I had the same problem last year. The site listed below will explain in detail how to change the light. It also has photos so it is pretty simple. Took me about 15 mins. Remember not to touch the halogen headlilght with your fingers. Use gloves. http://www.mohea.com/mike/words/000735.html
how to change a headlight on a 2003 passat
How do I change headlamp on 2006 Lincoln Town Car
i have a volkswagen passat 2006 the mirror indicators gone how can i change it please?
http://www.tobio.info/passat/howtos/passat_air_filter.html
You can't change it. The daytime changes automatically.
very carefully !! Read your owners manual and do it very carefully -those bulbs are VERY very cheap if broken !!
how do I remove a tire from a VW 2003 Passat
http://www.tobio.info/passat/howtos/passat_air_filter.html
Remove the wiring harness from the back of your 1999 Chevy Astro headlamp. Remove the headlamp retaining bolts. The headlamp will come out. Reverse the process to install the new headlamp.
There is a white plastic box located under the passenger side headlamp (useful !!). The fuse can be found there. You will need to remove the front grill and the headlamp has three bolts securing it and not 2 as I found out the hard way. The first 2 are located in clear view on top of the headlamp. The third is hidden underneath. I did not work out how to get to it as I didn't know it was there and broke the bracket wiggling the headlamp. Hope this helps.
http://www.tobio.info/passat/howtos/passat_air_filter.html
With the hood open remove the (2) two headlamp assembly bolts from the upper fascia support. Slide the headlamp assembly outward enough to release the headlamp bracket tabs from the slots in the upper fascia support. (to release the tabs from the slots on the passenger side lens move the assembly to the left when facing the engine, and when doing the drivers side lens shift the assembly to the right ) Position the headlamp assembly away from the vehicle body to access the electrical connector. Disconnect the electrical connector from the headlamp assembly. Remove the headlamp assembly from the vehicle. If you wish to change the halogen bulb: Disconnect the electrical connector from the headlamp bulb/socket. Remove the headlamp bulb/socket retainer ring from the headlamp, by turning counterclockwise. Remove the headlamp bulb/socket from the headlamp assembly. . "G" These instructions are similar from around '96 to '03 grand prix model years all trim levels.