2006 Toyota Prius: wrong fuel gauge reading

Filed Dec 26, 2024 · Acceleration, Electrical · ID

The light up display for the odometer, fuel gauge, and speedometer does not always light up. When it is not lit, the cruise control and any warning and informative alarms/lights also do not work. This is a well-known issue among owners of these cars, related to the capacitors on the circuit board for the display being defective, and there is extensive documentation of it online. It may also have had a technical service bulletin released for the issue, but I'm not entirely sure. The light goes out intermittently and is not always consistently out. I did mention it to the service personnel when I took it in to get recalls repaired recently, and they didn't seem surprised or unaware of the issue. I did not ask them to diagnose or fix it, as I know I can get it done for a better deal elsewhere.

Filed Apr 2, 2024 · Electrical, Engine · NC

One afternoon, in the Summer of 23, I entered my Toyota Prius to run some errands. Once I proceeded to power on the car, none of the dashboard lights illuminated. This included the gas gauge, speedometer & transmission indicator. Fortunately, I was only driving a few blocks down the road from my residence as I live in a small rural town with little congestion, little traffic and mostly two-lane roads. I can't imagine this occurring in a much larger metropolitan city. When I arrived at my destination, I discovered that my Prius wouldn't shut off. This dashboard malfunction was preventing the Toyota from powering off. I quickly completed my errands with my vehicle running during this entire ordeal. Finally, when I returned home, I frantically researched on YouTube regarding this issue and discovered many others who also were having these no-illuminating-dashboard problems. Some YouTubers offered workarounds but the solutions will be temporary as the problem will eventually worsen until the Prius owners have no working dashboard lights. From the way I understand it, this problem is nothing more than a small computer board that's behind the speedometer and this computer board has a small diode that tends to burn out on all kinds of Toyota Priuses when it reaches around 150,000 miles.

Filed Aug 26, 2017 · Acceleration, Electrical · 140,000 miles · AK

I believe its a glitch in the car's computer. At unpredictable and intermittent intervals the electronic heads up display does not operate. This leaves me with no speedomoeter, no fuel level indicator, no bright or dim indicator for the headlights, and the cruise control does not work. During the incidents the car also might not respond to the power off button, so it keeps running. This problem might last for a day or two and then it starts to work again.

Filed Jun 14, 2017 · Electrical, Engine · 163,690 miles · TX

Afternoon 07/11/17 while driving downhill @ 50 MPH my 2006 toyota prius turned off- no steering, exterior lights, dash/computer lights, radio- except for front interior dome light. No warning lights prior to or after car turned off. I was able to brake (very stiff brakes) & pull over. Replaced 2015 12v battery hoping for quick fix. Car still would not turn on, could not be towed on flat bad for fear of damaging transmission. Car was towed to closest mechanic. On 07/12/17 independent mechanic said both coolant pumps failed and the leaking shorted a fuse and turned off the car. Every time they attempted to replace fuse it would pop fuse again. Mechanic replaced water pump (including coolant/antifreeze) & inverter electric pump (including inverter cooler water) & changed auto transmission fluid & filter ($1,115). Early morning 07/14/17 dash display would not light up when car was turned on- no speedometer, odometer, gas gauge, reverse camera. (happened couple of times in past but could not duplicate for dealer.) while driving to toyota dealer I noticed computer screen stuck @ 48 mpg & 61 miles driven, but never increased miles as I drove 18 miles or updated mpg calculation. Refused to turn off car until someone from toyota dealer looked @ dash to verify condition. Toyota dealer says combo meter (combination meter) failure, which is not recall but "campaign" that expired & repair costs $1,111. Motherboard part can take up to 3 weeks but car cannot be driven while toyota "burns" my computer's information into new computer part. Toyota dealer provided loaner car until repair is completed. On 07/14/17 called toyota & filed complaint about water pump & combo meter. Toyota says hybrid electric water pump campaign did not affect my VIN, which I do not believe. Toyota says combination meter campaign expired for my VIN. Pending call back from toyota at this time.

Filed Apr 2, 2017 · Electrical · 19,077 miles · NY

Car was brought to toyota of hollywood, florida for a new battery. When it was returned none of the dashboard was working: no speedometer, no gear shift indicator, no fuel gauge, no engine warning lights, no backup indicator beeper. Additionally it takes many tries over minutes to turn the car off and it locks the rear hatch which cannot be opened with the inside door unlock button. Obviously this is a dangerous and hazardous situation which I expected that the dealer and manufacturer, toyota, would take care of immediately. They claim that the car is out of warranty and won't fix it. It should be part of a vehicle safety recall.

Filed Mar 28, 2016 · Electrical · 283,000 miles · CA

Without warning the dashboard stopped working. The car was stopped and power button was pushed at the time when fact occurred in a very isolated place with no cell phone service an little chance of any other car passing by. The car does not display anymore speed, mileage, fuel level and gearbox position, although the car was otherwise driveable. Warning lights are not working anymore also. Backup camera and lights also stopped working. Car also does not turn off most of time (the power button might work at random with some insistence). According to information gathered this could have been caused by a faulty combination meter, which toyota was servicing for free for some time owing to a high failure rate.

