Looking at the reviews I've just wasted my money,, Software version out the box is out of date for the car it was bought for,, updated and still rubbish, returns policy states no returns if unit has been activated and updated, very clever Chinese marketing... The video shows just one of the faulty modules in this unit, it's supposed to be performing a battery reset but brining up injector cleaning on cylinder 1... Avoid if I were you, wish I had seen these reviews before buying..