Hi folks,

I have picked up an 05 Allroad 2.5 v6 Tdi. 130k miles and no heated seats.
I got it 2 weeks ago and have since had the waterpump and cambelt done, at £454.(done by a friend who works for VW) I'm stunned in wallet department now, but very thankful to him for doing his first one, (7hrs, is that normal?)
The air suspension has worked fine, but the last two mornings the rear left corner has sunk. I've read a few posts before registering, and assume i'm heading towards the bladder having a leak.

Any guidance and info on how to find and solve this issue (inexpensively) would be greatly appreciated.

Thanks in advance.