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Trailer manoeuvring assistant (Trailer Assist)
Introduction
The trailer manoeuvring assistant (below only system) helps the driver when
reversing with a trailer.
When manoeuvring, the system only undertakes the steering movement. The
driver operates the brake, accelerator or clutch pedal and the shift / selector
lever.
The state in which the steering wheel is operated by the system, is referred to
as parking operation.
WARNING
The general information relating to the use of assistance systems must be
■
observed
» page 218,
in section Introduction.
The system is not oriented to the area around the vehicle, there is no ob-
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stacle detection.
During manoeuvring, always observe the movement of the trailer and if
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neccesary cancel the manoeuvring autonomously to prevent accidents or
damage to the vehicle and the trailer.
During the parking process, the system automatically performs rapid
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steering movements. While it is doing so, do not place your hands between
the steering wheel – risk of injury!
During parking manoeuvres on loose or slippery surfaces (gravel, snow,
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ice, etc.) it is possible to stray from the calculated road. Therefore, use the
system with extreme caution in such situations.
CAUTION
The trailer position is evaluated by the rear camera based on the bending an-
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gle of the drawbar and the steering movement carried out by the system. For
this reason, the drawbar must not be obstructed by external influences.
The rear camera lens must not be contaminated, otherwise the system may
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be unavailable or the system function my be significantly impaired.
Note
We recommend performing the parking at a safe speed of up to about 5
■
km/h.
The parking process can be terminated at any time by pressing the button
■
» Fig. 296
on page 241 or by a steering intervention.
The correct system function can only be ensured if a one- or two-axle trailer
■
is hitched without steered axle.
Operating principle
Read and observe
and
The trailer position is detected by the system based on the information of the
rear camera. Trailer is steered in the direction set by the driver using steering
wheel movements.
Conditions for the system function
The engine is running.
The system is activated.
The parking aid is activated.
The driver's door and the boot lid are fully closed.
The trailer is plugged into the trailer socket.
The trailer is not veering too much.
Determining the drawbar length
The system must know the drawbar length in order that the driver is offered
the maximum possible setting angle with respect to the target position of the
trailer.
The system needs some turning manoeuvres or cornering with a hitched trailer
in order to determine the drawbar length.
Fig. 296
System button
on page 241 first.
Assist systems
241
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