Rating: 4.7/5 Best for: BMW (E/F/G chassis), Mercedes, Mini, Rolls Royce

The screen is a small blue LCD (like a Game Boy). You navigate by clicking left/right through chassis codes. If you don't know your chassis code (E90 vs F30), you will be guessing.

While not a full diagnostic tool, it reads Battery Voltage and Brake Pad Wear sensor status (Open/Closed). This saves you from pulling wheels just to check if a sensor is broken. The Bad (The Caveats) 1. It will not diagnose If you have an "Engine Misfire" or "Transmission Fault," this tool is useless. It has no code reading function for ECU/PCM/TCM. You still need a proper scanner (ISTA, Foxwell, Launch) for that.

Unlike the cheap $15 eBay resetters, the V2 has a metal OBD head and a thick, shielded cable. The buttons have actual tactile click feedback. It feels like it will survive being dropped on a shop floor.

It resets the battery history, but unlike dealer tools, it does not allow you to change the battery type (AGM to Lead-Acid) or capacity (80Ah to 90Ah). If you change battery type , you still need ISTA. If you replace like-for-like, this works perfectly.