The Fuel Gauge May Read Incorrectly on Toyota Prius

Problem Description and Possible Solution

The fuel gauge may read incorrectly. Our technicians tell us there is a recalibration procedure which should be performed to correct this issue.

Problem Data
RepairPal Verified
Average mileage: 102,481 (19,000–258,000)
13 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013, 2014
116 people reported this problem
Viewing 1 - 20 of 69 comments
I cannot fill up the gas tank beyond 4 or 5 gallons when the fuel gauge is on 2 bars. The fuel gauge reads full but is not and the gas hose keeps clicking off like the tank is full. This is the first time that this has happened to me. 11-5-2015

Did anyone find a fix for this issue?
The miles per gallon says i am getting 47 mpg and i have only driven 150 miles from a full tank but the gas gauge shows i am at half tank. The gas gauge is wrong. It is going down much faster than normal. I should be at 7 bars or maybe 6 bars not 5 bars. What can i do to recalibrate the fuel gauge?
I filled up my Prius with gas when the gas gauge read flashing low, 1 bar. Driving home I noticed the fuel level hadn't changed and still flashing! Got on line to find out about the problem and it turns out this is a common problem! I know usually this requires a fuel tank removal and replacement of the fuel gauge sensor and filter which is very costly. I'll shop around for some simpler answers like recalibration and electrical connections first... BR
One year ago, the fuel gauge dramaticallly changed, going down much faster than the mileage would have indicated. Keeps getting worse, now starts blinking as though empty and still has about 4 gallons in it. The Toyota dealer is telling me it can't be fixed. They did try to recalibrate it but that didn't fix it.
I have run out of gas three times, once in a dangerous place because the fuel gauge doesn't work anymore. They told me it would cost $1000.00+ to fix it, so I just watch the miles traveled, but that is a pain too.
Gas gauge was at 1/4 full and I put 5 gallons in tank and gauge has not moved. I have made 3 trips equaling about an hour worth of driving. My 2008 Prius Touring should be almost full. JTDKB20u987765535
Gas gauge tells me the tank is empty after only going through about 300 miles, then I can only refill 6 or 7 gallons and the problem repeats itself. I'm sure there are probably 3 gallons left when it says it is empty but I'm not eager to test that theory.
The fuel gauge got stuck at 4 bars with a full tank of gas. The milage on the dashboard is not in sync with the one on the front panel either.
Approximately one year after I had my Toyota Prius V I noticed that the fuel gauge would not register correctly. I would fill it up and with in a day it would be down a bar or two. The dealer told me that the Prius has a bladder system fuel bag and doesn't read accurate all the time. When I inquired as to why it worked for a year? They could not tell me. Now I am learning that my year does not have this fuel bladder and it can be calibrated. Any ideas or thoughts?
The gas gauge showed 2 bars but I could only add 5,6 gals bef0re pump shut off and continued to do so. After starting the gas gauge showed 10 bars. at 199 odometer miles the gauge showed two bars again. Even at 40mg it should be at least 5. This seems like a common problem by reading the reports. What is the fix.
Filled gas tank and gas gauge did not change from half full reading. Finally Changed after four stops and thirty miles.
When I have 2 bars left on my Prius, i could only get 3.1 gallons into the tank. I opened the trunk and sat on the bummer several times and I was able to get another 1.5 gallons into the tank. So I managed 4.8 gallons for 225 miles. It appears that this problem is getting worse. When i bought it used in Aug 2014, it worked fine. Last winter, 2014-2015 I could only get about 325 miles per tank with an average of about 48mpg. Now its down to 225 miles at 43mpg.
Once my dash fuel indicator drops down to 2 bars, over the next few miles, it will increase to 3 bars and remain there until empty. I have not fixed the problem. I have run out of gas twice because of not watching my odometer.