Vent below rear light unit

[Brian Critchley]

Hi,

I have a 2010 audi a6 s line saloon. Trying to identify why moisture is getting into area where the rear jack sits. Below the light cluster unit looks to be like a vent....with really thin flaps that if you touch open.....what is that for? What's its purpose?

 

[AlS3BE]

Have you got pictures?
Only flaps I’ve seen in other cars is to released pressure when you close doors or boot to make it more comfortable for people and less pressure on the windows etc. Can’t remember what they are called. Normally near the bumper corner areas in the car.

 

[Brian Critchley]

No pictures, will take one tomorrow in daylight and when it stops raining and post, and see if that helps out.Thanks for swift reply