Fuel Gauge Reset?

[Clamjouster]

Anyone got any ideas how to reset the digital fuel gauge as I'm experiencing false readings. The car is an 07 Auris T180.

Was on 2 bars this morning so tanked up. Got back in the car and it was still on 2 bars.

Just in case I'd done something really stupid in my half asleep state like pouring the diesel all over the floor instead of the tank I took it to a station during my lunch break to really brim it up the filler neck. Car now says I have 3 bars.

I have no problem with using the trip computer to gauge how much I've got left but have found this anomaly a little disconcerting, surely there must be a way to recalibrate it myself rather than take it to a main dealer.

I'm familiar with this type of gauge as my Gen 7 Celica had one too. Initially it's all very "Ooooh Nightrider" but I soon learned to hate it as they are useless compared to a proper analogue gauge.

Any thoughts or advice would be greatly appreciated.

[Raistlin]

Instructions

1/ Ensure that all of the wire connections are clean, secure and corrosion-free.

2/ Check your fuel gauge fuse if the gauge's indicator stays on empty when your turn on the ignition. If the fuse is good, join the sending unit connector to ground. Replace the sending unit if the gauge indictor moves to the full line.

3/ Ground the terminal located on the back of the fuel gauge with a jumper wire if the indicator doesn't move. If it does move, consider replacing the wire between the fuel gauge and the sending unit. A poor ground is frequently responsible for fuel gauge problems.

4/ Release the wire that connects to the fuel tank's sending unit. Confirm that there's no worn insulation that would permit wire contact to the body or frame. A fuel gauge reading of full generally indicates a problem with the tank unit, not the wiring.

[Awebb180]

either faulty sender unit on tank or another 1 I cant remember off the top of my head, left Toyota a few months ago and i had to do a warranty claim on this for a customer. Maybe Devon Aygo can help

Alex