Supports the spine.

The lumbar support in the backrest of the driver’s seat enables the seat to be adjusted to suit the driver’s ergonomic comfort requirements. Both air bladders are adjusted pneumatically. The height of the bladders and the extent of the curvature can be controlled with a 4-way switch at the outside of the driver’s seat.
This optional feature is available for 3 seat variants. Seats fitted with lumbar support meet the criteria of the German AGR campaign for healthy spines.