2023 TOYOTA TUNDRA Power Train Problems

Vehicle shutting down while driving (3 incidents) Diagnostic codes P0A3F21, P1CAD49, P0A3F1F, and P1C5D19 Multiple failed repair attempts Toyota's refusal to address safety defect

Recurring throttle lag. At a stoplight or stop sign at a full and complete stop I press down the accelerator and nothing happens for about a second and a half. When it finally does respond, it jumps as if it was struggling to get into gear.

My car got stuck in 4WD with 4L light blinking. I wasn't able to get out of the gear and the sensor had to be recalibrated just to fix this issue.

On my 2023 Toyota Tundra TRD Pro Hybrid at 72,241 miles, the vehicle started making a knocking noise. Engine turned off and wont start at all. Had the truck hauled to toyota dealership for service. After them having it a week, they called to let me know that the engine is completely locked up. Metal Shavings in the oil and motor wont turn over at all, even with a rachet on the crank bolt. Luckily I bought a extended warranty when i purchased the truck used as toyota is claiming only the non hybrid engines are under the toyota recall for the engines. After reading and researching they have the same engine just one doesnt have the hybrid assist on it. Toyota told me that the extended warranty company was coming today to check it out and would let me know where to go from here. They said its a...

Engine started knocking, complete loss of power and had to pull over immediately to avoid any further issues such as an accident

I am submitting this complaint to report a serious vehicle safety incident involving a sudden and complete loss of power while driving at highway speed. Vehicle Information: Make: Toyota Model: Tundra Model Year: 2023 VIN: [XXX] Incident Description: While driving at highway speed, my vehicle experienced a sudden and complete loss of power. The vehicle immediately lost propulsion, creating a dangerous situation for myself and my family. This event occurred without warning and required immediate action to safely exit traffic. Following the incident, the vehicle was taken to an authorized Toyota service facility. After inspection, the vehicle required a full engine replacement. The repair was completed, and the vehicle was returned to me. However, despite the repair, the incident has caused a lasting loss of confidence in the vehicle’s safety for highway operation. My family and I now avoid highway driving due to fear that a similar loss-of-power event could...

1-2 second period of no throttle response from a rolling stop, then a sudden lurch of acceleration many times onto a now busy intersection.

This has happened to me at least 6-7 times since owning as Jan 2024. Occasionally when stopped at stopped sign or red light, upon releasing brake and pressing gas pedal the engine will stall or stutter causing the vehicle to either hesitate to go and then launch or hesitate and not do anything. This is an issue as it has happened to me when trying to cross a divided highway and it stalling as I'm partially out in the middle of the road.

Throttle Lag: when stopped at a stop light/stop sign, there is significant delay from when the gas is depressed and the vehicle moves. This sometimes causes the vehicle to jolt forward and has almost caused accidents.

Since purchasing this truck in 2023, the engine or transmission has exhibited a severe throttle lag/hesitation when cold—a 2–4 second delay in acceleration from a stop after pressing the gas pedal, followed by a sudden lurch, which creates a safety hazard when merging into traffic. No warning lights, error messages, or other fault indicators appear. The dealer has been unable to reproduce the issue because the truck is warm by the time it's inspected, and no inspection has been performed outside the dealership.

The contact owns a 2023 Toyota Tundra. The contact stated that while driving approximately 60 MPH, the instrument cluster went black, and the vehicle started losing motive power. The contact stated that the vehicle stalled but almost immediately restarted. The contact was able to keep driving, but the vehicle failed to respond while depressing the accelerator pedal. The vehicle was taken to a local dealer for service, and the vehicle was diagnosed and it was determined that the failure was related to NHTSA Campaign Number: 25V767000 (Engine and Engine Cooling). The contact was informed that the part was not yet available for the recall repair. The vehicle was not repaired. The contact was made aware of the recall from the dealer and had not received a recall letter. Additionally, the contact stated that whenever the vehicle was shifted into reverse(R), the vehicle hesitated before jolting into gear. The vehicle had...

2023 Toyota Tundra experienced repeated engine stalling and vehicle lock-up while driving on public roads, including in an intersection. During one incident, the driver was thrown forward into the steering wheel. A Toyota dealer attempted repair by replacing the neutral/park safety switch, but the repair failed and the dangerous condition persisted immediately after. The vehicle has been removed from use due to safety concerns. The issue is consistent with known engine stalling concerns affecting certain 2022–2024 Toyota Tundra vehicles. The vehicle is unsafe to operate.

