Mercedes-Benz S-Class Owner's Manual page 591

Display messages Possible causes/consequences and
ï
* You have attempted to displace the ball neck and the transmission is in position k, i or h.
Operation only possible in
transmission position P
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* The corresponding rear seat backrest is not engaged.
The trailer tow hitch is not operational when the vehicle is at a standstill.
Uncouple the coupled trailer and secure it against rolling away.
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Initiate a new swivelling procedure (
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If the ball neck is retracted: press and hold the button on the boot lid until the ball neck engages vertically in
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the locked position and then engages beneath the bumper.
If the ball neck is extended: press and hold the button on the boot lid until the ball neck engages beneath the
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bumper.
If the display message does not disappear, the trailer tow hitch is defective and the ball coupling is not locked.
Do not couple up the trailer. Drive on without the trailer. Note the reduced ground clearance due to the
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unlocked ball neck.
Consult a qualified specialist workshop.
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Depress the brake pedal.
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Shift the transmission to position j.
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Fold the corresponding seat backrest back until it engages.
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Display messages and warning/indicator lamps 589
M M Solutions
page 292).
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