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282 Driving and parking
E-ACTIVE BODY CONTROL
R
Vehicles without level control: the ball head height
will change depending on the vehicle's load. In
this case, use a trailer with a height-adjustable
drawbar.
Coupling up a trailer
* NOTE Damage to the starter battery due
to full discharge
Charging the trailer battery using the power
supply of the trailer can damage the starter
battery.
Do not use the vehicle's power supply to
#
charge the trailer battery.
Information about a suitable ball neck for
Mercedes-Benz vehicles can be obtained from a
qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Remove the cover cap from the ball neck
#
mount and store it in a safe place
(
page 280).
/
Position the trailer on a level surface behind
#
the vehicle and couple it up to the vehicle.
Establish the electrical connection between
#
the vehicle and the trailer.
%
Accessories can be connected to the perma-
nent power supply up to 180 W and to the
power supply that is switched on via the igni-
tion lock.
Uncoupling a trailer
& WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
inertia-activated brake, your hand may
become trapped between the vehicle and the
trailer drawbar.
Do not uncouple trailers with an engaged
#
overrun brake.
* NOTE Damage during uncoupling with an
engaged overrun brake
The vehicle may be damaged if you uncouple
with an engaged overrun brake.
Do not uncouple trailers with an engaged
#
overrun brake.
& WARNING Risk of becoming trapped when
disconnecting the trailer cable
Vehicles with level control system: The vehicle
may lower when the trailer cable is disconnec-
ted.
This could result in you or other people
becoming trapped if your or their limbs are
between the vehicle body and the tires or
underneath the vehicle.
Make sure that nobody is underneath the
#
vehicle or in the immediate vicinity of the
wheel arches when you disconnect the
trailer cable.
Disconnect the electrical connection between
#
the vehicle and the trailer.
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