I took my Tundra in for a oil change and the dealer ship said I have oil leak at the timing belt. It would be over $1600 to fix this. It is time consuming for the labor rate is high. The truck only has 45,000 miles on it.

- Killeen, TX, USA

My truck has been having hard start issues since winter 2017. I figured it was my battery so I replaced it, but it didnt help. The hard start wasn't consistent so I chose take some time to see if any other problems surfaced. Got through winter 2018 and spring/summer 2019 with it still starting rough on occasion. By October 2019 my truck reached approx 78K miles, and one day it didn't start at all. Took three tries to get it going. I had the battery checked once again. It tested bad but it was under warranty so I had I lt swapped out. The problem persisted. This time it gave me an engine light. Mechanic said it was an 'evap code' and recommended I replace the gas cap to start. Code didnt return but still hard starting. Took almost two months and engine light came back on. This time P1604 startability malfunction. Was told I had to take it to Toyota to get a reflash. I decided to do some research and came across the problems Tundra owners were having with this FFV density sensor malfunction. Printed the old service bulletins and went to Toyota to talk to service dept about it. They said Toyota just put out a new service bulletin in December 2019 for the reflash but now also replacing the fuel pump (Toyota told me density sensor attached to the pump). Unfortunately Toyota also told me they won't cover the cost since my truck had just gone over 80K miles, and they are not flexible with that at all, even though I told them it started before 80K. T-sb-0166-19. So I got prices. The reflash is about $140 and just the cost of the pump itself is $600, not including labor. I have spoken to the Toyota usa customer care team and they said they cant help me since I didnt take it to the dealer to diagnose it. Apparently it doesnt matter if you have service records from another shop. This is my 3rd Toyota, and I love my truck so this breaks my heart.

- Durham, NC, USA

When driving my check engine and "trac off" light comes on and the engineer will not accelerate above thirty miles an hours. If you disconnect the battery and reset the computer it will work for about three mile then the check engine and "trac off" light comes on. This is the same indication earlier Tundra models have with secondary air injectors recall. An it is widely documented online as a problem for 2012 Tundra's. yet Toyota continues to denies it's a problem and is not covered under the recall.

- California, MD, USA

Driving in highway traffic and engine reduces power significantly causing the vehicle to rapidly slow down and become a hazard in traffic. Took it to dealership and they said the secondary air injection system needs to be replaced for $3300. This is a known defect for the previous model year. I contacted Toyota hq and they refused to cover repairs for this know design defect.

- San Antonio, TX, USA

* ongoing manufacture defect / safety concern with 2012 Toyota Tundra 4.6. code P2440, secondary air injection. Bank one open.---check engine / trac off lights / engine in "limp mode" * documented recurring incidents on 4-2-19 and again on 10-12-19 after costly out of pocket repair. * my 2012 Toyota Tundra 4.6 motor double cab has experienced the air injection pump failure twice in a six month period. This failure is a safety hazard leading to loss of power and vehicle control. The first occurrence was after a 2,000 mile trip. Driving downhill the dash lights (check engine / trac off) came at highway speed and immediately vehicle power reduced as we tried to power up the next hill. We were able to avoid being run over by following vehicles by pulling off the road, and limped to the nearest mechanic shop. Contacted 3 dealers and Toyota corporate with no positive outcome. All parties acknowledge the ongoing defect but will not pay or offer a solution to end the problem. Paid out of pocket for expensive repair. The 2nd occurrence six months later found us again unable to reach or maintain safe highway speeds. Avoid dangerous highway situations, or ability to climb hills. Both instances occurred without warning. * this emission control defect that Toyota has known about since the 2007 models. They even extended the warranty through the 2011 model year. Toyota also claims the problem is neither drive-train nor emissions related. After many attempts at the dealer and corporate level, Toyota refuses to extend repairs for this well documented defect beyond the 2011 model. Toyota suggests that when enough complaints are recorded, they will extend the warranty on newer models. The lack of support from dealers and corporate Toyota is alarming. The repair out of pocket is expensive (from $500 for a temporary repair to $4000 for a replacement from the dealer.)

