• 31.10 Head unit21
• 31.15 Telephony31
• 31.16 Email/internet/computer/tablet2
• 31.20 Fleet management system/positioning3
• 31.21 Telematics service33
• 31.22 Emergency call system10
• 31.30 Instrument cluster/onboard computer34
• 31.35 Tachograph/toll system9
• 31.40 Voice control system4
• 31.45 Taxi/rental car/driving instruction vehicle2
• 31.50 Display22
• 31.55 Navigation16
• 31.60 Operation/controller/on-board computer20
• 31.65 Radio15
• 31.66 TV10
• 31.67 Media playback/data medium30
• 31.68 Rear Seat Entertainment system4
• 31.75 Audio playback/audio output28
• 31.80 Antenna/antenna amplifier28