i have an astra j 1.3 cdti keep getting error message service theft deterant system fault codes b2955-b3055-b3060-b3935 changed batteries in both keys and car ok yesterday but fault came back this morning
Vauxhall Astra J - immobiliser fault - elekie&a/c doctor
The key battery is only for the remote locking,it does not affect car starting.You will need somebody with the GM tester to investigate the system.Some info here;workshop-manuals.com/vauxhall/astra-j/safety_and_s.../