Throttle lagging, truck won’t accelerate at low speeds and is very jerky

whenever driving my vehicle, there is noticible delay/lag when attempting to accelerate. This occurs primarily from when first starting from a compelte stop, but it also noticible in other scenarios. When stopped at a stop sign or traffic light, for example, first accelerating produces a lag and delay in movement of the vehicle. The dealership has "reflashed" the transmission which seemed to rmeedy this but only for a very short time. The same issue returned quite soon after. This lag does not produce any warning or error lights or messages. Many other users on vehicle-specific forums + internate groups have all reported sumilar behavior with no permanent solution to date.

While driving under normal conditions, my 2023 Toyota Tundra TRD Pro Hybrid experienced a sudden and severe loss of propulsion. The vehicle abruptly entered fail-safe (limp) mode and would not accelerate beyond approximately 5–10 mph. This occurred without warning and created an immediate safety hazard in traffic. Multiple warning messages illuminated simultaneously, including: Hybrid System Malfunction, Check Engine, Smart Stop System Malfunction, and Advanced Ultrasonic Detection Malfunction. The hybrid system effectively shut down and the vehicle could not maintain normal road speed. I brought the vehicle to a Toyota dealership. The dealership performed only ECM and hybrid ECU software updates and cleared codes. No mechanical inspection, oil pressure analysis, particulate inspection, turbo system evaluation, hybrid motor synchronization testing, or engineering-level diagnostics were performed. Toyota Corporate subsequently stated that the software update was the “final” resolution and declined further diagnostics. I was advised to return to the dealership if the issue...

The contact owns a 2023 Toyota Tundra. The contact stated that upon depressing the accelerator pedal while at complete stop at a red traffic light or while driving at various speeds, the vehicle hesitated to accelerate as intended. No warning light was illuminated. The vehicle was taken to a local dealer, where the transmission software was reset; however, the failure reoccurred. The vehicle was not repaired. The contact stated that the vehicle was previously taken to another local dealer, where an unknown engine recall was performed. The manufacturer was made aware of the failure. The failure mileage was approximately 40,000.

Throttle lags/hesitates at times when accelerating from a stop.

Hesitation from vehicle when pressing gas coming from a rolling stop. Late response from vehicle which may increase risk of crash or injury when vehicle does not move.

When slowing down and then accelerating OR coming to a stop on an incline and then gassing it, the truck will stall for 1-2 seconds and then launch off. This has almost caused a wreck multiple times as I get stuck in the roadway for 1-2 seconds before being able to cross the lane and complete my turn. The dealership has said they've heard of the issue but could not duplicate it. No dashboard lights came on during the power failure.

When accelerating from a low speed (under 15mpg) there is significant throttle lag causing risk of accident

When trying to accelerate from coming to a stop I almost always have throttle hesitation and or lag. This had cause me to almost get into a few crashes when trying to turn left due to the truck not responding for a few seconds.

Throttle lag. Sometimes when I press on the gas after a stop the truck lags to accelerate which is dangerous and can cause an accident.

On several occasions I have a dead pedal situation on acceleration from a brief stop. When you press the accelerator, the truck does not accelerate immediately. Instead there is a second or two pause before truck responds to accelerator input. When crossing traffic, this hesitation has caused several situations in which i have almost been t-boned.

intermitantly, there is a severe power lag when accelerating from stop. When stopped (stop sign or light), and I hit the accelerator, there is no immediate power, then the vehicle will "rocket" from the stop position. This is creating a very dangerous situation, as the lag sometimes puts me in position of pulling out in front of oncoming traffic, or spins the tires and I lose control. This situation happens about 30% of the time from stop. I have not taken it in for service yet, but from researching, this is a known problem throughout the Tundra community. There are no warnings prior to this happening.

My 2023 Toyota Tundra has an intermittent issue where the throttle lags or hesitates when accelerating from a complete stop. The problem occurs unpredictably and causes the truck to fail to respond when pressing the gas pedal. The issue appears to be related to the engine or throttle response system, and the vehicle is available for inspection upon request. This malfunction puts my safety and the safety of others at risk because the hesitation can occur while turning left across traffic or merging into traffic, leaving the truck momentarily stalled in the path of oncoming vehicles. The problem has not yet been officially reproduced or confirmed by a dealer or service center, but it has happened multiple times under normal driving conditions. The vehicle has not been inspected by the manufacturer, police, or insurance representatives at this time. There were no warning lights, messages, or other indicators before or during...

