#
Press the Service button on the air sus‐
pension remote control before raising
the vehicle.
This prevents automatic readjustment
of the vehicle level and prevents it from
being raised or lowered manually.
&
WARNING Risk of accident due to low‐
ered or raised chassis
Driving with a lowered or raised chassis may
greatly impair braking and handling charac‐
teristics. You may also exceed the permissible
vehicle height when the chassis is raised.
#
Set the driving level before pulling away.
&
WARNING Risk of accident from mal‐
function of electronic level control
If electronic level control is malfunctioning,
the vehicle level may be asymmetrical, too
high or too low.
The driving and steering characteristics of the
vehicle may be noticeably different.
#
Adapt your driving style accordingly and
drive carefully.
#
Stop, paying attention to road and traf‐
fic conditions.
#
Consult a qualified specialist workshop.
*
NOTE Risk of damage to the chassis from
lowered vehicle level
If electronic level control is malfunctioning or
readjusts while you are driving, the vehicle
level may be lowered.
#
Pay attention to the road conditions and
ensure there is sufficient ground clear‐
ance.
#
Drive carefully.
The level of the vehicle depends on vehicle load
and the load distribution. Electronic level control
adjusts the level of the rear axle automatically on
vehicles with an air-sprung rear axle. The vehicle
level is thereby always maintained at the driving
level, regardless of vehicle load. Driving dynamics
remain unaffected. The height difference
between the sides of the vehicle may be up to
1 cm.
Electronic level control is not engine-dependent
and is only operational when the ignition is
switched on. The electronic level control com‐
pressor works audibly.
%
If the compressor works constantly or starts
up several times per minute, electronic level
control is malfunctioning.
Depending on the vehicle equipment, electronic
level control switches between manual and auto‐
matic mode depending on either the vehicle
speed or the position of the parking brake.
If electronic level control switches depending on
vehicle speed, manual operation is automatically
activated when the vehicle is stationary. You may
raise or lower the vehicle level. If you subse‐
quently drive faster than 10 km/h, manual mode
is automatically deactivated and automatic mode
sets the vehicle level.
If electronic level control switches depending on
the parking brake position, manual mode is auto‐
matically activated when the parking brake is
applied. You may raise or lower the vehicle level
to load and unload. If you release the parking
brake, manual mode is automatically deactivated
and automatic mode sets the driving level.
When working on the vehicle or changing a
wheel, you can deactivate electronic level control
(
/
page 137).
If electronic level control is malfunctioning or the
vehicle level is too high or too low, an audible sig‐
nal sounds.
The driving and steering characteristics of the
vehicle will be noticeably different. Electronic
level control adjusts the vehicle level to the nor‐
mal level as soon as possible. Continue driving
carefully until the audible signal stops. Only then
is the vehicle at normal level.
Automatic mode and electronic level control
automatically switch on again to restore the vehi‐
cle level, depending on the option selected:
R
when the parking brake is released
R
from speeds of approximately 10 km/h
If the electronic level control compressor threat‐
ens to overheat, e.g. due to repeated raising or
lowering within a short period, electronic level
control is deactivated. You can raise or lower the
vehicle level again after approximately
one minute.
136 Driving and parking
