I have a 2003 Ford Fiesta 1.25 with 55k on the clock. The airbag icon in the dash has begun flashing 4 then 3 (or vice versa) before eventually staying on. A mechanic reset it for me and said it was the passenger seat pre-tensioner sensor, which he pointed out attached to the front underside of seat.
There doesn't seem to be one for the driver seat. Anyhow after fifteen miles the fault light returned.
I have since spoken to another mechanic who said, given the low value of the car, I could find the four wires which go to this sensor and remove them, connecting the two white together and the two coloured together, which will clear the fault.
Is any of this correct?