To retrot fit a Visteon Voiece module into a ML55 AMG, we are looking for CAN bus protocol. The Voice module can send a command to raise Window, turn radio station etc via CAN bus interface. Does any one know where we can acquire a copy of the protocol? We have tried local dealerships, Mercedes WIS support to no avail.

If someone gives you that info for FREE after spending $$$$$$$$ trying to build scan tools to retrieve that info I would be suprised. Baum tools & Assenmacher tools (www.asttool.com) sell this type of scan tools.