1.The meanings of DTC is displayed in text mode 2.High pixel LCD interface 3.Works with Volkswagen and Audi (Audi/Seat/Skoda/Jetta/Golf/Beetle/Touareg/ GTI/ Passat and more) sold worldwide of 1990 or newer models 4.Re s the Oil service and Inspection lights 5.KWP 2000 protocol supported 6.Reads and erases Diagnostic Trouble Codes (DTCs) of all 78 systems of VW vehicles 7.Highly reliable and accurate 8.Easy to use with one plug-in 9.Automatic refresh s data every 15 seconds when connected to the vehicle 10.Will clear and turn off Check Engine light 11.Stand-alone unit with no need for an additional laptop computer to operate 12.Small in size and conveniently fits in your palm 13.Specially designed for DIYers and car-owners 14.Safely communicates with the on-board computer 15.No batteries needed-power provided via detachable OBD II cable