Trailer Maneuvering Stabilization, Basic Function - GF54.65-S-1008A

Model All (Light transporter) 

Overview 

This document contains the following information:

• General 
• Function requirements 
• Function 

General 

Trailer maneuvering stabilization supports the driver during reversing maneuvers with a trailer. The trailer maneuvering stabilization is operated using the multimedia system.

Function requirements 

• Engine running or drivetrain operational.
• Parking Assist switched on
• Trailer detected
• Reverse gear engaged
• Incline less than 15%

Function 

Trailer maneuvering stabilization is taught-in through brief forward travel of the vehicle combination (vehicle and trailer) and, while doing so, the angle measurement is reset to zero.

The drawbar length of the trailer is then calculated when cornering.

Determining articulation angle 

Depending on the model series and model year, the actual articulation angle is determined by either:

• A rotating magnetic ring of the turning angle sensor in the ball head of the trailer coupling, or
• visual recognition by the reversing camera

The setpoint articulation angle of the vehicle combination (setpoint lane) is entered by the driver manually using the multimedia system.

Trailer maneuvering stabilization controls the vehicle combination through targeted steering movements to match the setpoint articulation angle specified 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 braked to a standstill.

Articulation angle protection 

If the articulation angle is too large, articulation angle protection is initiated. The vehicle combination is automatically braked to a standstill if 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.

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 setpoint articulation angle. The displays support the driver when maneuvering.

Various viewing angles (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 perspectives can be selected:

	Function schematics
	Trailer maneuvering stabilization, function schematic	Model 447 with code XM7 (MOPF II) with code 553 (Trailer Maneuvering Assist)	PE54.65-S-2507-97A
	Additional basic functions
	Torque coordination, basic function		GF07.10-S-1060A
	Steering, basic function		GF46.35-S-9900A
	360 degree camera picture display, basic function	Model all (Light transporter) with code EZ6 (Parking package with 360-degree camera)	GF54.65-S-1004A
	Control units
	Trailer recognition control unit, basic function		GF31.19-S-9890A
	Head unit/instrument cluster displays, basic function		GF54.30-S-2005A
	Instrument cluster control unit, basic function		GF54.30-S-9891A
	Parking system control unit, basic function	Model all (Light transporter) with code EZ5 (Active Parking Assist with reversing camera) Model all (Light transporter) with code EZ6 (Parking package with 360-degree camera) Model all (Light transporter) with code EZ7 (Active Parking Assist) Model all (Light transporter) with code JB6 (Parking package with 360-degree camera) Model all (Light transporter) with code JB7 (Parking Package with reversing camera)	GF54.65-S-9890A
	Head unit control unit, basic function		GF82.85-S-9891A