The truck will hesitate for a brief second while trying to accelerate from both stop and in drive where it'll jolt you forward. This will also happen when shifting into driving and it jolts you forward. This is a huge safety risk because my truck can stall when i need the truck to go. I have brought it up to the dealership which told me multiple times as "normal". No lights has popped up but I know my other cars doesn't stall when giving gas.

Over the course of ownership I have had frequent instances of loss of power and/or lack of acceleration resulting in almost stalling out while trying to take off. This causes dangerous situations when trying to pull out into traffic because you never know when the vehicle might hesitate and crest unsafe distances between you and other moving vehicles.

Throttle Lag/Hesitation when starting from a standstill. Same also occurs when slowly going up a hill, letting off throttle and then back on throttle - engine no response and causes vehicle to roll backwards before engine/transmission catch on again. No service center has looked at this issue yet.

I experience delayed throttle response and throttle lag daily. Acceleration is unpredictable. The vehicle barely moves in some cases when pressing the gas pedal. Other times, the tires will chirp. The vehicle will sometimes hesitate so long to accelerate, that I've almost been T-boned and I've held up traffic. It seems like the truck thinks I'm going to run into something, even when there's nothing in front of me. The delay is sometimes 3-5 seconds before it will allow any acceleration. This seems like a huge safety issue, not being able to get out of the way of oncoming traffic and having such an unpredictable, and often delayed throttle response.

When from a stop vehicle does not accelerate as normal, especially while turning. Lag and hesitation is experienced for a moment and then catches causing a rapid acceleration. When turning across oncoming lanes of traffic the unexpected lag and lack of acceleration considerably increases risk of side collision from cross traffic and risk of rear collision from traffic behind due to inability to know consistent time, speed, and acceleration needed to safely cross lanes of traffic and expected acceleration speed anticipated by vehicles from rear. Concern has been brought up to dealer and properly notified. Dealer was unable to replicate. No dash warnings appeared.

I PURSHASED MY VEHICLE 4/13/24 AND ON 4/30/24 (IMPORTANT SEFETY RECALL APPEAR) I DO NOT FEEL SAFE IN THE IN MY CAR, BECAUSE OF SET RECALL ' ENGINE TO STOP WHILE DRIVING ' MY CAR IS NOT DRIVING SMOOTHLY LIKE IT SHOULD DRIVE A ''NEW CAR'' WHEN I START DRIVING THE CAR IT START TO SHAKING AND THROTTLE LAG 'LIKE THE CAR DO NOT WANT TO DRIVE' WHEN I CONTACT THE DEALER, THEY SAID " WE CALL WHEN THE REMEDY IS AVAILABLE'' MY CAR IS NOT SAFE TO DRIVE, I AM AFRAID TO DRIVE MY CAR CAUSE IT RECALL THAT IT HAS, I HAVE NOT BEEN ABLE TO ENJOY MY CAR LIKE IT SHOULD, CUASE IM AFRAID THAT I WILL GET ON AN ACCIDENT. PLEASE I NEED SOMEONE TO HELP ME, NO ONE IS DOING NOTHING IT BEEN A YEAR AND MY CAR IS GETTING WORST, AND I STILL MAKING...

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)

Vehicle losses a lot of power after being in a stop sign and trying to accelerate, there is also a ticking sound in the engine. With my fuel my car shows that there’s a full tank but in reality there is half a tank.

Hesitation when trying to accelerate. When I start my truck in the morning And hit the gas there’s a hesitation before it will move and When I come to a stop sign and hit the gas there’s always a hesitation. When the truck finally starts to move it jumps quickly forward from pressing down on the gas pedal and it’s almost caused me to rear end someone multiple times.

My 2023 Toyota Tundra motor just locked up exactly as the events discussed on the recall with the same model. Toyota stated that my truck was not affected yet here we are. Toyota opted to do a short block replacement instead of the long block as they did with the other trucks. I am concerned that I will have similar failure down the line due to residual metal in the turbo lines and or turbos that will cause turbo and or possible engine filatures later down the line. This is a safety issue because it can result in me being stranded if failure occurs aware from home. This needs to be addressed. Also my truck lurges and the gas pedal does not always respond. A serious investigation needs to be launched against Toyota, these issues can result in many Americans dying if left un checked!!

Vibration and noise in the engine and front wheel bearing

The engine began to misfire and stumble while idling. There was smoke present from the tail pipe when you would take off from the stop light. After Toyota ran an oil consumption campaign they came to the conclusion that the valve guides were bad and they need to replace both heads on the vehicle. It took 3 week for the repairs to be completed.

