Vehicle Dynamics Module (VDM)

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

The VDM monitors all sensor input and all HS-CAN messages relating to the vehicle dynamic suspension and then directly controls the valve solenoids in the shocks. The VDM sends an individual electrical current to each valve solenoid to control the amount of damping required.

When a new VDM is installed, it must be programmed with the correct vehicle information for proper dynamic suspension system operation. New module programming is carried out using a diagnostic scan tool, follow all diagnostic scan tool instructions. For additional information on module programming, refer to Module Configuration .

When one of the following components is installed new, disassembled, disconnected or removed, the VDM must be calibrated.

Front lower control arm
Front shock
Front upper control arm
Rear lower control arm
Rear shock
Suspension height sensor
VDM

The calibration procedure is required for the system to learn the zero-position of the vehicle which means the vehicle must be on a level surface, must not be moving and cannot contain any passengers or cargo. The calibration procedure is carried out using a diagnostic scan tool. The calibration routine should not be performed with the vehicle raised off the ground or immediately after lowering the vehicle as the suspension will not be in a neutral position. The suspension must be neutralized before performing the calibration routine by driving the vehicle for a short distance, such as around a parking lot.