#
Store cover 1 so that it cannot move
around.
#
Observe the manufacturer's installation
instructions.
Observe the notes on loading the vehicle.
Coupling up/uncoupling a trailer
Requirements:
R
The vehicle is secured with the electric park‐
ing brake.
R
The transmission is in position j.
The trailer will be correctly detected by the vehi‐
cle only if the following conditions are met:
R
The trailer is connected correctly.
R
The trailer lighting system is in working
order.
The functions of the following systems are affec‐
ted by a correctly connected trailer:
R
Active Lane Keeping Assist
R
ESP
®
trailer stabilization
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist
R
Drive Away Assist
R
Cross Traffic Alert
R
Rear view camera
R
360° Camera
Vehicles without a level control system: 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 battery due to full
discharge
Charging the trailer battery using the power
supply of the trailer can damage the vehicle
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 from the ball neck mount
and store it in a safe place (/ page 209).
#
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.
Decoupling 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.
210
Driving and parking
