fuel sending unit access

[Phx Mike]

Calibrating the gage in my car was a bit different than what is shown in the video link attached above. My car has the odometer and fuel gauge built-in as a small LCD screen in the speedometer. There is a button under the dash that cycles the gauge through its various modes including trip odometer, fuel gauge, and peak speed indicator. In order to get mine into calibration mode, I have to turn the key on while pressing that button. Doing this brings up a menu on the small ECD screen. One of the options is a speedometer calibration, the other is a fuel empty calibration, and the third is a fuel full calibration.

Once you have selected the appropriate calibration you want to perform, it calibrates the fuel gauge for that mode it to the current fuel level. Therefore you calibrate the fuel full level when your tank is full, and the fuel empty level when your tank is empty (or close to it - as noted above you never want to be totally empty). The full calibration is easy, Just do that after you fill up. For the empty calibration, I was too lazy to drain the tank, so instead I filled the tank and drove approximately 350 miles (my car has the 42 gal tank). Then I calibrated the empty level before I filled it up. I ended up putting about 30 gallons in, so empty on my car means there’s about 10 gallons of useful fuel left.

Hope this helps.