Mercedes-Benz EQS 2021 Operator's Manual page 405

Make sure that the ball on the ball neck is clean.
Check that it is either greased or dry (grease-
free), depending on the instructions for the trailer.
Folding the ball neck in
Pull switch 2 until the ball neck unlocks.
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The ball neck will fold up under the rear
bumper.
Indicator lamp 1 will flash.
Push the ball neck in the direction of the
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arrow until it engages audibly behind the
bumper.
Indicator lamp 1 will go out and the message
on the driver display will disappear.
Observe the information about the displays on the
driver's display:
Indicator and warning lamps (
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Display messages ( page 779)
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ohne
Coupling up/uncoupling a trailer
& WARNING Risk of injury from the vehicle
level being changed
The vehicle level may be changed unintention-
ally, e.g. by other people. You may become
trapped if you couple up or uncouple a trailer
while this is happening. In addition, other peo-
ple could become trapped if their limbs are
between the vehicle body and the tyres or
underneath the vehicle.
Observe the following when coupling up or
uncoupling a trailer:
Do not open or close the doors or tail-
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gate.
Do not lock or unlock the vehicle.
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Requirements:
The ball neck is extended and engaged in a
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securely locked position.
Vehicles with AIRMATIC: ensure the vehicle is
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at the normal level (
page 861)
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Driving and parking 403
page 366).
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