Overview
This document contains the following information:
General
Function requirements
Function
General
Trailer maneuvering stabilization supports the driver river during reversing maneuvers with a trailer. The trailer maneuvering stabilization is operated using the multimedia system.
Function requirements
Engine running or drive train operational
Parking Assist switched on
Trailer detected
Reverse gear engaged
Incline less than 15 %
Function
The trailer maneuvering stabilization undergoes teach-in when the vehicle/trailer combination is moved forward.
During teach-in, the angle measurement is set to zero and then the trailer's drawbar length is estimated.
The articulation angle is determined by means of the turning angle sensor's rotating magnetic ring in the trailer coupling ball head.
The articulation angle of the vehicle combination (nominal lane) is entered manually by the driver manually using the multimedia system.
The trailer maneuvering stabilization controls the vehicle combination through targeted steering movements to match the nominal articulation angle entered by the driver.
Here, the speed of the vehicle combination is reduced or restricted to 7 km/h (articulation angle up to 5 degrees) or 5 km/h (articulation angle above 5 degrees).
If the driver grasps the steering wheel, the vehicle combination is brake to a standstill.
Articulation angle protection
If the articulation angle is too large the articulation angle protection is initiated. The vehicle combination is automatically braked to a standstill, when the articulation angle between the towing vehicle and the trailer is too large.
Straight towing maneuver
When the straight towing maneuver function is activated using the multimedia system, the vehicle is regulated such that the trailer's current direction is maintained. The trailer maneuvering stabilization independently calculates the articulation angle and aligns the vehicle combination to match the trailer's current direction. When reversing, the trailer swings out briefly before returning to the required line. The vehicle is aligned to be straight relative to the trailer. The trailer direction is maintained.
1 | Nominal lane determined by driver |
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Display screen
The display on the multimedia display is realized by the 360-degree camera system. The cameras record the required field of view. The driver is shown the trailer's current and nominal articulation angle. The displays support the driver when maneuvering.
Various angles of vision (e.g. top view with view of trailer or top view with image from reversing camera) are shown.
When trailer maneuvering stabilization is active, the following camera views can be selected:
Top view with image from rear camera |
1 | Wide angle view at front |
2 | Top view with image from front camera |
3 | Top view with image from side cameras in outside mirrors (entire side face of vehicle) |
4 | Wide angle view at rear |
5 | Top view with image from rear camera |
6 | Top view with view of trailer |
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Top view with image from rear camera |
7 | Touch control for articulation angle specification (active function shown in blue) |
8 | Touch control for "straight towing" maneuver |
9 | Nominal articulation angle |
10 | Lane for nominal articulation angle |
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Function schematics | |||
Function schematic for detection of transmission position | |||
Trailer maneuvering stabilization, function schematic | |||
Additional basic functions | |||
Torque coordination, basic function | |||
Steering, basic function | |||
360 degree camera picture display, basic function | All models (cars) with code 501 (360° camera) | ||
Control units | |||
Trailer recognition control unit, basic function | |||
Head unit/instrument cluster displays, basic function | |||
Instrument cluster control unit, basic function | All models (cars) with code 547 (Connect 20 Entry (NTG6)) or with code 548 (Connect 20 MID (NTG6)) or with code 549 (Connect 20 HIGH (NTG6)) | ||
Parking system control unit, basic function |