Roadi EP21 Electronic Park Brake Diagnostic Tool Reads and clears EPB or SBC trouble codes and inspects brake system for air Deactivates or activates Sensotronic Brake Control 'for some new produced cars recently, it may require to update the program for it to work perfectly'. Opens and closes the brake pads, basic setting of rear brake calipers after changing brake discs and pads Retrieves ECU information and avoids brake installation errors, muliingual menu, software upgradable via computer USB. Covers vehicles, Audi A6,Audi A8, Mercedes E Class (2002-2007), SL, CLS, and Volkswagen Passat