Well half tank is apparently the new empty

[DougLoBue]

On my car. I literally have a cluster In pieces on my desk that I was repairing. The old empty was the 1/8th of a tank marker.

[PLAYED TT]

Well do whatever you did to it but 1/8th of a tank in the opposite direction from the starting point

[regal7point5]

Mine has done the same thing...171K on mine. Not sure it there is a way to recalibrate it or whether the fault lies in the float in the tank. It has been getting progressively worse to...to the point that it showed over 1/2 tank and I actually ran out of fuel. I went 490 miles on that tank I later discovered though...haha.

[DeckManDubs]

On my car. I literally have a cluster In pieces on my desk that I was repairing. The old empty was the 1/8th of a tank marker.

Sounds like the windings might have started to fail. Mine @ 1/8 is empty. Thus new cluster waiting for my free time. I presume if you were to redo the windings, then fill the tank and place the gage @ full, it would be pretty close.

[AudiMick]

Check the gauge against the "miles to empty" in the central display if they agree it's the sender(s) if not use VAG.com to check the gauge.

2 senders in a quattro.


Dirty senders is pretty common, you can clean them with a pink eraser and contact cleaner . Replace the tank seals otherwise they will leak. I cleaned mine a year ago any they are still OK.

[DougLoBue]

Oh yea I'm more than aware it's the cluster... The vagcom tests prove it.

I have an extra cluster that the tach doesn't work and the oil light flashes, but everything else is perfect. I removed the gas gauge motor from the good cluster and plan to install it into my current cluster. I'm gonna line it up with the vag-com tests- or I hope it all works out that way. I've read it could be the firmware for the cluster as well.

Process part one- the good cluster stripped down:

[jbrehm]

Doug, let me know if that works out for you - I (and every other TT owner ) have the same issue, and also a spare cluster.