- Canyon Lake, TX, USA

When cranking the vehicle all of a sudden as of 5 days ago the check engine light appears along with 'track off' indicator. This throws the truck in 'limp' mode decreasing the power of the vehicle by 50%. this happened the first morning and I was entering a on ramp to get on the high from my neighbor and almost got plowed over due to not being able to properly accelerate to highway speeds while entering the ramp. I had a technician check the issue and was told it has to due with the 'secondary air injection valve' failing. After about four days of research I found this is a common problem it not just my vehicle but multiple years and motor sizes. Toyota apparently covered certain year models/vine but when calling regarding mine they said my vehicle wasn't covered evening though there are thousand of consumers having the exact same issue. This issue is also an expensive repairs cost upwards to $3,500-$400 to fix. Toyota is aware of the problem and apparently doesn't care that it also cause safety issues with the vehicle not having proper power to operate. This is a manufacturing defect plan and simple.

- Bedford, TX, USA

This complaint is the same as many I see here and across the internet. Driving on the Washington DC beltway and my 2012 Tundra goes into limp mode which reduced my power significantly causing a unsafe situation to say the least.. dealer said problem was with secondary air injection system and the repair was very expensive. Now 12 months later the truck is having the same problems. This is an inferior system that Toyota should stand behind and cover all the costs associated with fixing instead of charging Tundra owners after they've already spent hard earned money on the vehicle purchase. This is a wide spread problem that Toyota is not owning up to.

- Falls Church, VA, USA

I was coming off an entrance ramp merging into traffic on to a 4 lane highway when my check engine light, trac off light and blinking 4 loe came on. The engine went into limp mode greatly reducing my power and it felt like my steering control got loose. I had to pull off the road to keep from being run over by faster traffic. I was able to make it to the next off ramp and get to a mechanics shop. They hooked up a analysis computer and came back with maintenance code P2432, secondary air pumps and secondary air pump valves. Upon further research of this issue I have found out that this has been an ongoing issue with Toyota Tundra going back to 2007 models. The warranty has been extended on 2007 - 2010 models but not newer models which are still experiencing the same problem. My vehicle is considered low mileage for a 2012 with only 79,786 miles. I feel this problem constitutes a potentially dangerous safety hazard due to the drastic reduction in power which could cause an accident depending on when the parts in question fail.

- Danville, VA, USA

Secondary air injection pump and secondary air injection switching value causing check engine and trac control lights to come on. I was told by the dealer that the same piece and design was recalled on the 2011 but not the 2012 Tundra. It comes on and off but when it is on it feels like that there is a limp mode making it difficult to get up to speed on the highway. The steering feels different which I think is the traction control.

- Houston, TX, USA

Secondary air pump and control valves failing and this is a on going issue with these trucks almost $3000 to fix

- Minocqua, WI, USA

P0418 secondary air injector relay a malfunction. Check engine light is

- Stevens, PA, USA

I was pulling out of work. You must cross 3 lanes of traffic plus the center median to turn left. This is a city street. Speed limit is 45 I believe with many vehicles going faster. Vehicle had the smog air injection pumps and valves fail. This cuts power drastically to the engine and puts it into limp mode. I was forced to swerve back into and stay in the center median instead of merge into traffic as the vehicle had little power. I was able to wait for a bigger gap in traffic and limp the vehicle to the repair shop. I believe this could be deadly should it occur if trying to get on the freeway or pulling a trailer and the engine cuts power drastically. Toyota has a long history of issues with these parts failing going back to 2007 and possibly earlier. There is no need for a smog pump failure that only runs for 2 minutes on cold start to drasically cut engine power and endanger the driver and other motorists.

- Cypress, CA, USA

While driving, multiple dashboard lights came on and my truck went into "limp mode, " meaning I lost almost all power while driving in heavy traffic. Turns out this is an issue with the air injection pump, which is a known problem in Toyota Tundra. I believe this is a safety issue that Toyota needs to address.

