• 31.10 Head unit20
• 31.15 Telephony35
• 31.16 Email/internet/computer/tablet2
• 31.20 Fleet management system/positioning3
• 31.21 Telematics service52
• 31.22 Emergency call system23
• 31.23 Emergency alarm system5
• 31.25 Radiophone/radio data transmission/fax1
• 31.30 Instrument cluster/onboard computer53
• 31.35 Tachograph/toll system9
• 31.40 Voice control system4
• 31.45 Taxi/rental car/driving instruction vehicle4
• 31.50 Display28
• 31.55 Navigation19
• 31.60 Operation/controller/on-board computer17
• 31.65 Radio22
• 31.66 TV17
• 31.67 Media playback/data medium27
• 31.68 Rear Seat Entertainment system10
• 31.75 Audio playback/audio output28
• 31.80 Antenna/antenna amplifier28