The phrase "driver lumbar" refers to a feature in a car's seat that provides extra support for the lower back of the person who is driving. Full definition
The three - zone automatic climate control means all occupants are comfortable while the power four - way driver lumbar adjust ensures the driver maintains proper posture when driving. (thenewswheel.com)
And for more indulgence, there's power fold down 3rd - row seats, dual - zone climate control and heated front seats with driver lumbar support. (autobytel.com)
The A4 gets 8 - way power adjustable front seats and only driver lumbar adjustments. (mercedeshoffman.com)