Hello. I just got my 4G TL SHAWD about a week ago. Love it with the exception of the climate controls measuring in Celsius.

The other day I noticed an issue with the fuel gauge or something fuel related. When the car was delivered it had a full tank of gas. After driving approx 200 miles the gauge read basically empty. I filled it up and the pump stopped at around 8 gallons and the fuel gauge read full. I had the same thing to happen 2 days later.

I drove approx 500 miles out of town yesterday all of which was highway driving. But this time I filled the tank up basically until I saw gas coming back out. I did this twice and both times the car took around another 6 or 7 gallons. The gauge seemed to read accurately at that point. Also the avg speed and mpg is off as well. I set the cruise control to 75mph and it said my avg was 22 mph.

The dealer is going to repair it and thinks the gauge cluster needs to be recalibrated. I was thinking it could be something else bc I didnt think the gauge cluster would would have anything to do with the car having a full tank at 8 gallons.

Any thoughts?

 

Stop over filling the tank. Fill the tank until the first click.

I'd consider trying to do a factory reset on the headunit and the MID to get all your settings back to the factory options.

If the dealer is going to repair it I wouldn't even worry about what's causing it.

 

I am pretty sure that changing the temperature can be done. i.e. C to F.

 

For your trip odometers (miles, hours elapsed, mpg, avg speed): Do you have the car set to "reset on fill-up"? The function does not work properly and randomly resets.
Gas Gauge; I don't' have any experience with this issue.

 

Yeah never overfill your tank. Let the dealer worry about the repair. Sure seems like it needs to be re calibrated

 

Thanks to all for replying.