After braking or coming to a momentary stop, such as a stop sign, the tundra’s throttle is delayed for 2-3 seconds. Full pedal to floor, no acceleration. Extremely scary when it occurs, results in pulling out into traffic and having to wait 2-3 seconds before accelerating. It seems to be the ECM hunting for gears after slowing, hesitating, then selecting 6th gear and bottoming out before downshifting to 2nd and nearly burning out as it finally accelerates away from rapidly approaching traffic. Often happens, or is noticed more frequently, when turning right from a stop sign. Please have Toyota fix this, they are not acknowledging there is an issue!

Hesitation when trying to accelerate. When I come to a stop sign and hit the gas, there’s always a hesitation

Vehicle suffers from power failure response intermittently when attempting to accelerate. Sometimes it feels as it’s its sputtering before getting a sudden jolt of acceleration.

Truck sporadically will not accelerate from stop without significant lag when gas pedal is pressed. Happens infrequently, but typically occurs after truck is started.

There is a lag in the accelerator. It happens 10 to 20% of the time. It is a one or two second lag on the gas pedal. Pretty critical when turning out into traffic. I have al most been hit twice due to car not accelerating properly. I have taken to the dealer twice. They have told me they could not recreate when driving

Hesitation From Stop and Surge Concerns. this may cause traffic surge, collison in my front for having no control of the speed if I end up pressing the gas all the way which it cause a quick surge of speed, due to the hesitation when pressing the gas, this happened to my car for a lot of times now which I ignored it until I saw the help from the Toyota Tundra forum, that I can actually send a report to NHTSA.

The vehicle is a great vehicle. However, I have been noticing that my transmission fluid temperatures rise quickly, whether on the highway or when driving around town. I spoke to a Toyota dealership, and they told me that the proper operating temperatures for the transmission are between 167 degrees and 185 degrees. the temperatures on my transmissions have gotten past 200 degrees. I feel that it is a safety issue because if I am towing or driving long distances or in stop-and-go traffic over time, the transmission may cause a breakdown and then I will be stuck in the middle of traffic. It is a pretty big and heavy vehicle to push off the roadway, and way too expensive to allow someone to push me off of the roadway.

Consistently this vehicle experiences a hesitation to accelerate from a stop or rolling stop such as a stop sign or at a round about type intersection. When this occurs there may be up to a 2 second delay from when I press the accelerator to when the vehicle moves and once it does begin to move it will jump forward rapidly. I have had several near miss collisions upon entering round abouts when this occurs as well as at several stop sign intersections. This problem has existed from when the vehicle was at about 5,000 miles. I have reported this condition to the Toyota dealer on 2 occasions and they tell me Toyota does not recognize this is an issue and there is no fix.

Even after the recall / tcm reprogram, this truck will especially when cold and rolling away from a stop after deceleration stall / stutter for a few seconds before it starts accelerating again.

Vehicle hesitates when accelerating from a stop. Feels like the engine may stall and the vehicle will not respond to throttle inputs. Very unsafe as I may not be able to accelerate to avoid an accident.

Excessive hesitation in acceleration from stop or slow start. No warnings displayed car has less than 18000 miles. The excessive hesitation poses a real danger when pulling into traffic or trying to avoid an accident. The truck can randomly take several seconds to respond to accelerator input. This issue halls been reported my many 2022 and later Tundra owner.

When in start and stop traffic when the vehicle is at low speeds below 5 mile an hour. The transmission does not properly downshift. This causes a severe lag in acceleration when needed in traffic or in Intersections. This delay is a safety issue due to causing a lack of vehicle movement when needed. The vehicle will basically not accelerate for a couple seconds until it decides to downshift. This happens continuously at speeds below 5 mile an hour. If you don’t stop completely and pause for a second or two, the transmission will not downshift properly. In traffic, you cannot do this.

At certain times when starting (pressing the accelerator pedal) from a total stop, or from when rolling very slowly, the tuck creeps forward but there is up to a two second delay in start of increase of engine revs and power being delivered. This is quite scary when pulling out into traffic. When the power comes on it tends to surge with rapid acceleration for a very short time. To be clear, no accident has occurred and there are no warning lights on the dash. However, I feel that this vehicle behavior creates a significant hazard worth highlighting. Once the vehicle starts moving, it goes back to normal operation within seconds. It’s not a consistent issue - it does not happen very frequently - but I’ve had it since the truck was new and it has 27k miles on it now. I have made several complaints to the maker and...