2000 Vauxhall Agila air bag light staying on

do not remove the plug at all which ever idoit told you this wants a clip round the ear as its dangerous as if you do unplug it then the air bag wont work properly if you have a accident have it checked out by the dealer and reset by the dealer shouldnt take to long for them to sort out for you but do not unplug it at all

under the seats there are the SRS plugs. these are usually yellow or orange. with the ignition off, unplug them, cut the plugs off and solder the wires back together. do this on both sides. the reason for this is that dirt,fluff and general crud works its way into these connections causing an rise in resistance. SRS systems do not like this, and it recognizes this as an airbag fault. bu chopping out the connections this cant happen. genuine fix. but before doing this, first check out the stored ECU codes. cause it could possibly be a bag or squibb fault!! hope this helps!!!