Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash
full bulletin at NHTSA ↗2025 Toyota Tundra engine problems
moderate 17 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
17
Recalls
0
Avg fix
$3,100
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash
full bulletin at NHTSA ↗This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website.
full bulletin at NHTSA ↗PANT: These new Toyota Genuine MVP Air Filters are available as customer-paid replacements installed by a Toyota dealer or sold over the counter. These Toyota Genuine Parts are covered by Toyota?s Service Part Warranty for a period of 12 months, regardless of mileage, from the date of installation.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report throttle lag and hesitation as the dominant issue—pressing the accelerator produces a 1–5 second delay before power arrives, with some describing sudden surges after the lag. This happens most often pulling away from stops, merging into traffic, and turning, creating acute safety concerns in real-world driving scenarios. Multiple owners note the lag almost caused collisions or forced them to avoid traffic situations.
A smaller group reports complete engine failures: one owner states the engine seized during highway driving (bearing failure), another reports the engine "died" at 50 mph and required replacement, and a third was left stranded with total failure. One owner reports the engine stalls randomly or when turning.
Separate from these issues, owners report engine vibration at complete stops regardless of AC status, and one notes throttle response improves when switching to Sport+ mode—suggesting the issue may be tied to electronic throttle control or transmission mapping rather than mechanical engine defect.
One complaint about the advanced driving system (lane centering) is included in the intake but belongs to driver-assistance systems, not the engine itself.
Same Toyota Tundra engine reports on nearby years: 2022 · 2023 · 2024
Failure modes owners describe
Throttle lag and hesitation
1–5 second delay between accelerator input and engine response, sometimes followed by sudden surge. Occurs during acceleration from stops, merging into traffic, turning, and normal-speed driving. Multiple owners report the delay creates dangerous traffic situations.
When: Occurs immediately upon new ownership; becomes more frequent with use (one owner reports 15+ incidents since July 2025)
Symptoms owners cite: Delayed throttle response (1–5 seconds); Vehicle hesitates or does not move when accelerator pressed; Sudden surge after lag period; Loss of power sensation then quick recovery; Improves when switching to Sport+ driving mode
Repairs/costs cited: Owners at dealer for diagnostics; one reports Sport+ mode helps but no permanent fix mentioned
Engine stalling and loss of power
Vehicle randomly stalls, loses power, or cuts off while driving. One owner reports engine failure at 50 mph requiring replacement; another reports bearing failure at highway speed. Stalling occurs when turning or accelerating away from stops.
When: Occurs during normal highway driving and local traffic; one failure at 50 mph; one bearing failure at highway speed
Symptoms owners cite: Engine stalls while accelerating through intersection or turning; Complete engine loss of power requiring replacement; Engine seizes (bearing failure); Check engine light illuminates before stall; Vehicle will not restart after stall
Repairs/costs cited: One owner reports engine replacement required; one owner reports engine would not restart after bearing failure
Engine vibration at stop
Engine vibrates excessively when vehicle comes to complete stop, regardless of AC on or off status. Owner reports no explanation from dealership.
When: Occurs at complete stop
Symptoms owners cite: Excessive engine vibration at idle
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
when u press the gas the speed hesitates sometimes
When making a left turn or pulling off from stop light the truck almost stalls out. Very dangerous when traffic is coming. Need a fix ASAP. Could cost people their lives.
Engine maintenance bearing failed at highway speed. I was able to coast to the roadside because there was no other traffic. Engine would not restart.
Had engine trouble with your 2025 Toyota Tundra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2025 Toyota Tundra?
It's a documented issue but not catastrophic. 17 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Based on the 17 complaints filed, engine issues most often appear around 34,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2025/Toyota/Tundra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.