how to remove this part 7m3 820743c (aircon)

[also]

Hi to everyone.
itÃ,´s my first post in this forum. I hope to find a good solutions to  my problem.

i need to replace the pipe 7M3 820 743C, but itÃ,´s under a plastic cover of the headlights. in the right side. And there is not space enough to remove it.

What pieces are necessary to remove previously? Is it necessary a special tool?

[Chrispb]

Hello and 

Have a read through this Link