Mercedes-Benz EQS 2021 Operator's Manual page 40

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Pull switch 2 until the ball neck unlocks.
#
The ball neck will fold out from under the rear
bumper.
Indicator lamp 1 will flash.
Pull the ball neck in the direction of the arrow
#
until it engages audibly in a vertical position.
Indicator lamp 1 on the ball neck release
switch will go out.
If the ball neck is not securely locked in place,
the message Check trailer hitch lock
appear on the driver display.
Remove the cover cap from the ball head and
#
store it in a safe place.
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.
ohne
Folding the ball neck in
will
Pull switch 2 until the ball neck unlocks.
#
The ball neck will fold up under the rear
bumper.
Indicator lamp 1 will flash.