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System functions
General control concept
Changes in level are effected by axle, with correction of differences in level between the left
and right-hand sides (e.g. caused by one-sided loading of the vehicle)
At vehicle speeds of 22 mph (35 km/h) or less, the accumulator is the preferred energy source.
A prerequisite for this is a pressure difference of at least 3 bar between the accumulator and
the pneumatic springs.
Level change procedure:
Lifting:
First the rear axle is lifted, then the front axle
This sequence ensures that oncoming traffic will not be dazzled during levelling operations,
even in the event of failure of the headlight range control.
Headlight range control is only employed in vehicles with Xenon headlights.
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Lifting
Lowering
Lowering:
First the front axle is lowered, then the rear
axle
