Parking Assist Control Module: Description and Operation

PDC Control Unit




The PDC Control Unit is located in the right rear corner of the luggage compartment.

Its main tasks are:

- Activation of sensors and reception of echo signals.
- Evaluation of the received echo signals.
- Activation of the function indicator (LED in the switch).
- Sending messages via K-CAN-S to ASK and the CD.
- Monitoring the inputs and outputs.
- Management of the diagnosis and test functions.

PDC uses the echo sounding principle to calculate the distances between each of the 4 sensors in the front and rear bumpers and any obstacle that might be present.

In addition, a three-way calculation can be used to calculate the effective distance to the bumper in the case of an obstacle between two sensors.

This three-way calculation is enabled by co-sensing of the neighboring sensors.

An active sensor system in the converter processes the received echo signals, performs the evaluation and communicates across a bi-directional data line with the control unit.