After battery went flat in my Vectra c 52 sri ,radio has turned into safe mode.
No big deal I’ve got instructions, code and I’ve unlocked it before.
“Ignition on... switch radio off..... press and hold AS and switch radio on... wait for beep…”
Problem is that it does not beep therefore I cannot make any further steps.
It only shows SAFE no matter what I do.
Any ideas?

thanks