Lumbar support
The curvature of the seat backrest can be adjusted in such a way that it supports the lumbar region of the spine. The lower back and the spine are supported for upright posture.

▷ Press the front/rear section of the switch.
The curvature is increased/ decreased.
▷ Press the upper/lower section of the switch.
The curvature is shifted up/ down.
See also:
General information
Overloading the vehicle
To avoid exceeding the approved carrying
capacity of the tires, never overload the vehicle.
Overloading can lead to overheating and increases
the rate at which damage de ...
2012 BMW 3 Series Sedan: First Look
Competes with: Mercedes-Benz C-Class, Infiniti G37, Audi A4
Looks like: A little bit bigger outside, just a teensy bit bigger inside
Drivetrain: 240-hp, 2.0-liter twin-turbocharged inline-four cylin ...
Malfunction
Comfort Access may not function properly if it
experiences interference from external sources
such as mobile phones, metal objects, overhead
power lines, transmission towers, etc.
In this case, ...
