Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Hello , Eddie here and I will do my best to help. Just so I'm clear, you replaced the battery is that correct? or just charged it? and after replacing or charging, you still got the "immobiliser" message in the instrument cluster? let us know, thank you.
Alright, It's very possible that the CEM (Central Electric Module) lost key memory if it went completely dead. I have seen it before but it's not common. Have you got a spare key to try? If so, have you tried it yet and does the spare key give you the same result?