7!20 Loading up
Trailer hitch*
Electrical connection
If your trailer has a 7!pin plug, you can
establish the electrical connection with
an adapter lead. The adapter lead is
available at a smart center.
As soon as you connect up a trailer to the
car's electrical system, the appropriate
indicator light in the instrument cluster
will come on when you make a turn.
Accident risk!
The ball head is only securely
fitted if the green mark on the hand!
wheel is aligned with the green mark on
the ball head and the key can be re!
moved. A ball head that is not securely
fitted could work loose and allow the
trailer to become detached, potential!
ly causing an accident.
While a trailer is being towed, the ball
head must be closed and the key re!
moved. Only then is it assured that the
ball head is locked and unable to work
loose during a journey.
If the ball head cannot be locked and
the key cannot be removed, take off the
ball head and clean it (see also page 7!
18). If it is still not possible to lock the
ball head after cleaning, have the entire
trailer hitch checked by a qualified spe!
cialist workshop, such as a smart cent!
er.
In this case, do not use the trailer
hitch for towing a trailer, as its safe
functioning cannot be assured.
Danger of injury!
Never leave the ball head lying
loose inside the car. It could otherwise
be thrown around in the event of sharp
braking, an abrupt change of direction
or an accident and cause serious or
even fatal injuries to occupants.
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