So:
The way I did mine this afternoon.....
Start the car
Make sure the lights are switched off
Press SET/ESC
You will probably have "Speed" displayed between the speedo and rev counter
Repeatedly press the button to the right of the SET/ESC with the up arrow on it.
This will change the functions to:
Hour (for the clock)
Buzz (for the internal beeper)
Unit (miles/kilometres)
Bag P for the Passenger Airbag
Press SET/ESC again
Press the button to the right of the Set/ESC (up arrow) to toggle the airbag on or off as the display.
Press SET/ESC
You will be asked to CONF (confirm)
Press the up arrow button for yes/no
Press SET/ESC
Either switch off or press the right hand stalk button
That should be it
(Another option on this menu, if you go past the BAG P is drl for Daylight Driving Lights on/off)
The button to the left of SET/ESC (with a down arrow) will move the functions backwards.
Even with the passenger airbag disabled, if you remove the seat (with it's airbag), there will still be an error on the dash as well as the one for the disabled airbag. I take my passenger seat out to allow me to get my motorbike in easier.
Mike