Mercedes-Benz E-Class Coupe 2017 Owner's Manual page 221

218 Driving and parking
Remove the protective covering from the ball
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head and store it in a safe place.
Make sure that the ball of the ball neck is clean
and that it is either greased or dry (grease free),
depending on the instructions for the trailer.
Folding the ball neck inwards
Pull release switch 2 again until the ball
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neck unlocks.
The ball neck folds up under the rear
bumper.
Indicator lamp 1 flashes.
Press the ball neck in the direction of the
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arrow until it engages audibly behind the
bumper.
Indicator lamp 1 on release switch
the message in the multifunction display go
out.
Observe any information which may be displayed
in the instrument cluster:
Warning and indicator lamps (
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Display messages ( page 354)
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Coupling up/uncoupling a trailer
& WARNING Risk of injury from the vehicle
level being changed
Vehicles with level control system: the vehi‐
cle level may be changed unintentionally, e.g.
by other persons. If this happens when you
are coupling up or uncoupling a trailer, you
could become trapped. In addition, other
people could become trapped if their limbs
are between the vehicle body and the tyres
or underneath the vehicle.
When coupling up or uncoupling a trailer,
make sure that:
The doors or tailgate are not opened or
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2 and closed.
Do not initiate the level control system
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and do not operate the DYNAMIC
SELECT switch.
The vehicle is not locked or unlocked.
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page 410)
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Requirements:
Before coupling up the trailer, the ball neck must
be fully extended and engaged in the securely
locked position.
Trailers with a 7-pin plug can be connected to
the vehicle:
adapter plug
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adapter cable
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In order for the trailer to be recognised by the
vehicle:
the electrical connection must be set up cor‐
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rectly
the trailer lighting system must be in working
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order
The operation of the following systems depends
on the trailer being connected correctly:
®
ESP
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Parking Assist PARKTRONIC
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Parking Pilot
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Blind Spot Assist or Active Blind Spot Assist
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Active Lane Keeping Assist
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