general problems of the 2012 Toyota Tundra - part 1

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.

The contact owns a 2012 Toyota Tundra. The contact stated that while plowing his driveway, there was an abnormal burning odor detected. The vehicle suddenly lost power. There were no warning lights illuminated. The vehicle was towed to the local dealer where it was diagnosed and determined that oil was needed. The mechanic became aware that oil was dripping through a small crack on the cam shaft on the right cylinder bank onto the exhaust manifold. The contact was informed that the engine wiring harness was burned. The mechanic recommended that the engine and transfer case be replaced. The vehicle was not repaired. The manufacturer was contacted, and the contact was informed after an investigation, that there was no evidence of a defect. The claim was denied. There was no additional assistance provided. The approximate failure mileage 175,000.

The contact owns a 2012 Toyota Tundra. The contact stated when starting the vehicle the "check engine" light was illuminated. The contact stated that the light stayed illuminated at all speeds. The contact had taken the vehicle to an independent certified mechanic where it was diagnosed and determined that the secondary air injectors needed to be replaced. The mechanic advised that the manufacturer had offered and extended warranty program to cover the failure under "warranty enhancement program zg6" for "air injection pumps and air switching valves" and that the warranty had expired several months ago. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 98,000.

Computer software issues. Flex full engine.

Secondary air injection pump has high rate of failure, recalls in older models. Has caused truck to go into limp mode. Could cause serious accident/fatality if vehicle suddenly goes into limp mode on highway. This has happened on multiple occasions in forums I’ve read. Known problem by Toyota that isn’t being addressed.

The engine leaks oil in front of the faulty designed cam tower seal and leaks on the manifold. This caused smoke to come from the oil burning off.

Check engine light which when checked revealed air pump and air control valve failures. This is a known problem with 2006-2011 Tundras that Toyota issued an extended warranty for 10 years or 150,000 to replace these parts. There was additional extended warranty for 2012 with 5. 7 liter engine but not the 4. 6 liter engine. Safety issue is when total failure occurs vehicle goes into limp mode with max speed of 25mph which would be bad at highway speeds. Code was run by repair facility and copy is enclosed. Email was sent to Toyota corporate and upon phone call follow up, Toyota refused to do anything towards the defect.

The contact owns a 2012 Toyota Tundra. The contact stated while driving 25 mph, he heard an abnormal sound, and the check engine warning light illuminated. The contact drove to his residence. The contact took the vehicle to the local dealer, where it was diagnosed with needing the secondary air injection system to be replaced. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was 95,899.

After filling up with gas and pulling onto highway there was no power like truck was in limp mode and tractor trailor had to swerve off of road to prevent severe accident. The secondary air injection has a severe mal function which Toyota only recognized in earlier models and they extended warranty to 10 year and 150,000 miles. This is a severe problem I wish someone would investigate before it's too late and lives are lost. There is not much response time to make a quick decision during this moment. Thank you.

�12 Toyota Tundra appears to go into limp mode, brought it to the dealer ship, a recall was listed for something, didn't fix the issue. Had to have about $1,500of work done. Fixed the issue. . . . For 1. 5 months. Back at the dealership again, throwing all the same codes for all the same parts. Clearly the parts being used aren't a fix to the problem, and seems like more than just is are having the same issue. At this point it's playing with peoples lives. Toyota dealt with this with earlier models but anything 2012 and up , nothing is being done. Someone is going to get killed if these trucks go into limp mode on a highway and they get hit at 70-80 miles an hour from something out of the drivers control, that Toyota knows about. When will a recall condo this, something needs to be done.

My 2012 Tundra with 107k displayed the check engine, 4lo, and traction control warning lights and would only drive in 'limp mode'. Luckily this happened at startup when I was leaving work one afternoon, and not as I was driving at highway speed. I 'limped' to the local dealer using back roads and left the truck for diagnosis. I was notified that the truck was exhibiting code 'p2440' for a faulty secondary air injection system valve, and that both secondary air pumps and valves would need to be replaced to correct the issue. The repair would cost $2500, but "luckily" the dealer had the parts in stock because this was a common problem. Since I needed the truck to get back and forth to work each day, and I am not ready to replace it, I authorized the repair and picked it up the next day. Subsequent research on-line showed that this has been a known issue for years. Toyota extended the warranty on these parts for my 2007-2011, and later for certain 2012 vehicles as well. Unfortunately, it appears that only the 2012s with the 5. 7l engine are covered (mine is a 4. 6l). From my research, it seems that the pumps/valves in my truck are the exact same parts that are known to fail (and are covered) in other model years. I called Toyota customer service, and of course they advised that they would 'log' the issue and contact me should the warranty be extended to cover my truck. Judging by the number of complaints here, I feel that it warrants an investigation and perhaps applying some 'external' pressure to persuade Toyota to do the right thing and cover all of the affected vehicles. Not only is this an emissions issue, but could be a serious safety issue if the truck were to go into limp mode while driving.

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.

Leaky Tundra cam tower seal. Toyota claims that they uses a epoxy type seal that has been found to leak, and needed to be replaced with different type of gasket seal. . The charge for this approximately $ 5000. 00 that they say is the consumers responsibility.

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.

Tl- the contact owns a 2012 Toyota Tundra. The contact stated that the vehicle was at stand still, when starting the ignition it hesitate and then start. The contact stated no warning light was illuminated. The contact stated he replaced the battery but continues to experience the failure. The vehicle was taken to independent mechanic and had the starter and alternator inspected. The vehicle was not diagnosed or repaired as of yet. A dealer was not contacted. The vehicle continue to experience the failure. The manufacturer had not been informed of failure. The failure mileage was 86,000. Dp.

