No limp mode. My wife advised that a 1000 mile warning came on. I jumped in yesterday and the warning had turned red. Went to start it this morning and it won’t due to no fluid warning, the warning remains after putting 10 litres of fluid in

Hi, my discovery sport completely ran out of DEF and so would not restart. I have now put 10 litres of AdBlue into the tank but still not allowing the restart. Any advice? Thanks