Sure, do you followed the disconnect battery procedure before manipulating the radio? If not, you need a vida scanner to erase all the code errors.Hi!
It's a 2005 s60, I was reparing the radiocd player, a hu603.
I found out many things in the car stop working while the radio is not connected, but now I connected everything and I still get a AIRBAG SERVICE URGENT message error.
I hope it helps you