My A3 (54reg 2.0TDI) has been having a few issues starting when hot. It's fine when cold and drives normally but if i've been out in it for say 30 mins and then turn off and then restart a few mins later it just clicks. I've changed the starter motor and everything was fine for a while but now this issue has come back. Can anyone help please?? Thanks

 

have you checked your battery? mine did something similar when i needed a new battery --- especially the heat shortens the life a lot