vectra cdr 500 cant enter code?

My battery recently died on my Zafira leading to the stereo coming on in safe mode. I have tried the 3 different numbers i received with the car (Including the one on the car pass) all to no avail. Can someone please give me some help...

Kathleen F
December 2010

I have code from my car pass, i tryed to type it and, boom, it is coded by some other code, and it shows me 9 _ _ _ _ and now 8 _ _ _ _

Goran
July 2010

I have vauxhall fronter CDR500 CD player. I know what the code is, however I cannot get to the point in which it shows CODE ---- in order to enter the code.i have " 7 SAFE ".i cant enter the code.

like
April 2010

press & hold in the AS key & switch on,
SAFE will be displayed followed by 10----
press preset 1 until first digit of code is displayed
press preset 2 until second digit
and so on until code number is displayed
then press AS key to store code

nigel
July 2009