When extremely hot my mini will not start, lots of clicking from the relays in the passenger footwell. Sometimes the starter motor will turn over sometimes not. All other electrical items seem to work (radio,lights etc). Seems to work after car cools down inside, has needed to be jump started but that isn't always the fix. New battery, battery negative ground point cleaned. Unsure if the relay in the fuse panel or possible signal from the CAS.

Link to video of one of the times it failed to start

https://www.dropbox.com/s/32l7kqxmz7...rting.MOV?dl=0

Any advise appreciated