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Discussion Starter · #1 ·
I picked up my new CM on 3/4 and did the first fill up on 3/11. I noticed on that fill up that the gas gauge took nearly 10 mins to go from empty to full. The gas light took almost 4 mins to turn off. Filled up again on 3/15 and the same thing. I actually videoed it on the 2nd fill up to show the dealer.

Another thing is that the range has displayed 0 since I picked the truck up. I thought maybe that would change after a bit, but nope. I've got 800+ miles now and according to the computer I can't drive out of the parking lot with a nearly full tank!!

Anyone have any idea what the problem might be to cause these two seemingly related failures? The slow gauge I could blame on a float, but that doesn't explain the range being 0. I have an appointment with the dealer on Friday, but I'm trying to get an idea of what it could be before I go listen to their BS.
 

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Mark it eight, Dude...
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For some reason I can't find a thread for you but it is a known issue on 2010's I believe.
 

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Its the slow gas you're using. Pay the extra nickel for the fast gas and watch that needle pop! You're welcome. :D
 

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My 2010 does the same thing but the range part works fine. When my tank drops to around 1/2 tank the needle will sometimes drop down to E and the low fuel light will come on. If I stop the truck and let it sit for a few minutes the guage will return to where its supposed to. Then when I take off again it will drop. I believe it is the float not floating right haha. I need to get mine to dealership to get it fixed as I already have almost 30,000 miles on it. Two more months and it will be out of warranty.
 

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I just got mine back from the dealer for this issue. They dropped the gas tank and tested the Ohm's on the fuel sensor. It tested fine. Their rationale is that refilling with 6 gallons is preferred by Toyota rather than running the tank down to less than 3 gallons. My fuel range today said I had 11 miles to zero. I filled up and put 20.6 gallons of fuel in my 27 gallon tank. Looking forward to the fix for this.

2010 Tundra Crew Max
 

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I just got mine back from the dealer for this issue. They dropped the gas tank and tested the Ohm's on the fuel sensor. It tested fine. Their rationale is that refilling with 6 gallons is preferred by Toyota rather than running the tank down to less than 3 gallons. My fuel range today said I had 11 miles to zero. I filled up and put 20.6 gallons of fuel in my 27 gallon tank. Looking forward to the fix for this.

2010 Tundra Crew Max
putting 20 gallons in a 27 gallon tank when it reads 0 or close to 0 is not something that needs to be fixed. its normal. its been discussed alot. so unless the gauge isnt reading correctly, if its just the fact that it appears to be 6 gallons off when it says 0 miles to empty, its not broken, there is no fix. its the way its designed and all of them since 07 and the sequoia's are the same.
 

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Discussion Starter · #7 ·
I guess I should follow up on this for anyone searching later. The dealer tested everything. Did a hard reset of the system (whatever that is) and the Range started working. They took it to fill it up, and the problem was still there. That's when they decided to drop the tank. I had purposely taken to them on empty to try and make it easier on the tech. After dropping the tank, the tech said that he could see where the sensor had been sticking (I'm assuming he meant the float was rubbing), so they ordered a new fuel sensor sending unit. Took the truck back again (3rd time) to have the sensor installed and everything has been great since! The range works and the gauge moves to full immediately upon fill up!

Like everyone else, I still have 6 gallons in the tank when the fuel light turns on. That's just a bonus 'feature' of this truck! From what I can gather from reading here and other places, the generally accepted reason for having the gas light come on with 6 gallons left is that the fuel in the tank is what helps keep the fuel pump cool. If you run that level of fuel too low, the pump could overheat and fail. Six gallons still seems like an excessive amount, even for that reason.
 

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I guess I should follow up on this for anyone searching later. The dealer tested everything. Did a hard reset of the system (whatever that is) and the Range started working. They took it to fill it up, and the problem was still there. That's when they decided to drop the tank. I had purposely taken to them on empty to try and make it easier on the tech. After dropping the tank, the tech said that he could see where the sensor had been sticking (I'm assuming he meant the float was rubbing), so they ordered a new fuel sensor sending unit. Took the truck back again (3rd time) to have the sensor installed and everything has been great since! The range works and the gauge moves to full immediately upon fill up!

Like everyone else, I still have 6 gallons in the tank when the fuel light turns on. That's just a bonus 'feature' of this truck! From what I can gather from reading here and other places, the generally accepted reason for having the gas light come on with 6 gallons left is that the fuel in the tank is what helps keep the fuel pump cool. If you run that level of fuel too low, the pump could overheat and fail. Six gallons still seems like an excessive amount, even for that reason.
Actually, it's all about giving you an early enough warning. If you are towing, you may only be getting about 8 mpg. So, in that scenario, it only gives you 48 miles warning that you need to fill up. Seeing how you may be many many miles from a gas station in some parts of the country, thats not really excessive.
 
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