Vertical dynamics management (VDM): Notes

The following functions can be installed in the vertical dynamics management control unit (VDM) as optional equipment:

Vertical Dynamics Management
active roll stabilization (marketing designation: Dynamic Drive)

This document describes the vertical dynamics management.

The VDM control unit is activated via terminal 15N by the CAS control unit. At the same time, the VDM control unit is supplied with terminal 30.

Fig 1: Identifying Vertical Dynamics Management Components

Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	Vertical Dynamics Management control unit
2	Shock absorber with damper satellite, rear right
3	Rear right ride height sensor
4	Shock absorber with damper satellite, rear left
5	Rear left ride height sensor
6	ICM control unit
7	Front left ride height sensor
8	Shock absorber with damper satellite, front left
9	Front right ride height sensor
10	Shock absorber with damper satellite, front right
11	Central gateway module (ZGM)

EDC means: Electronic Damper Control

Vertical dynamics management offers the following advantages:

greater on-road comfort
greater vehicle agility
Improved independent steering performance and response to changing loads

Vertical Dynamics Management (VDM) is an enhancement. VDM is composed of a central control unit and 4 intelligent damper satellites that are firmly connected to the shock absorbers. These 5 control units are networked via FlexRay . A new feature is that separate EDC valves are now installed for jounce and rebound. This means that the control operation no longer has to be clocked so quickly.

The following functionalities can be integrated in the Vertical Dynamics Management control unit (VDM):

Vertical Dynamics Management (activation of damper satellites, e.g. F01)
active roll stabilization (marketing designation: Dynamic Drive, e.g. F15)

NOTE: On the F15 only the Dynamic Drive is activated via the VDM control unit. The shock absorbers are controlled directly by the EDC control unit.

This document describes the Dynamic Drive.

The VDM control unit is supplied via terminal 15N (Logic). At the same time, the VDM control unit is supplied with terminal 30 (load).

NOTE: The installation location of the VDM control unit depends on the series! Note the hotspot for the installation location in the diagnosis wiring diagram!

Fig 1: Identifying Dynamic Drive Control Unit And Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Example F01

Item	Explanation
1	A-pillar trim
2	Dynamic Drive control unit
3	Dynamic Drive connector

Dynamic Drive prevents or reduces the vehicles tendency to roll while cornering at high speed or during high-speed evasive maneuvers. Vibration comfort is increased. The turn-in ability of the vehicle is optimized.