Fiat palio 1600 Wipers, aircon, electric windows, cigarette lighter, dimmed lights stopped working at the same time and the airbag light lit up. All the fuses are ok. Any ideas what could cause this.

i think I found the problem or problems.
There is a big yellow relay in the fuse box that got stuck I think. I opened it and toggled it manually now it works again but will replace it anyway.

The second issue is the alternator, only charging at 11.9 volts. Will repair that.