Orthopedic Seat Backrest - Mercedes-Benz 300D 2.5 1990 Owner's Manual

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Orthopedic Seat Backrest

Some models may be equipped with
orthopedic seats. These seats have
inflatable air cushions 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.
The inflation pressure of the air
cushion can be continuously varied
between position "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 re­
started.
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