2012 Tundra 4. 6 v8 my truck will go into limp mode and the 4lo light flashes, check engine, and trac off lights were all on. Almost complete lose of power will happen. In traffic I end up blocking ever vehicle behind me, because the truck will not reach the speed limit. If there is a hill then the truck barely moves going up the hill. After looking online I saw it's a pretty common problem on Toyota with the secondary air injection pump seizing. I checked it with the code reader at a local shop and the guy confirmed it, code p2240 "air injection switching valve stuck open bank 1. " he told me he used to work for Toyota and knew there was the extended repair on this issue but couldn't recall the specifics. I went into Toyota and unfortunately they will not cover it for my truck after they ran my VIN number. It seems like a lot of Tundras with the 5. 7l motor are covered but the 4. 6l motors are not. I was informed by Toyota that in the future it might be covered.

Secondary air injection system failed may 2019. All dash warning lights came on. Researched on-line and found truck would not have accelerated past “limp mode” (25-30 mph). Had to have vehicle towed to local Toyota dealer as I was over 40 miles from home (all highway). Toyota dealer diagnosed secondary air injection system failure. Cost to repair over $3000. Toyota has acknowledged this is a known design problem on the Tundra “big” v8s but refuses to recognize this is a design problem on the 2012 4. 6l v8 models. Local dealer stated “we have lots of these lying around the shop so no problem getting the part. ” indicating this is a common problem/repair. Spoke directly with Toyota corporate office who refused to acknowledge design fault or reimburse for repair. This is a huge safety issue caused by a known Toyota design problem that needs to be investigated by NHTSA. Toyota must be help accountable for this problem and made to correct the problem with a "recall".

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.

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 Tundras. I believe this is a safety issue that Toyota needs to address.

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 Tundras, 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.

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.

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.

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.

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

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.

I see several other complaints here with my exact problem. The secondary air injection system relay and secondary air injection system switching valve. Obd ii codes p0418 and p2442. My experience is the same as other complaints in that my truck is now permanently in limp mode and cannot be driven due to these known defective parts. On pre-2012 model Tundras Toyota has extended the repair warranty to 10 years/150,000 miles as this is a widespread problem. For some reason they will not include later year model trucks like my 2012 4. 6 liter. This is a safety issue as the truck slowed severely in traffic and will not accelerate or go up any hill. Cars behind me in traffic had to swerve around me. I was stuck dead at the bottom of a hill as these chronically failing parts shut down the vehicle's power. Toyota customer care has denied my attempt to seek compensation or repair of these parts that they know are defective. The fix needs to be extended to all year model and engine size Tundras as these defective parts exist on models past 2011. A side note, somehow these defects are reported to be affecting the vehicle skid control as that warning light comes on when these parts fail on most of the affected Tundras.

Secondary air injection system failed June 2018. Vehicle went into limp mode on highway, a dangerous situation as you go from 70 to 30 mph rather suddenly. Alamo Toyota dealership in san antonio stated code po418 and needs to have air pumps and valves replaced. Cost estimate of $3362. 57. Toyota has acknowledged this is a design problem on certain Toyota Tundras but fails to recognize this is an issue on the 2012 4. 6l v8 models. Toyota needs to take responsibility that this is still an issue with the 2012 4. 6l v8 models.

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.

Tl 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.

Monday, January 15th I drove at 65 mph to work at and home on the freeway with no problems. Tuesday and Wednesday the truck was stationary due to cold weather conditions in houston, texas. Thursday morning the 18th, I drove at 65 mph to work via freeway with no problems. After lunch I drove at 45 mph back to work on a street and noticed the check engine and traction light came on and simultaneously the truck then starting driving extremely sluggish and and far below the speed limit obstructing the flow of traffic. I carefully got over and drove the truck only allowed at 30 mph back to the office. After carefully driving home via street at the end of the day I got home and removed the negative wire from battery and re-connected it to see if this would resolve the issue. After doing so, the results were the lights in the dash were now off and the truck drove proper with no hindrance. This would last until Wednesday 24th. Both lights came back on and the truck started again driving sluggishly. Its seem that when the light is off the truck drives fine, but when it is triggered the truck is drives extremely sluggish. Could the be a defective part? any help would be useful.

Air injection relay and pump failure. This has been an extended warranty item on all trucks except the model I have with the same parts as the larger engine truck. This is a corporate game of not enough complaints on a less popular model engine even though the parts are the same as what is being replaced on same year models with the larger engine. Repair is estimated at $2600.

Air injection relay and pump failure. This condition eventually leads to "limp" mode causing traffic safety issues. This has been a manufacturer recall/extended warranty item on all Tundra trucks, up to and including some 2012 models but not all of the 2012's. By the numbers of failures present, it's obvious that what ever design changes Toyota did to say they fixed the issue and exclude some of the 2012's were insufficient. This recall/extended warranty should include all 2012 models. Toyota/dealers claim the pumps are part of emissions so they are not covered under the manufacturers warranties. Repair cost was quoted at $3800. Other filed complaints: NHTSA id number: 11075528 NHTSA id number: 11002406 NHTSA id number: 10994136.

2012 Toyota Tundra cam carrier seal/cam tower leak on passenger side.

The contact owns a 2012 Toyota Tundra. While driving approximately 45 mph, the check engine warning indicator illuminated. The vehicle was taken to an independent mechanic who diagnosed that the air injection pump and switching valve needed to be replaced. The vehicle was not repaired. The manufacturer was notified and informed the contact that the VIN was not included in a manufacturer recall. The approximate failure mileage was 78,000.

After starting the engine, the engine raised past red line rpm for several seconds. After slowing, I started to back out drive when engine raised again into red line rpm. Before I got it pulled back into drive, it raised 3 more times. Each time I managed to get to neutral.