started my car, it ran ok, but nothing on dashboard was working, only radio. on 2002 Volvo V70 XC

stopped at my mechanic turn it off for one hour, when re-started it everything was working normal, except in the message window appeared "SRS airbags service urgent" What could it be?

Asked by for the 2002 Volvo V70 XC
bad connections at battery cables
Many thanks, I will try that.
1 more answer , 1 more comment
This can has a network that connects all the computers in your car. It sounds like there was an issue with the SRS module, or the network. It should be looked at by someone familiar with Volvos. For starters, I would recommend a diagnostic check of the entire computer network, and a software upgrade on the vehicle.
thank you, volvo is checking on it.