Re: 145 with a few problems
How do you know the airbag needs replacing? Is it just a light on? If so, go to an autoelectrician to reset it, much cheaper (~£10) than a dealer (~£60).
The bulbs can be either easy or tricky to replace, depending on how tight your inst surround trim is. Going from memory; remove the steering column surround; remove the horizontal trim piece to the right of the column; remove the allen keys in the inst surround; pull the surround towards you. Mine was very stiff, it is held in by 2 metal spring clips along the bottom edge. The inst panel is then easy to get out, and teh bulbs are easy to change but... I removed the connector to make it easier to remove the panel, if you do this you may need to have the airbag light reset. So, if you are having the light reset, wait until after you've changed the bulbs!