• 31.10 Head unit37
• 31.15 Telephony150
• 31.16 Email/internet/computer/tablet2
• 31.20 Fleet management system/positioning5
• 31.21 Telematics service21
• 31.22 Emergency call system91
• 31.23 Emergency alarm system23
• 31.25 Radiophone/radio data transmission/fax10
• 31.27 Intercom system1
• 31.30 Instrument cluster/onboard computer126
• 31.35 Tachograph/toll system11
• 31.40 Voice control system50
• 31.45 Taxi/rental car/driving instruction vehicle25
• 31.50 Display13
• 31.55 Navigation101
• 31.60 Operation/controller/on-board computer9
• 31.65 Radio92
• 31.66 TV5
• 31.67 Media playback/data medium47
• 31.68 Rear Seat Entertainment system4
• 31.75 Audio playback/audio output37
• 31.80 Antenna/antenna amplifier82