| Pos. | Spare part number | Name |
| A | - | Driver's seat lumbar support, manually adjustable |
| B | - | Driver's seat electrically adjustable lumbar support |
Depending on vehicle specification, the driver's seat may include either manually adjustable lumbar support or electrically adjustable lumbar support.
Manually adjustable lumbar support
The manual lumbar support is controlled by a control wheel located on the side of the backrest. The wheel is connected by a cable to a flexible plate located behind the backrest. When the control wheel is turned, the plate bends towards or away from the backrest. The manual adjustment system provides a high level of control over the increase in lumbar support.
Electrically adjustable lumbar support
The power lumbar support has a single motor-driven pump and air chambers. The air chambers are mounted behind the seat back. The power lumbar support motor is controlled by the power lumbar switch located on the seat frame. When the power lumbar switch is pressed, the power lumbar support motor is supplied and it operates the pump to inflate or deflate the air chambers.
Power to the lumbar support motor is supplied and controlled by the CJB via the battery demand regulator timer relay to the lumbar support control switch. The lumbar support control switch sends voltage via a hardwire connection to the lumbar support motor.
[The material was taken from the specified website: www.lrman.ru]
The lumbar support position is not stored in the seat control module.
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