BMW X4 Owner's Manual page 114

CONTROLS
Lumbar support
Principle
The curvature of the seat backrest can be ad‐
justed in a way that it supports the lumbar region
of the spine. The lower back and the spine are
supported for upright sitting position.
Adjusting
▷ Press the front/rear section of
the button:
The curvature is increased/
decreased.
▷ Press the upper/lower section
of the button:
The curvature is shifted up/
down.
Functional limitations
It may not be possible to adjust the lumbar sup‐
port at very high and very low temperatures.
Backrest width
Principle
Adjusting the backrest width may improve lateral
support when taking corners.
General information
The backrest width is changed by adjusting the
side sections of the backrest.
Adjusting
▷ Press the front section of the
button:
The backrest width de‐
creases.
▷ Press the rear section of the
button:
The backrest width increases.
114
Seats, mirrors and steering wheel
Online Edition for Part no. 01405A37CC6 - VI/21
Functional limitations
It may not be possible to adjust the backrest
width at very high and very low temperatures.
Safety belts
General information
The vehicle is fitted with five safety belts to en‐
sure occupant safety. However, they can only
unfold their protective effect when adjusted cor‐
rectly.
Always make sure that safety belts are being
worn by the occupants before driving off. The
airbags supplement the safety belts as an addi‐
tional safety device. The airbags do not replace
safety belts.
All belt fastening points are designed to achieve
the best possible protective effect of the safety
belts with proper use of the safety belts and cor‐
rect seat setting. Notes on sitting safely, refer to
page 112.
The two outer safety belt buckles of the rear
seats are intended for the persons sitting on the
left and right.
The center safety belt buckle of the rear seats is
intended for the person sitting in the middle.
Safety information
Warning
Use of a safety belt to buckle more than one
person will potentially defeat the ability of the
safety belt to serve its protective function.
There is a risk of injury or danger to life. Do not
allow more than one person to wear a single
safety belt. Infants and children are not allowed
on an occupant's lap, but must be transported
and secured in designated child restraint sys‐
tems.