Mercedes-Benz GLC 200 4MATIC Owner's Manual page 314

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When you are reversing with a trailer, remem-
ber to use the Trailer Manoeuvering Assist
function ( page 308).
/
Extending and retracting the ball neck fully electri-
cally
& WARNING Risk of accident due to the ball
neck not being engaged
If the ball neck is not engaged, the trailer may
come loose.
Make sure that the ball neck securely
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engages and locks into place.
* NOTE Damage to the all-electric trailer
hitch due to additional pressure
The all-electric trailer hitch could be mechani-
cally damaged by applying additional pressure
when the ball neck is being extended or
retracted.
Do not make the ball neck extend/
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retract faster by applying additional pres-
sure.
* NOTE Increased risk of damage to prop-
erty due to folded-out ball neck
When the trailer is not coupled or the
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bicycle rack is attached, fold in the ball
neck or, in the case of a fully electric
trailer hitch, retract the ball neck.
* NOTE Damage to the vehicle due to incor-
rect use of the trailer hitch
When a trailer hitch is used to recover a vehi-
cle, the vehicle may be damaged in the proc-
ess.
Use the trailer hitch only for pulling a
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trailer or attaching approved carrier sys-
tems (e.g. a bicycle rack).
Requirements:
The vehicle is secured against rolling away.
R
The swivel range is clear.
R
The trailer cables or adapter plugs have been
R
removed.
Driving and parking 311
Extending the ball neck fully electrically
Pull button 2.
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1
Indicator lamp will flash and the message
Trailer coupling in motion will appear on the
driver's display.
The ball neck will extend fully electrically.