Electrical System Problems of Toyota Tundra - part 1

Intermittent message displaying "trailer brakes disconnected" while towing. Trailer lights continued to operate even while message was displayed. On average trailer connected and disconnected every 2-3 minutes.

See all problems of the 2019 Toyota Tundra 🔎.

The contact owns a 2025 Toyota Tundra. The contact stated that while the tailgate was closing automatically, her grandson's finger was at the upper closing point of the tailgate; however, the tailgate continued to close. The contact's husband put his body weight on the tailgate and was able to stop the tailgate from closing. There was no injury sustained. The vehicle was taken to the dealer, where the contact put her hand at the upper closing point of the tailgate while the tailgate was closing automatically, and the tailgate stopped closing as designed. The dealer informed the contact that they could not fix the tailgate failure to stop closing when a smaller hand or object was within the closing point. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 1,300.

The hood “open” sensor failed and indicated that my hood was not properly latched. The hood was latched properly. This resulted in a loud, distracting, and constant beeping that occurs anytime the vehicle is driven over 2 mph. This beeping has the potential to interfere with the driver and may result in an accident.

See all problems of the 2022 Toyota Tundra 🔎.

Keep getting the messages "trailer brake error, if towing come to a stop with manual controls" and "pre-collision system malfunction" the messages go away usually after restarting the vehicle but eventually comes back on.

Front active spoiler malfunction last week I took the vehicle into Toyota due to this malfunction message on the vehicle. The spoiler failed and remained in the down position, unknowingly causing additional damage to the spoiler flap. It was determined that the motor assembly was not working and needed to be replaced. The motor, flap and related assemblies were replaced under warranty by the dealership on 07/17/2025. Within 2 days, the spoiler was stuck in the down position again, this time without the malfunction message on the vehicle. With this being stuck in the down position, it can potentially cause more damage to the vehicle being in the down position and lead to debris in the roadway depending on the damage. Toyota manual states to avoid driving the vehicle at high speeds when this issue is present. However, owners with this issue would not know there is an issue if the vehicle is not presenting an error while functioning improperly. The vehicle is scheduled to be looked at again tomorrow 07/22/2025, at corwin Toyota of colorado springs.

The contact owned a 2024 Toyota Tundra. The contact stated while the vehicle was parked in front the detached garage, the vehicle caught on fire and the incident was caught on the neighbor's camera at 4:31 am. The neighbor then informed the contact of the incident. The contact noticed that the vehicle had caught on fire and the fire was mainly coming out of the gas pillar area. The contact stated that the entire vehicle had burned to the ground. The fire was extinguished by the fire department. A fire department report was filed. No police report was filed. There was no injury sustained. The vehicle remained at the scene and was in the process of being totaled by the insurance company. The dealer was notified of the failure and provided vehicle rental assistance. The manufacturer was notified of the failure and informed the contact that it would take up to 30 days for a field investigator to inspect the vehicle. Additionally, the contact was informed that it could take up to 45-60 days to determine whether there was liability. The failure mileage was approximately 13,900.

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I continue to get this message on my dash while driving and no one in front, on side or behind my vehicle: *foreign object speed acceleration reduced. *radio know broke a second time *windows stutter when going up or down while wet *windows rattle *poor acceleration at take off ( very dangerous on the expressway).

See all problems of the 2023 Toyota Tundra 🔎.

Whenever it rains in dfw, vehicle emits a foul/musty odor from the hvac system. Only happens when it rains. Hvac setting has always been the same, "lo" temp, ac mode on, recirculation mode on, fan speed varies. Taken vehicle to two different dealerships and techs unable to duplicate. It doesnt rain much here in TX so it is hard to get it taken care of while still within warranty. My family and I use this vehicle primarily and I am concerned for my kids' lung health as they are [xxx], [xxx], and [xxx] years old as of writing. Running out of warranty time and hate to not get this fixed and be [xxx]. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On may 20th, 2025 I was traveling in my 2022 trd pro Tundra 5. 5 hv. I was taking a left turn at a green light, when all of the sudden lights appeared on my dash saying “hybrid system malfunction, visit your dealer”. The car continued to function for approximately 1 minute, until the next light where it turned off. I tried to turn the vehicle back on, but it started to shake when it tried to start. At this point I was stuck at the light with traffic behind me, the engine had failed and the hybrid system had failed as well. I had to call 911 and request an officer to come assist, because I was blocking traffic. The vehicle had to pulled to a lot where I could unhook my boat that was in tow, and tow the truck to the beaver Toyota dealership. After arriving at the dealer and being there for over a week, I have been informed that they will be preforming a short block rebuild, because my truck is not listed in the 2022-2023 Toyota Tundra recall. Even though my truck experienced the same engine failure due to debris in the engine as all the 2022-2023 Tundras. My specific truck was not included in this recall because Toyota says the hybrid system would be able to move my car to a safe position if there was an engine failure. This was in fact not true because my hybrid system malfunction at the moment of the engine failure resulting in me stuck in the middle of the road blocking traffic having to call the police. Toyota needs to include trd pro hybrid owners in the 2022-2024 full block recall or face extensive legal action.