- Willow, AK, USA

I own a 2012 Tundra with the 4.6 liter V8 engine. Very very similar or exact to other complaints on this board. Truck went into limp mode while on the highway. Took the vehicle to the dealership and had to pay to have them replace the secondary air injection pumps and valves. I agree the fix needs to be extended to all year models and engine size Tundra, not just up to 2011. Also agree that these defects could result in a fatal situation if not corrected across the board. Toyota should also reimburse those that have had to pay for the repair.

- Katy, TX, USA

I had a sudden jump in my rpms and accelerator malfunction I had to carefully guide the truck to the side of the road. After it died I could not start it. The engine light flashing, the 4lo flashing and traction's all flashing. I still had electrical but no power. I was being followed by another vehicle who almost hit me and my daughter. These trucks are supposed to be know for their life span and safety. This is not what I call safe by any means.

- Spring Creek, NV, USA

I have a 2012 Tundra with 135K and 4.6 liter. I also see several other complaints here with my same problem. My experience is that after sudden jump in my rpms from 2 to 4 and accelerator malfunctioning, I carefully and very slowly drove my truck to the dealership this morning due. I had slow/no acceleration, check engine light on and traction off. In last couple of months, have had to pull over turn it off and back on for it to go again once before. I agree that the fix needs to be extended to all year models and engine size Tundra, not just up to 2011. Also agree that these defects could result in a fatal situation if not corrected across the board.

- Conroe, TX, USA

Truck went into limp mode because of secondary air injection valve and air pump due to stuck valve. The exact same parts that Toyota has extended the warranty on for 2007 thru 2011 4.6 and 5.7 V-8's. do they wait on the. 2012 models so most will go past the 150,000 mile extension. Very disappointed since I bought this truck 3 months ago. And now they want $2800 for a 4 hour job and about $600 in parts

- Mays Landing, NJ, USA

The contact owns a 2012 Toyota Tundra. While merging into traffic at a low speed, the vehicle went into limp mode and had to be turned off and restarted. The failure occurred multiple times. The vehicle was taken to germain Toyota of naples (13315 tamiami trail N, naples, fl 34110, (888) 722-4942) where it was diagnosed that the air pump assembly and valve shaft needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 119,000.

- Naples, FL, USA

Please refer to tsb 0160-11. Toyota recognized that inferior quality parts were used as part of their emissions system and wrote this tsb as a remedy. The problem I have is that they continued to use the faulty parts beyond the 2011 model year cut-off in this tsb. My truck is throwing the same engine and emissions codes associated with this tsb. It also forces the engine into a "low power mode" greatly reducing the ability to accelerate. Lastly, it turns off traction control which affects the stability of the truck. I have filed a ticket with Toyota and from what I have read on the internet, I don't expect much help. The parts to repair this run over $1,000 alone. There are many owners having the same issue with the Tundra, sequoia and some other models (on the 4.6L, 4.7L and 5.7L engines). The engine codes usually appear on startup (when the emissions device are supposed to kick in), but the low power mode kicks in while moving.

- Carencro, LA, USA

Check engine light and trac control lights came on around 72,000 miles. Truck started to be sluggish and lose power. The truck is in a constant 'limp' mode and fails to properly accelerate. It is definitely a safety issue as it causes unsafe conditions when trying to accelerate into a traffic lane. Took it to dealer and it is an issue with the secondary air injection valves and pumps. Dealer quoted me $2184.25 to fix. Not currently covered under warranty. Toyota has addressed this issue with other years and models but for some reason has excluded the 2012 Tundra. I have contacted Toyota on multiple occasions and they refer me to NHTSA to file a complaint. Same issues reported for the 2012 Toyota Tundra reference NHTSA id numbers: 11129958 11129497 11128204 11109923 11104774 11076034 11075528 11065298 11002406 10994136 10926200 10567001 10489030 how many complaints have to be filed before Toyota corrects the issue?

- Brandon, MS, USA