Hi guys, iv just bought a 2006 leon fr tfsi, my 1st ever vag group car! Need some help with a problem, the horn has been hard wired to a button on the couling and nothing works from the steering wheel! All the functions work fine from the stalks, Bluetooth, cruise control, etc, was wondering if the steering wheel control module is at fault the part numbers are 1ko953549ag, hw 634, and sw 070 will another part number fit ie 1ko953549aq? As I can't find one ending in ag? Any help would be greatly appreciated