haggis_

Yeah sounds like the sensor in the tank, same thing happened to me. The fault would show on the dashboard disappear and then eventually it came back and stayed on.

If the pump has gone you'll be looking at 2k for replacing the pump and AdBlue tank as they are integrated. However it's covered if you have a warranty.

One of/all of the parts is on backorder with no ETA. So car has been off the road at Audi for 5 weeks now. Luckily we have a little run around but I was hoping to get rid or scrap it soon as its on its way out. I've been pretty patient with the dealer, not their fault and not much to be done, my only issue with them is that it's impossible to get through to the service advisor. I've literally called over 30 times to be told I'd get a call back but that never happens. Feeling annoyed, I rang today and made a fuss, which is unlike me! I finally received a call back and was informed parts are still on back order. As I've been patient they are trying to sort me out with a loaner until this is all sorted, I'd normally refuse but this time I'll take it and enjoy it.

@Zibi It is still with Audi..!

All four tyres were replaced 5000 miles ago to hankook, found out last week the rear tyres are down to 2.5mm on the inside, is this likely an alignment issue? Also considering changing tyres to michelin all seasons and wondered if anyone is running them?

Recently bought an A4 Avant Quattro, perfect service history and well looked after at 73,000 miles. 2 months in with limited miles and I get an AdBlue fault and CEL on dash. Car is now in with Audi needing the AdBlue tank replaced, thankfully the car had a few months left on approved used warranty so is covered. After researching it seems like such a common issue. Does the new part have the 2 year part warranty? Love the car but it was bought for trips down to Europe and this is not filling me with confidence.