The truck has a very pronounced hesitation to accelerate after slowing down or coming to a stop. Example: slow down, come to a stop at a stop sign and then accelerating to start moving. This situation happens daily and almost on every occasion after slowing or stopping. It has gotten worse over time and this issue has put me and my family in very dangerous and scary situations as the truck does not accelerate promptly and oncoming traffic is getting closer. It really has made me concerned to drive my truck and feel unsafe doing so, especially with my family.

I am experiencing a recurring issue with my 2024 Toyota Tundra’s fuel gauge. Specifically, when the vehicle is parked on an incline, the fuel gauge resets to indicate a full tank, regardless of the actual fuel level. For instance, after parking on a hill with approximately half a tank, the gauge displayed full upon restarting the vehicle.

Radar system and traction control shuts off during normal operation and requires vehicle to be pulled over and turned off then back on to regain control. This causea a loss of forward collision warning, brake assistance, traction control, and lane departure assistance.

Fuel gage will randomly reset itself to full when the tank quantity is less than full or fuel gage will not reset to full after the gas tank is filled. A manual reset of the computer is required to force the gage to reset to an accurate reading. Driver is at risk of running out of fuel due to the gage overstating the quantity of fuel remaining. Numerous reports of this situation are found on youtube along with instructions on how to manually reset the software to force the gage to reset. Gage has malfunctioned 4 times in less than two months. Dealer could not find an issue with the system and requires the vehicle to be brought in during the malfunction. Issue started around 8000 miles and 22 months after initial delivery to owner.

On February 25, 2025, I took my 2023 Toyota Tundra VIN# [xxx] to stokes Toyota beaufort, SC, for its 45,000-mile service. Just 300 meters after leaving the dealership, my truck caught fire, causing significant damage and putting my safety at risk. I am sharing pictures of the incident and the warning messages I received on the dashboard. I was on my way back to the dealership when this happened. At first, the truck was shaking and losing power. I managed to make a u-turn to return to the dealership, but then the engine stalled. At that moment, I started seeing warning messages on the dashboard. I immediately called the dealership to inform them that I was experiencing issues with my truck. While still on the phone with the dealership, I noticed smoke coming from the passenger side of the hood. Moments later, flames started emerging from the hood. I quickly hung up and called 911. 1- what component or system failed or malfunctioned? I believe the engine and possibly the brakes failed (based on the dashboard warning messages). 2- how was your safety or the safety of others put at risk? within minutes, my truck burned completely. I am grateful I didn't have my children with me at the time. 3- has the problem been reproduced or confirmed by a dealer or independent service center? I received formal letters from Toyota manufacturer, Toyota distributor, and the dealership, stating that they are sorry for what happened but cannot offer any assistance with my claim. 4- has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? yes, the insurance company, fire marshal, dealership, Toyota, and engineering analysis associates (eaa) have all inspected the vehicle. 5- were there any warning lamps, messages, or other symptoms of the problem prior to the failure? yes, the truck was shaking, losing power, and eventually stopped completely, displaying warning messages on the dashboard. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C.

The fuel gauge displays full tank even though the tank is quarter empty. The local Toyota dealership is unable to resolve this issue. The fuel gauge malfunction happens almost twice a month now.

