Got the code but ran out of tries to enter it correctly ?

I had to charge the battery on my Automatic Renault Megane Scenic and radio code was lost. I was not sure how to enter the code as the handbook does not show how to do this (I do have my code number) and think I have made too many attempts to input the numbers. I now know how to imput but am locked out.
If I disconnect battery again, will it let me re-try?
any help would be much appreciated.
Thankyou