Towing a trailer
within the limits imposed by the system. Do
not let the extra convenience afforded by
the trailer assist function tempt you into
taking any safety risks – this can cause acci-
dents. The trailer assist cannot replace the
full concentration of the driver.
CAUTION
– If the connector socket is not fitted correct-
ly, this could cause damage to the vehicle's
electrical system.
– Particularly in high outside temperatures, it
is not possible to drive up long steep gradi-
ents without a suitable cooling system.
there is a risk of damaging the engine.
– Unintended vehicle manoeuvres can cause
serious injuries.
– Always adjust your driving style to suit the
vision, weather, road and traffic conditions.
– The trailer assist does not take the vehicle
surroundings into account and does not de-
tect obstacles. It is the driver's responsibility
to judge whether the trailer can be man-
oeuvred safely.
Trailer assist
General information
Applies to: vehicles with trailer assist
The trailer assist helps you to reverse and park
the vehicle when a trailer is hitched up. The re-
versing camera detects the trailer angle. The sys-
tem automatically learns the properties of the
trailer while driving.
– Always watch the area surrounding the vehi-
cle. Please note that the front end of the ve-
hicle swings out further than the rear.
– Do not allow the MMI display to distract you
from watching the traffic.
The trailer assist automatically steers the trailer
in the desired direction when reversing. You oper-
ate the accelerator and brake pedal. The system
is inactive when driving forwards and you must
steer manually. When reversing, the trailer assist
limits the speed to between approx. 3 and
8 km/h, depending on the situation. The speed
cannot be increased even by pressing the acceler-
ator further.
– The steering wheel turns by itself when you
use the trailer assist. Do not reach into the
path of the steering wheel – risk of injury!
– The trailer assist only controls the steering
movements. As the driver you are always re-
sponsible for braking and for operating the
accelerator and watching the traffic.
CAUTION
Before every trip
– The trailer assist cannot plan the move-
ments necessary to manoeuvre the trailer. It
merely steers the trailer in the desired di-
rection.
– Please make sure that the electrical connector
on the trailer is plugged into the socket on the
vehicle, as the trailer assist will otherwise not
be active.
– Always watch the trailer as it is moving and
be ready to stop the manoeuvre if necessary
to avoid damage. Even if the trailer assist is
used correctly, in rare cases the trailer may
still steer at an angle which deviates from
the specified setting.
– Whenever necessary, clean the reversing cam-
era either manually, or by operating the rear
window washer ðpage 66, or by selecting the
cleaning function on the MMI ðpage 223.
Please observe the notes on cleaning and care
ðpage 347.
– Hitch up the trailer as straight as possible. If
the angle between the trailer and vehicle is
too large, there is a risk that the vehicle will
collide with the trailer.
WARNING
– Please note the safety precautions and sys-
tem limitations of the supporting systems,
sensors and cameras ðpage 171 to
ðpage 174.
– The distance from the trailer coupling to the
trailer axle must be between approximately
1 metre (min.) and 5 metres (max.). For
multi-axle trailers, this distance is meas-
ured from the centre of the axles.
– The technology in the trailer assist cannot
defy the laws of physics and works only
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