VP commodore Security system stoped working

[Rusty_789]

Hi guys i have a 93 vp commodore and it has a Security system on it as ya know! well today i went to a mates place turn off the car when i went back in like 1 hour i went to hit the security con and it was off i thought mmm thats funy whats going on there. well i tryed to an arm it nuffn the batt in the remote is fine so i thought i would turn it off at the left door and still nuffn
any help would be good ty