Have you removed the vents first, behind these are screws. To remove vents use a screwdriver with a cloth to protect the plastic, they just lever out.T:

 

you need to remove the movable finned part of the vents they pull out then you should be able to see the screws that hold that section in

 

This thread is really good and explains all.

http://www.vwt4forum.co.uk/showthread.php?t=88882

 

Thanks Guys,didnt know you had to remove the vents themselves i was trying to lever the whole section out yesterday,and got that sinking feeling when you know its not going to end well.T:T:

 

Just been doing exactly the same to try and get to at a supposed relay behind the hazards button. Thanks so much for this feed, very helpful!T:T:

 

The hazzard button contains the relay iirc......................

 

indeed it doesT:
removed mine n fitted the passat hazard switch,containing relayT: