• Running gear
• Body
• Vehicle electrics
• Electrical system
• Self diagnosis, V.A.G Inspection Service
• Starter-current supply-CC
• Instruments, GCI
• Infotainment
• Radio systems
• Aerial system
• Suppression measures
• Loudspeaker system
• Windscreen wipe/wash system
• Lights, lamps, switches outside
• Lights, lamps, switches inside, anti-theft system
• Wiring
• Power transmission
• Power unit
• Heating, ventilation, air conditioning system