A4 - B6 - Electrical issues

[Schmall fella]

Hey All, new to this so hope I get it right. I have a 01 B6 (8E) A4 and I'm having a few technical issues. It came with Sat Nav and even though I have bought a new disc it's coming up on the display with 'check dvd'. Any ideas anyone? Also, my front passenger door won't lock when the rest of the car does, it's the only door that when opened doesn't turn the interior light, foot well light or the lights on the door. In fact the only electrical things that works on the door is the window and mirror. Any clues anyone??

[kite]

Check for broken wires in the door loom, it runs through the rubber sleeve near the door hinge.

[bez101]

prob the pick up laser on the nav unless the disc is fu++ed

[Schmall fella]

Thanks Kite, I'll check on the wiring and see if thats the issue. As for the Nav Bez if it is the laser it looks like I'll have to replace it. Thanks for the help lads.