Mercedes-Benz 500 SEC Operator's Manual page 40

Lumbar Support
1 Pressure regulator
The seats have an inflatable air
cushion built into the backrest to
provide additional lumbar support.
The inflation pressure of the air
cushion can be continuously varied
between position "0" = without
pressure, and position "5" = maximum
pressure, by changing the pressure
regulator (1) setting.
Multicontour Backrest
1 Height regulator
2 Pressure regulator
3 Side bolster adjustment
Some models may be equipped with
orthopedic seats. These seats have
inflatable air cushions built into the
backrest to provide additional lumbar
and side support.
The amount of cushion height and
curvature may be adjusted after
turning the key in steering lock to
position 2.
Bottom
Center
Top
can be selected together with
or
The inflation pressure of the air
cushion can be continuously varied
between position "0" = without
pressure, and position "5" = maximum
pressure, by changing the pressure
regulator (2) setting.
The side bolsters of the backrest can
be adjusted with push button (3):
• pushing forward -increase side
support,
• pushing backward -decrease
side support.
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.
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