update
i did send it for a repair, in fact had to send it 3 times , every time it came back , we connected it and it still said internal module error, after 3 go's they gave me the money back(£80).
i got a new unit from the stealers for £330, had it fitted and codded toady and for the first time since i bought the car i have NO stupid AIRBAG light on, £400 lighter but happy.