Buy this and own it forever. Can use many times and help you and friend to do dianostic plus turn off check engine light. Read and clear check engine fault codes. Better than going to workshop that charge you an arm and a leg. Save lots of time going workshop. Will teach you how to use. Very easy. Idiot proof. Bring car to try to make sure work on your model. Work on many models but there are still some models do not work that you need a more expensive dianostic equipment. I sell the more expensive one too that can check airbag, ABS and auto gearbox.