Mercedes-Benz 350 SDL Owner's Manual page 32

Orthopedic Seat Backrest
Some models may be equipped with
orthopedic seats. These seats have
an inflatable air cushion built into the
backrest to provide additional lumbar
support. The amount of cushion
height and curvature may be adjusted
after turning the key in steering lock to
position 1 or 2.
30
The inflation pressure of the air
cushion can be varied between posi­
tion "0" = without pressure, and
position "4" = maximum pressure, by
changing the pressure regulator (1)
setting.
In addition, the cushion height may be
changed to five different settings
between position "A" = lowest setting,
and "E" = highest setting, by varying
the height regulator (2) adjustment.
If the engine is turned off, the last
cushion setting is retained in memory,
and automatically adjusts the cushion
to this setting when the engine is
restarted.
Adjusting Telescopic Steering
Column
Turn key in steering lock to position 1
or 2 (with the driver's or front passen­
ger's door open, the telescopic
steering column can be operated with
the key removed or in steering lock
position 0).
To lengthen or shorten the steering
column, actuate the switch (1).
Note:
The steering wheel position is stored
in memory with the seat and head
restraint position.