For Porsche, we have Piwis II and Piwis III, Piwis II is support vehicle till 2018 Year, Piwis III is support vehicle till 2021 Year, and Piwis III need choose the laptop with the tool.
For Mercedes Benz vehicle, we have C3, C4 , C5, C6. C3 is for the old car, C6 is for the new car, C4/C5 is between C3 and C6.
For John Deere truck, we have Advisor EDL V2. The 3 software is in the same version for V4.0, the 2 software is in the same version for V4.2, it is divide for 5.2 version.
Above the diagnose tools for vehicle, but a lot of the people need key programming and mileage correct. But the diagnose tool does not have those function.
1. Original Yanhua Digimaster 3 Odometer Correction Master. 2. ODO MASTER 3. Original DSP3 Each tool have they own car list, you could find your vehicle Model No. and Year in the car list, then it is mean this tool could support your vehicle.