Connection And Communication
The hazard light button and the glove box button are directly connected to the Central Electronic Module (CEM).
The windshield defrosting button, rear window and external mirror defrosting button, "Previous" button, "Play/Pause" button and the "Next" button communicate with the Infotainment Head Unit (IHU) via LIN.
The interior temperature sensor communicates with the Climate Control Module (CCM) and the Infotainment Head Unit (IHU) via LIN.