Helpful for alleviating lower-back strain and pain when driving, power lumbar support is a set of moveable bolsters and cushions inside the seat back electronically operated by controls alongside the driver’s seat, door panel, or dash. Most commonly offered in 2-way (forward/back) and 4-way (forward/back/up/down) configurations, power lumbar support adjusts the seat cushion behind the driver to their comfort. In some cars, power lumbar support functions for the front passenger are an optional feature also. See also memory seats and power seats.
