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Attaching the ball neck
Secure the vehicle against rolling away.
#
Remove cover cap
1
from the ball neck
#
mount in the direction of the arrow.
Store cover cap
1
such that it cannot move
#
around.
Comply with the installation instructions of the
#
ball neck manufacturer.
Observe the notes on loading the vehicle.
Coupling up/uncoupling a trailer
The trailer will be correctly detected by the vehi-
cle only if the following conditions are met:
The trailer is connected correctly.
R
The trailer lighting system is in working order.
R
A correctly connected trailer influences, among
other things, the functions of the following sys-
tems:
®
ESP
trailer stabilization
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist
R
Drive Away Assist
R
Cross Traffic Alert
R
Reversing camera
R
Surround view camera
R
Vehicles without level control system: the ball
head height will change depending on the vehi-
cle's load. In this case, use a trailer with a height-
adjustable drawbar.
Driving and parking 199
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.
Secure the vehicle against rolling away.
#
Remove the cover cap from the ball neck
#
mount and store it in a safe place
(
page 198).
/
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.
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