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456 Display messages and warning/indicator lamps
Vehicle
Display messages
d
Vehicle is operational
Switch off ignition before
exiting
ï
Check trailer hitch lock
Possible causes/consequences and
* You are leaving the vehicle in a ready-to-drive state.
When you leave the vehicle, switch off the ignition, secure the vehicle against rolling away and take the key with
#
you.
If you do not leave the vehicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the 12 V
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battery may discharge and it will then be possible to start the vehicle only with the aid of a second battery
(starting assistance).
* The trailer hitch is not operational during a journey with a trailer.
& WARNING Risk of an accident if the ball neck is not locked
The trailer may become detached.
Stop the vehicle immediately in accordance with the traffic conditions. Do not continue driving.
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Uncouple the trailer and secure it against rolling away.
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Initiate a new swivel movement and do not re-couple the trailer until the warning/indicator lamp goes out.
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Initiate a new swivel movement (
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When the display message disappears, couple up the trailer and drive on.
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If the display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not locked.
M M
Solutions
page 237).
/
Internal use only
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