GEN III Running out of gas with 2-3 bars left

As this car been wrecked like in the back end? Is the 12 volt fully up to snuff No not making 11.7 volts 12 is what's needed in a 12 volt system every little bit you're down from 12 volts is not too good. I'm not sure in this model of descending unit can be dealt with or not for the gas gauge that is.

 

Yes. I'm pretty sure the level bobber part of the fuel pump gets either stuck on it's own or caught on something. Ruined my day a while ago. Only thing I noticed was that pouring in gas from a gas can didn't effect it, but using a high flow gas pump did, and it hasn't happened again. I doubt there's anything you can do that doesn't involve removing the fuel pump, but if I was in your situation were it kept happening I'd probably remove it and see if I could 'work' the bobber lever around or at least gleam something about why it may be happening.

 

Try doing a redline fuel cleaner then reset fuel-level gauge

 

Perhaps not waiting until you are low on fuel before filling up????
Make a habit of not letting it go below halfway before filling up...

 

You're not being rude. 1 stoppers are great!
I never rely on any fuel gage. I've always kept track of my mpg and knew how many
gallons the tank had and knew when to fuel up.

I really dont mean to sound rude or anything, but one of the selling points for me to get a prius was so that i dont have to stop for gas as often haha it really helps on those 300+ mile trips to just knock em out in one go[/QUOTE]

 

And most of my generation 2 Prius if I'm traveling like going tank full or better away from where I'm leaving I try and put 426 mi on my generation 2 Prius most of them I have here that will leave me with the last blip or pip flashing and I put about 20 mi on that the pip that's flashing and then pull into sheets and get the blue fuel and I'm usually adding around 9.7 gallons at that point on a trip If I do this while I'm in town where I live I'm only putting in about 8.4 gallons and I've got 350 mi on the car so there's always that I am not trying to get gas until I think that I'm very close to empty and 8.4 gallons is not very close to empty 9.5 is closer I have run the car out of fuel to where the triangle comes on but because the gauge is electronic it's not very helpful so the time from the The last pip starting to flash to the time I pull over I have learned to make that about 25 mi You should be able to go close to 40 mi on the flashing pip I'm getting about 36.

 

Next time the fuel is low, remove the fuel pump sending unit, clean the contacts for the float.
It's likely sticking.... Try to clean up all the area's that move...

 

Yes in a generation 3 you have the luxury of accessing the tank the sending unit the pump so when you're low on gas is the time and your driveway or garage to open up the thing. Clean it as best you can now you can turn the car on and you can move the sender up and down and see if it's seemingly in proportion to your movements on the gauge.

 

Judging from what others have stated, it is one unit. You can't get just one
seperate part. Perhaps a junk yard, and then you can switch parts.
On other vehicles I've been able to fix a similar issue just by cleaning it.
Depending on the brand of fuel you use things can get gummed up and stick.

 

I don't know if the generation 3 regular Prius is a sealed system or not I haven't had the time to go out and tear up a gas tank in one of my cars to really take a look I know in the generation 2 you can't get at any of it because there's a bladder in the tank and his just no access in the Australian version of the same car you can access the tank there's no bladder I think there's a regular fuel pump and ascending unit just like a Corolla would have in say 07. Because I use those 05 to '07 nip and then so fuel pumps in my big bore gas scooters like BMW and Aprilia I personally have put those pumps in my scooters because they're built better than the Italian pumps that the scooters come with which are made by the famous electric companies that fail on Fiat all the time I can't even think of the name of the company You see that logo and you immediately do not want to touch it marelli or something like that

 

I like having the fuel range to be able to drive past the high-priced fuel stations and get to the areas with better prices.

Though fuel availability and pricing patterns have significantly changed in the 40+ years that I've been watching this and planning where the next fuel stop will be.