Hi guys,
My passat is being rather fruity and I cannot find anything online to indicate a common problem with passat.
So when the fuel level is at or below 1/4 the car will come up with emissions garage fault, it goes into the de-rate mode, I loose cruise control and my auto wipers.

I haven't had it scanned by vw or vdcs.

Anyone experienced this before?
As soon as I put any diesel in and it goes above 1/4 all is good with everything functioning as it should.