Gateway Module: Notes
A gateway module is located behind the touch screen display. The gateway module is the link component between the vehicle bus systems and the audio system MOST ring. When the vehicle is unlocked, the gateway module receives a system 'wake-up' message on the CAN bus. This message is then passed on the CAN bus from the gateway module to the integrated head unit which then 'wakes-up' the MOST ring components by energizing the infotainment relay.
The gateway module is connected by a dedicated CAN bus directly to the diagnostic socket. This allows the infotainment system to interrogated for fault codes and diagnostics using T4.