2012 Toyota Tundra fuel system problems

Filed Sep 10, 2024 · Fuel system · 20,000 miles · OH

The contact owns a 2012 Toyota Tundra. The contact stated while accelerating from a stop, the vehicle started leaking fuel, and the contact smelled an abnormal fuel odor. The contact turned off and restarted the vehicle, and the fuel leak stopped. The vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the fuel tank valve assembly needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure and a case was opened. The failure mileage was 20,000.

Filed Aug 8, 2024 · Engine, Fuel system · NJ

Wife was driving truck and immediately went into limp mode on the highway. Check engine light came on, no accelerating then died. Had to get it towed. This is the 3rd incident with this issue.

Filed Feb 14, 2024 · Fuel system · CO

The fuel pump failed on my Tundra. Several dashboard check engine lights suddenly lit up to warn me of the issue. While I was able to safely get it to a mechanic to repair the independent Toyota certified mechanic I use shared they have seen a volume of these where the car stops immediately with the Fuel pump failing completely. I was lucky as the day prior to this I was driving through mountain passes on the highway in Colorado. I have since found out from the feedback from my mechanic that they have repaired a volume of these, and it is a known issue by Toyota who issued a technical service bulletin. The fuel pump needs to be replaced with a different specification - the original pump is not sufficient. My concern is putting driver/passenger safety at risk with a complete fuel pump failure while driving. I consider this a near-miss for me, and would worry about others that are about to have this issue.

Filed Dec 14, 2023 · Fuel system · AL

ECM safety recall air injection pump failure

Filed Jun 2, 2021 · Acceleration, Fuel system · TX

2012 Toyota Tundra has a known design flaw in that moisture is allowed to condense, accumulate and corrode in components of the secondary air intake system leading to decrease performance especially in regards to acceleration which is critical to operating a vehicle safely.

Filed Aug 21, 2020 · Fuel system, Transmission · 87,000 miles · NJ

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.

Filed Aug 7, 2020 · Fuel system · LA

The trac off light and check engine light cans on at the same time. I took it to toyota and they said there was an extended warranty of 10 years of 150,000 miles. If it was the secondary valves and air pumps. I got a call back and they said it was, big my VIN was not part of the extended warranty. This is an issues with 100s of tundras. This is a safety issue. Because you can't go over 60 or get to 60 safely. The toyota blogs are full of tundra owners complaining. This needs to be fixed.

Filed Jul 30, 2020 · Fuel system · 87,860 miles · LA

My 2012 tundra had a trac off and engine light come on. This is the same problem for numerous toyota tundra in regards to failure of the secondary air valves and pumps. I was told my VIN number was not on the 10 year , 150,000 mile warranty for this same problem. I urge you to force toyota to add my VIN number to the extended warranty. My vehicle cannot go over 60 and be safe. It was raining and rain got into the pump system. Toyota has replaced thousands of these badly designed system and more needs to be done. It cost over $2,000 to replace badly designed system.

Filed Jul 15, 2020 · Fuel system · 101,000 miles · VA

2012 toyota tundra 4.6 l at 101,000 miles went into limp mode causing a lack of power and acceleration during city driving which could have resulted in a rear end collision. Was able to limp vehicle to nearby toyota dealer who diagnosed that the secondary air injection system was faulty. Cost to repair was more than I wanted to pay beingthat I had just purchased the truck within the past month or so. Toyota did not cover the repair so a bypass kit was installed at my expense to get the truck back under power. Contacted toyota and they advised that the system was not covered however it should be noted that on 2010 models and others the warranty on the system was extended to 150,000 but not on the 2012 4.6l engines that have the same problems as the others.

Filed Apr 10, 2020 · Fuel system · 97,000 miles · LA

Tl* the contact owns a 2012 toyota tundra. The contact stated after the check engine light illuminated, the vehicle was taken to walker toyota (5735 coliseum blvd, alexandria, la 71303) to be diagnosed. It was determined that there was a hesitation in response when the accelerator pedal was depressed. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 97,000. *ln consumer stated manufacturer is aware of the issue with 2010,2011, and 2012 fuel/propulsion system (pws) toyota tundras. Update: toyota technician stated issue may be pumps and valves.