• 31.10 Head unit36
• 31.15 Telephony31
• 31.16 Email/internet/computer/tablet2
• 31.20 Fleet management system/positioning3
• 31.21 Telematics service36
• 31.22 Emergency call system10
• 31.23 Emergency alarm system2
• 31.25 Radiophone/radio data transmission/fax3
• 31.30 Instrument cluster/onboard computer56
• 31.35 Tachograph/toll system10
• 31.40 Voice control system4
• 31.45 Taxi/rental car/driving instruction vehicle10
• 31.50 Display23
• 31.55 Navigation23
• 31.60 Operation/controller/on-board computer23
• 31.65 Radio18
• 31.66 TV10
• 31.67 Media playback/data medium26
• 31.68 Rear Seat Entertainment system4
• 31.75 Audio playback/audio output29
• 31.80 Antenna/antenna amplifier31