switch is connected to an air pump, which fills the lumbar support chamber with air to provide the necessary adjustment. The air pump operates as long as the switch is in the inflation position. When the switch is moved to the release position, it actuates the air release solenoid valve, which allows air to leave the chamber. The lumbar support chamber is protected from over-inflation by a pressure relief valve.