Other Fuel System Tank Filling/charging Problems of Toyota Tundra

Very serious malfunction with air injection pump. This happened to occur after filling up the gas tank. Multiple dashboard lights came on and the truck went into limp mode. This could have caused a serious accident while on the highway. $2000 plus in repairs for a very dangerous and apparently well known problem with recalls issued in previous model years of Tundra and other models of Toyota trucks.

See all problems of the 2012 Toyota Tundra 🔎.

Upon filling up with fuel at various fuel stations, when the pump shuts off and is removed from the filler neck, fuel begins to come back out the filler neck and pour out onto the vehicle and ground. Vehicle only has 2000 miles on it and has done this from day one. The spills have ranged from a cup full to half a gallon making a hazardous and potentially deadly situation. Another dealer in nm advised some Toyota vehicles have done this due to a defective overflow valve in the fuel tank. My local dealer has had me return several times even though I have video evidence of the defect. Toyota USA has also not been helpful with trying to fix the problem.

See all problems of the 2020 Toyota Tundra 🔎.

I purchased my flex fuel Tundra 5. 7 in November of 2011. I started to experience issues with cold starts in December of 2012. I had an extended crank time, and it would take multiple attempts to start the truck. I took it to the dealership for the first time in January of 2013. The dealership reset my computer. The issue seems to be resolved. The following winter, in December of 2013, I started to experience the same issue with cold starts. The dealer apparently reset my computer again. Just a month later, January 2014, the extended crank on cold starts began again. This time, they told me my alcohol density was reading 49%. They said it should be at 85%, however, I am not using straight ethanol gas, which I told them numerous times, so my reading should not be 85%. I was told the computer should reset to 0 when I fill up, but my truck is not. It's just building up, which results in an inaccurate alcohol density reading. The dealership told me that the only current solution is if my tank drops below 1/4 tank, I should only fill it half way, drive it gently, and then go back to fill it the rest of the way. After filling it, I was told to let it idle, and drive it gently when I pull out of the gas station. This is unacceptable. Following my last visit to the dealership, when I refilled my truck for the first time after the last reset, the 'miles to empty' was reading 425! my truck usually ranges between 300 and 320. The 426 miles to empty reading only happened once, but again, the inconsistency and inaccurate readings are nonsense, especially on a $35k+ vehicle. Since then, I have researched the issue, and I'm not the only Tundra owner with this issue. Other flex fuel Tundra owners are having the same issue.