me too, any progress? i am thinking on buying an idrive CIC controller and test it also.
also for CAN sniffing or sending data for tests, you can use an ELM327 based device, even a 5$ china clone, but i prefer using Obdlink Sx because of the large buffer.
after you sniff the IDs of the Idrive Controller and the idrive unit you can easily filter data based on their IDs.