Question about Audi TT

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On the display where the numbers show how many mpg you are getting, or how many miles left until you are out of gas, part of the number lights are missing. For instance, the 8 looks like a 0, a 3 looks like a ]. It is very difficult to know what these numbers are. My gas tank guage always says it is full, so that is no help. Any easy Ideas I could try? Thanks

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  • Fi5ve Oct 29, 2008

    same problem when it's getting bit cold or just starting the car. 00 a4 2.8L Q

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Hi aguamom
im dave

usually the displays need to be replaced as whole unit and i doubt it would be worth the expense.

as for the guage if you can access your fuel sending unit on top of your fuel pump you might try unplugging it cleaning the contacts and plugging it back in. The fuel sending unit has a negative resistor in it so when it does not work it will show full. On some newer vehicles you can access the top of the fuel pump throgh a trap door under the back seat or in the trunk. the fuel pump is on top of the gas tank so that should give you some idea of where to look for the trap door. If your car does not have a trap door you would likely have to lower the fuel tank to access the sending unit unless you can get your hands up aroune the tank and reach the little connector on top of the pump. A telescoping mirror available for a couple of dollars at most auto parts stores accompanied by a flashlight would be very helpful in this scenario. If unplugging it cleanig the connections and plugging it back in does not restore your gauge you would likely need a new sending unit which may or may not be integral with the pump. I can find that out for you if you get that far. If it is integral with the pump i wouldnt bother replacing the pump to make your gauge work as it is not economically justified. My guage is integral with the pump so I just fill my tank to full and reset the trip odometer knowing that i can get approximately 550 km from a full tank. I then refill it a 400 km as i dont like to use the fuel from the bottom portion of the tank because that sends all the sediment and junk at the bottom through the system and clogs the fuel filter.

Posted on Jul 20, 2008

  • timnrosa Mar 19, 2011

    very helpful thank you. I would have dropped the tank

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