We build driving simulators that integrate full vehicle cockpits via sensors, DAQs and forcefeedback motors to our simulation software.
We have 2012 Range Rover Evoque cockpits with the above setup that work fully. This means that the speedometer would display the correct speed, the instrument cluster displays if the high beams are on, or if the driver is indicating and so on. Previously we had access to the CAN and LIN messages from the manufacturer that allowed us to programme this interaction on the High Speed, Medium Speed CAN Bus and the LIN Bus.
We then received 2014 models where the HS CAN and MS CAN no longer work. There is absolutely no communication. The LIN Bus works just the same. Also, from the wiring diagrams we have learnt that there are 2 new twisted HS and MS CAN bus pairs. We have identified which are most relevant to our system (i.e. the ones that go to the instrument cluster and shifter). But the comms is now more complicated as there is a gateway module involved that previously was not there. It is also more complicated identifying the placement of termination resisters.
Please see attachment for more details.