From the start, I would say after a few months of having my vehicle I had ebs issues and after that I had my vehicle shut down while I was driving and go into limp mode at it said engine reduce power or reduce engine power and it has done that four times this last time it said reduce engine power and all mercy breaking systems failed. There was a knocking in the engine, like there was no oil in it and all collision malfunction sensors breaking systems everything malfunction and vehicle shut off and engine was rattling took to Toyota and they told me that it was a manufacturing issue, but there was no recall my vehicle never even said I was low on oil even though I just had an oil change. It never gave me any alerts. It would just randomly lose power to the engine and shut down but this last time it was really bad.

Headlights go out randomly usually when using turn signal. Because this happens at night all visibility is lost temporarily. This also confuses other drivers. I haven’t taken the vehicle to the dealer because the symptom is very sporadic and difficult to duplicate. Dealerships will not fix anything unless they can witness the issue. No warning lights or messages were displayed. This problem has been documented numerous times by many different owners on Toyota Tundra forums.

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The contact owns a 2019 Toyota Tundra. The contact stated while driving at an undisclosed speed on several occasions, the vehicle stalled. There was no warning light illuminated. The vehicle failed to restart and was towed to the dealer on two occasions. The dealer diagnosed that the fuel pump had failed and needed to be replaced; however, the fuel pump part #770200c170 was on backorder. The dealer reprogrammed the fuel pump system twice as temporary repairs; however, the failure persisted. The contact stated while driving 35 mph, the vehicle stalled. There was no warning light illuminated. The contact was unable to pull over to the side of the road. The vehicle failed to restart and was towed to the residence, where it was diagnosed by a mobile mechanic. The mechanic diagnosed that that the fuel pump was burned, causing the electrical connector part #9098010844 to burn and melt. The dealer was contacted and informed the contact that the electrical connector part had been discontinued. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under the factory warranty. The failure mileage was approximately 102,000.

Driving down the highway at about 75-80 mph and my passenger side mirror camera flys off lost to the highway.

This is my 4th time filling out this form. Fuel gauge and miles to empty will reset with the fuel gauge reading full and the miles to empty recalculating without putting fuel in the vehicle. My computer owners online account shows I have a fuel level of 153%. This truck has 2781 miles on it. The fuel gauge has reset itself 6 times in that mileage. Have now contacted Toyota customer fulfillment and now have a case number for the problem. My dealer then contacted me within an hour of getting that case number. Will now hopefully being getting closer to a solution.

The gauge fails to display the correct fuel level, especially when the fuel is below a certain threshold, which raises concerns about the accuracy of the reading and the overall safety of the vehicle. It will show full when really fuel is 1/2 tank.

Fuel gauge continues to reset to full with the miles to empty resting without putting gas in the truck. First reported to dealer and looked at on 7/12/24 with no solution. Second incident reported and truck left at dealer on 7/29/24. With no solution. 2 fuel gauge resets occured and reported to dealer on10/2/24 again with no solution except Toyota knows the problem but has no fixes. Last resetting of fuel gauge has occured on 10/9/24. I have been informed that other Toyota Tundra trucks have been into this dealership with the same problem of the fuel gauge resetting without putting any fuel in the truck. This vehicle should come with a reliable and working fuel gauge. This can become a hazard if running out of fuel. Dealership has now looked at this problem 3 times! 5 resets of the fuel gauge in 2315 miles.

Fuel gauge shows full after driving 120 miles.

Camera backup guidelines stopped displaying. Automatic mirror adjustment downward when shifting into reverse stopped working. Also unable to select different camera views.

All the cameras for parking and the driving lane assist failed while raining, the screen turned all green and started glitching, next day the truck was fine and this is the 3rd time, never got in an accident.

Fuel gauge will reset itself to full without filling the tank . Has happened on 3 occasions with only 1000 miles on vehicle. Have been to dealership but the explanation from Toyota is it happens due to elevation and direction in which the vehicle is parked. Problem has occurred for me twice when vehicle was parked on a flat surface after driving and once when parked on a slight incline after being parked overnight. Gauge does not return to normal after driving vehicle as it only moves down from full level. Toyota says situation may be due to location of fuel gauge sending unit in fuel tank. Dealership had vehicle for 3 days and replicated the situation. At this time I guess I will have to track road mileage to determine when to get gas and not rely on the fuel gauge. The dealership has been great, but has to rely on what solutions that corporate Toyota will supply them. Will continue to monitor the situation.

