Passenger Airbag Disable

I have a problem with my daughter being travel sick on a fairly regular basis when in the back of my car. She's fine in the front of SWMBO's car (old corsa so no airbags and the rear seats are a bad shape so the seat doesn't fit correctly in the back anyway).

After another load this morning I rang my local dealer to enquire about getting the keyswitch retrofitted - turns out this uses a different module so is totally cost prohibitive (at circa £500 with switch, loom, light and fitting etc) so I asked about just having it disabled.

Seems they haven't got an airbag trained tech at present so I did some research about doing it via vag com with a mate and found out about the adaption codes.

Channel 1 is the passenger side and changing the value to 1 disables it, causing the dash light to come on for 4 seconds (as normal) then flash 6 times (as expected); however it then stays on permanantly. If re-enabled and cleared it's all fine again.

The codes are as below:

2 Faults Found:

00589 - Airbag Igniter 1; Passenger Side (N131)

33-00 - Resistance too Low

01280 - Airbag; Passenger Side; Disabled

35-00 - -

What I don't get is why I get the resistance too low fault (which is clearly why the light stays on) as the airbag module is still connected! (I did try fitting a 4.7Ohm resistor on the loom connector as suggested elsewhere but still got the same although if it's enabled with the resistor all is fine so I know it was making the circuit - I'd prefer to know the unit was disconnected if I do this anyway as I believe the dealer solution involves a resistor also.)

Anyone come across this and fixed it?

I accept that if I do this myself (still waiting on another dealer's cost/availability) there could be issues and also it's not recommended having them in the front but can't deal with clearing up sick every journey!