Filed Jan 5, 2016 · Electrical · 250,000 miles · MS

On very cold mornings the combination meter (speedometer and dash lights) fail to come on. This first began in december 2014 shortly after having the ice replaced at the dealer, but it has been very intermittent. A few tries and the problem usually corrects itself. It is rarely very cold here so getting it to repeat the problem is difficult. Toyota issued an extended warranty on the known defect but it expired 4 months ago and I was never notified of the warranty extension. Toyota is aware that there is a defect. When this happens, the car will drive but there is no speedometer or fuel gauge and the odometer ceases to work. I did not take the car to the dealer last winter because for one thing I couldn't make it repeat the problem and also because I suffered a grand mal seizure and was unable to drive the car for a year. Now I can drive again and everything has been fine until now that it is winter again. Toyota claims they notified me of this warranty extension but I never received a letter from them. I think it is a dangerous and known defect that should be repaired by toyota. I do not like driving without instruments!

Filed May 9, 2015 · Electrical, Fuel system · 177,343 miles · AZ

Parked car at night in colorado in february, 2015. Outside temperature was approx 25 degrees farenheit. We ate dinner at a restaurant, came out and started the 2006 prius. Instrument cluster panel showeing the fuel gauge, odometer, shift position and speedometer failed to come on. Turned car off and on numerous times - no instrument cluster panel lights. The following morning, the instrument cluster panel worked fine. This has happened occasionally since the first incident in february. This is a safety concern; one is unable to tell which gear the vehicle is in, the speed of the vehicle, or how much fuel the vehicle has. After contacting toyota, they told me the extended warranty had expired in december 2014. As a safety defect, toyota should still be covering a known problem.

Filed Mar 2, 2015 · Fuel system · 100,000 miles · IN

Tl* the contact owns a 2006 toyota prius. While driving at an unknown speed, the vehicle suddenly shut off without warning. The contact discovered that the vehicle was out of fuel although the fuel gauge indicated that 1/4 tank of fuel was in the fuel tank. The vehicle was towed to the dealer, who diagnosed that a faulty fuel bladder caused a false fuel gauge reading. The computer was reset, but the vehicle continued to experience the failure. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 100,000.

Filed May 2, 2014 · Fuel system · 100,650 miles · IN

The prius was being driven up a hill when it suddenly stalled and the gasoline engine died. It was very difficult to safely move the vehicle out of traffic, since the electric mode was not capable of moving the vehicle forward up the hill. The vehicle's fuel meter on the dash displayed 3 bars remaining (indicating there should have been over 1/4 tank of fuel remaining). The vehicle was towed to a toyota dealer, who said a software reload and cleaning the throttle bottle fixed it. A little over a week later, the vehicle was being driven on interstate, and the driver was passing a semi-trailer. While in the passing lane, the vehicle stalled again, and caused great danger as it had very little electric power to limp to safety. The gas engine would not run or start again, with the exact same symptoms as before. Again the fuel meter showed 3 bars remaining. However, it was found that it took over 11 gallons of gasoline to then fill the tank, and the total tank capacity is in the 11 gallon range. A search of the internet resulted in other similar complaints, with one entry citing a toyota technical manual that included the statement regarding the fuel gauge, "the inclinometer must be reset if the customer complains that they can only pump a few gallons of gas into their tank or that they run out of gas with three or four bars left on the fuel meter." it is very concerning & frustrating that toyota apparently is aware that their vehicles can run out of gas unexpectedly due to a faulty fuel gauge, and it can place the operator and passengers in great danger. I have contacted the toyota dealer about the expensive repair bill ($300) that did nothing to address the cause of the problem. They are willing to look at the car again, now that they understand it is likely a bad fuel gauge system, but this is a very dangerous situation that toyota has apparently known about.

Filed Feb 5, 2013 · Acceleration, Electrical · 112,000 miles · MI

Car's engine would not shut off. Additionally, the digital dashboard (which shows the speedometer, odometer, gas gauge, etc.) would not light up. Toyota dealer says it is due to a failed combination meter. The part is on national backorder. It has been more than two weeks and my car is still awaiting the part.

Filed Dec 4, 2012 · Electrical · FL

The electronic display inside my husband's car has blacked out twice now. Both times it was taken to the dealer. The first time, they were not able to locate the problem; the second time they were able to discover what was wrong, told him that it was a common problem in that model car (approx. 2004-2010), that there was no recall for it, and it would cost $700 to repair. If this is happening to other owners, why isn't there are recall? When it happens, the speedometer is gone. Warning lights, fuel gauge, back-up camera, etc. Are all out. This makes the car unsafe to drive.