Teardown: The BMW / Harman IDC23H Infotainment Unit (B423)
4 hours ago
- The IDC23H is one of the newest BMW infotainment units (as of Jan 2026), manufactured by Harman Becker in a joint venture with Garmin.
- The unit offers extensive connectivity including APIX to driver camera system (DCS), HUD, driver display (DFE), WiFi, Bluetooth, GNSS, Ethernet, and USB.
- Key specs: Qualcomm Snapdragon SA8155P processor, 12GB LPDDR4 RAM, 128GB UFS 3.1 storage, and an Infineon TRAVEO microcontroller.
- The interior closely resembles the previous MGU22 but adds a new APIX connectivity PCB for DCS, HUD, and DFE connections.
- The driver display (DFE) is actually the instrument cluster, indicating BMW has removed the dedicated KOMBI module, relying on the head unit for both instrument cluster and infotainment.