Audi A6 4F2005 How to replace sidelight bulb ?( or headlamp

[MasterBlaster]

Hope someone come help, trawled the 'net but not much help.
I need to replace the sidelight bulb, but manual says dealer fit only. Anybody know what needs to be done, or do I need to spend 100 quid to get the dealer to do it.
Thanks

[MasterBlaster]

Thanks for the replies , its a 2.7TDI.
This is the first car I've owned which required a dealer fit bulb change. I would have thought it should be a requirement for bulb changes to be a roadside change with a basic tool kit, but having to dismantle half the engine bay seems to be the norm these days.
Would still like to do it myself instead of paying somebody else to change a light bulb!