There are several methods for VW reset service inspection procedure without diagnostic interface like OBDeleven, VCDS. Select right procedure for your Volkswagen car according how your vehicle is equipped.
Enter hidden menu RNS 510 & RNS 810 to view diagnostic data about your Volkswagen & Seat cars with Radio Navigation System or Skoda cars with Columbus radio. This service testmode lets you check temperature from various sensors, HDD & CAN stats, radio tuner & GPS navigation diagnostic data. This menu can be very helpful when troubleshooting electrical issues with your vehicle.