• 31.15 Telephony6
• 31.25 Radiophone/radio data transmission/fax1
• 31.30 Instrument cluster/onboard computer25
• 31.40 Voice control system1
• 31.50 Display1
• 31.55 Navigation17
• 31.65 Radio16
• 31.67 Media playback/data medium8
• 31.80 Antenna/antenna amplifier6