23883 posts · Joined 2007. #1 · Nov 28, 2009. This is a follow up on a post at audiworld: Cliffs: the dealer forgot to top off a Q7 TDI adblue tank and the low level light came on. Dealer showed him a TSB that said only the dealer can get the adblue tank to know it has been filled up. The real problem is that if the adblue tank thinks it's
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