It's a great tool and works for most things on most vehicles.

The only down side is the hit or miss service functions depending on tool model and vehicle model.

i.e. My Topdon Artidiag 800 upgrade lists AdBlue DEF reset for most vehicles except for my Mercedes Van. There are other Topdon DIY tools that do have this feature. It was the reason I purchased the upgrade...

Still a great tool for most newer vehicles...