Refueled the truck, started it up right at the pump and the check engine light came on. Drove it right over to the dealership and they kept it for two days and said that we needed to stop topping it off and make sure the gas cap was on tight. We told them that this was an insult to our intelligence. We have owned 2 prior Tundras, 7 Honda accords and 1 toyota camry. NEVER have we had a problem such as this (contaminated charcoal filter) filling a vehicle with gas. We told them this truck was either a LEMON or the 2007 Tundra has a design issue and contaminating this filter should not be so extremely sensitive. This is unreal as they continue to point the finger back at us and continue to deny that there are NO such reports on the 2007 Tundra. We are the only ones with this problem!!!!!. I wrote the BBB yesterday so will see where that goes but Toyota is never going to stand behind their product. I will never buy a Toyota Tundra again. I'm going back to GMC. They have really messed up with us. We used to be known in the neighborhood as the Toyota family. That is about to change. Spoke to the Toyota headquarters guy and he pretty much blew us off and just repeated what the dealership mechanics said to us. Essential calling us idiots and liars. Where does one go from here................

Update from May 24, 2012: Well the Toyota dealer in Albuquerque NM could not resolve my problem. I had put only 209 miles on my truck and I was getting ready to travel to Wisconsin to visit my 91 year old dad, started up the truck, and the "check engine" light came on. I let the jokers in Albuquerque look at it again and they suggested that I do an experiment to help them resolve this problem. They suggested that I only fill the tank up 3/4's will travelling back to Wisconsin to see if the light would resurface (again I think they were accusing us of overfilling and this way they would keep us from doing so). When I got to Wisconsin I took my truck to the Toyota dealer in Racine, Wisconsin to get a new perspective. They told me they see this problem all the time and assured us that "we were not the only ones with this problem". They did the "smoke test" and found a leak near the gas cap. They replaced the gas cap with a new one, redid the smoke test and it still leaked. They found that the filler hose had a crack in it and replaced all the hoses (this is why the canister was being contanminated). Repeated the smoke test and found that the new canister was again contanminated. They replaced the canister and it finally cleared the smoke test. This dealership went the extra mile and for that I will forever sing their praises. I am now getting better gas mileage than ever and the truck is running great. When I get back to Albuquerque, I plan to visit the dealer there to update them and have them reimburse me for charging me for a new canister when the jokers should have looked into what was causing the problem....They were convinced we were continuing to overfill and we were the problem. Thank you Gentile Toyota in Racine Wisconsin.

This story starts in October 2008 but today's visit to the dealer put the frosting on the cake...........This is the second occurrence for replacing the charcoal canister in this vehicle. The canister was replaced at around 32,000 miles and we were told we had been topping it off. So we have been "extremely" diligent (almost paranoid) when fueling the vehicle and when the pump pops off we hang it up. We then tighten the gas cap making sure it clicks as we were accused of also not placing it on correctly. I've never had so many issues putting gas in a vehicle before in my life. Should it be that difficult? I have owned 3 Tundra's, a 2000, 2003, and my current one the 2007. I think Toyota should do a recall on this vehicle for this problem alone. I have made so many trips to the dealer regarding this issue as it starts out with a "Check Engine" light coming on. I would take it to the dealer and they first told me the gas cap wasn't on tight enough. Then a week later the light came on again and they told me if I kept bringing it back, they we're going to have to start charging me for resetting the Check Engine Light. So I bought my own decoder and about a week later the light came on again. Code is almost always (when it starts) P0456 - very small emissions leak. I took it in and they replaced the gas cap. About a month later I got the Check Engine light again and we could smell raw fuel just standing next to the truck. Bottom line and I have all my service records, I was told the canister was ruined from us "topping off the vehicle during refueling". They replaced the canister in December 2009 with 34,711 miles on the vehicle. Almost 2 years to the day and 61,200 miles on the vehicle, the canister has a small crack in it. The part is $900 dollars and the labor will be $325. They are willing to pay for the part but they want us to pay for the labor. Keep in mind also that when I purchased this truck (one of the first off the assembly line) I purchased the extended warranty $1586.00, 84 mos or 70,000 miles and the Century Products Maintenance Pkg $449.00 and I paid top dollar for the vehicle since it was one of the first $43,702.98. I really expect more from Toyota and feel they should stand behind this defect. They have a recall for my "floor mats" and a sticky gas pedal but not this defective fueling system???? I'm sure we are not alone. If you run a check on the P0456 code for charcoal canister, this problem is quite extensive.

I'm a long term Toyota fan, and this is the fourth Toyota in twenty years I've owned( A new 1990 pickup, a used 1990 4Runner, a new 2002 Tacoma TRD, and now a used 2007 Tundra Limited TRD.). So given they're track record for design, quality, and reliability, I was excited when I purchased my used 2007 Tundra Limited TRD with just over 28,000 miles on it( after first having it thoroughly checked out). It was roughly three months after paying $36,000 for it, that I was surprised to find out the new 2007 Tundra has a fatal design flaw that's going to stick most 2007 and up Tundra owners with an expensive $1,087 repair bill. My ordeal began when my Tundras "Check Engine" light came on and I found out it had something to do with a Charcoal Cannister( part of the emissions system). When removed and taken apart it was discovered it was contaminated with fuel and needed replacing. The mechanic working on my truck told me he'd seen this before with the new Tundras, and that it was because unlike other years the new ones mount the Charcoal Cannister lower than the the gas tank, so if overfilled "even the slightest", fuel will get into a line via the vent valve,and instead of staying there harmlessly till it evaporates, it will flow directly into the Charcoal Cannister ruining it completely. Thats when I was told it would cost $1,087 to replace, and that Toyota wouldn't cover it by the still existing warranty! Now this is the fourth Toyota I've owned and sixth vehicle overall, and I sometimes top off the tank( Most people probably do), usually if going on a really long trip, and never had a problem before. But now I find out after the fact that because of a bad design change, putting too much gas in your Tundra when filling it up will destroy an extremely expensive part, and Toyota won't cover it, thats bull! This is something that vehicle owners have been doing for almost a century (putting as much gas in their vehicles as they can). I find it really alarming since there are tens of thousands, if not well over a hundred thousand 2007 and up Tundras out there with this design flaw, and that most of them will probably have this problem sooner rather than later sticking they're owners with an extremely expensive repair bill, providing a huge windfall for both Toyota, and dealerships alike. Well thats my story and I hope it helps future Toyota buyers. If you've had a similar problem with your 2007 and up Toyotas "Charcoal Cannister" I'd like to hear from you. Email me at: kaviar4chris@yahoo.com