BMW 4 Series 2023 Owner's Manual page 102

CONTROLS
Thigh support
Sport seat
Pull the lever at the front of the seat and push
the thigh support forward or back.
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 the lumbar support
▷ Press the front/rear section of the
button:
The curvature is increased/de-
creased.
▷ Press the upper/lower section of the but-
ton:
The curvature is shifted up/down.
Functional limitations
It may not be possible to adjust the lumbar
support at very high and very low tempera-
tures.
102
Seats, mirrors and steering wheel
Online Edition for Part no. 01405A7D166 - II/23
Backrest width
Principle
Adjusting the backrest width may improve side
support when cornering.
General information
The backrest width is changed by adjusting
the side sections of the backrest.
Adjusting the backrest width
▷ Press the front section of the but-
ton:
The backrest width decreases.
▷ Press the rear section of the button:
The backrest width increases.
Functional limitations
It may not be possible to adjust the backrest
width at very high and very low temperatures.
Entering the rear
Safety information
Warning
There is a danger of jamming when moving
the seats. There is a risk of injury or risk
of damage to property. Make sure that the
travel path of the seat is clear prior to any
adjustment.
Warning
Unexpected movements of the rear seat
backrest while driving may occur if the rear
seat backrest is unlocked. Vehicle control
could be lost. There is a risk of injury. Fold
back and lock the backrests before driving.
Make sure the backrest engages correctly by
slightly moving forward and back.
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