I have a 2003 s60 which is showing a message "SRS airbag service urgent"

The error code is 00d4 -srs lamp faulty signal.

I was reading other past posts on the forum and it looks like it is the dim module but when you turn on the ignition the airbag/srs icon lights up.

We tried resetting code and it will not reset.

Any help appreciated, since I am trying not to take it into volvo.

thanks