Fuel gauge randomly resets to full; true remaining fuel amount unknown unless vehicle is stopped and electronically reset. This is the second occurrence.

I have a 2022 Tundra that I purchased new. My current mileage is 18,500 and although my truck is part of the engine replacement recall that is not what I am complaining about, what I am complaining about is my front passenger window got stuck halfway open/closed and it's been sitting at the dealership for 2 weeks with no parts available to fix it (the cable snapped and motor burned out). They did put me in a rental (tacoma) but they have no idea when the parts will be available to fix my window! this is my 4th Tundra and never had an issue like this with any of my others. I've already called Toyota and they have no idea when parts will be available either. They also said they have no parts to fix the temporary fuel line recall which has been out for almost 1 year.

The tailgate opens on its own while I am traveling down the highway. I now have to brace anything I put in the bed of the truck lest the tailgate opens on the highway and I spill my load and cause a catastrophic injury or death on the highway. When shifting into park, having to keep my brakes firmly engaged due to a periodic and rapid acceleration of the engine. At cruising speed, on the highway, a vibration that only occurs when climbing hills coupled with a rapid pulsing of the engine/transmission. At cruising speed, on a level ground, the transmission rapidly disengages and reengages. Weekly I have gauge and infotainment malfunctions wherein I have to turn off the truck and restart it to make the gauges work. The gauges just freeze and fail to respond. The compass flips direction. Malfunctioning gas gauge. The backdoors lock and will not unlock. Occasionally, when they lock, I have to crawl into the backseat, from the from seat and manually unlock the door from the inside of the truck. A flat tire where when I went to change it, the jack bent…in my driveway. I now have to carry a 3rd-party jack and tools to handle emergency repairs. A regular malfunction of the rearview mirror. A cracked drivers seat. 6-months after purchasing the truck, the door trim came off in my hand. When I spoke to the Toyota tech, he advised me that this was not covered under warranty, and suggested that some customers keep the trim off as “most of the trim was installed with double-sided tape and would just fail again”. Though, to be fair, he did offer to, at several hundred dollars a pop, keep replacing the trim every couple of months. While my truck is parked in the garage, when the trucks system does an update, it opens my garage door.

Radio knob broke and radio audio became stuck at a loud status making it difficult to hear any first responder vehicles or concentrate/navigate through daily traffic. Please reference this thread for there are several Tundra owners dealing with this malfunction [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Fuel gauge automatically resets to full giving a false reading. Unknown fuel level creates travel hazard, because vehicle can shutdown during travel.

The digital instrument cluster continues to have freezing issues as well as blacking out while driving. From our previous experiences, this is more than likely due to software. There was a safety recall (23ta02) that was suppose to address some of these issues, but they continue to exist and happen. Not to mention that the fuel level will reset to full even though the vehicle has been driven for most, if not all, of the usable fuel. This continues to happen on 2024 model year vehicles.

Parking camera stopped showing backup lines. All other cameras suddenly stopped working.

This case results from the malfunctioning trailer brake ecu on 2018-2019 Tundras. There is a Toyota service bulletin t-sb-0036-19, which specifies an updated controller to replace the defective model. Part # : original 89547-0c020 update/replacement 89547-0c060 Toyota will not replace this defective part outside of the original warranty period despite the issuance of an updated replacement part. The service bulletin wasn’t even issued until 4/19 possibly giving no recourse to owners whose warranty had tolled. The newer part number, suggests this was a dangerous defect that was upgraded. A review of this matter online details this problem has frequently occurred. The reason it’s not more commonly reported is that a minority of Tundra owners tow trailers, and even fewer tow with electric brakes. Regardless, this is a significant safety issue where the Tundra owners are forced pay about $1,100 to repair this defective part. This matter should be elevated to a recall since losing the functionality of one’s trailer brakes is a very dangerous situation.

See all problems of the 2018 Toyota Tundra 🔎.

The transmission seems to be confused on which gear to select and hesitates to get the truck moving. It's happened to me at an intersection a few times and my car will inch forward but lags to accelerate, and vehicles behind me have been close to rear ending me. This is very reproducible in the mornings, it's very apparent or when the truck has been sitting off for a long period of time. After driving for a while it no longer happens. Every morning though this issue is apparent.