Debris in Engine May Cause Stall

Affected vehicles (1)

Component / system

Defect

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2024 Tundra vehicles equipped with a V35A engine. Debris from the manufacturing process may contaminate the engine and cause a main bearing to fail, which can result in an engine stall and loss of drive power.

Risk / consequence

A loss of drive power increases the risk of a crash.

Remedy

The remedy is currently under development. Once the repair is available, repairs will be performed free of charge. Owner notification letters are expected to be mailed July 6, 2026. Owners may contact Toyota's customer service at 1-800-331-4331. Toyota's numbers for this recall are 25TB14 and 25TA14. This recall expands previous NHTSA recall numbers 24V381 and 25V767.

Chronology of events

1. November 2025

   November 2025 – February 2026 When filing recall 25V-767 in November 2025, Toyota continued to investigate certain vehicles with certain V35A engines produced at the Alabama manufacturing plant (TMMAL) with improved manufacturing processes and other changes built after those involved in that recall. Toyota investigated the effects of one of these changes, a cam housing clearance change, on bearing pressure and, together with the supplier, also studied the progression of bearing wear from engines in the field. To do this, both non-failed engines and engines with alleged #1 main bearing failure were collected, torn down, and had the bearing sent to the supplier for analysis. Concerning the study of the cam housing clearance change, in February 2026 it was found that there was a stack up of bearing pressure based on variables that included timing chain tension and engine loading scenarios, but this pressure stack up could not differentiate those engines produced during the period under study from the engines previously recalled.

2. March 2026

   March 2026 – May 2026 In addition to collecting, tearing down, and analyzing bearings from engines in the field, Toyota and the supplier performed bench testing on #1 main bearings without wear from the period under study. The bench testing applied a specified pressure to the bearing to simulate engine loading as debris of a specific shape and size that were representative of debris found in engines produced during the period under study were introduced onto the bearing in increasing quantities. In late April 2026, Toyota and the supplier completed the bench testing and determined that, if a piece of debris of sufficient size is introduced onto the bearing, introducing additional pieces was not a significant factor on the fatigue strength of the bearings produced during the period under study. In early May 2026, Toyota and the supplier completed the engine collection, teardown, and analysis of the #1 main bearings from the field. The results of the bearing analysis showed that bearings produced during the period under study contained the same wear pattern that was observed on bearings produced during the periods covered by recalls 24V-381 and 25V-767.

3. May 14, 2026

   May 14, 2026 Based on the results of the above investigation, Toyota determined that, during a specific production period after the 24V-381 and 25V-767 recalls but before implementation of certain improvement to the #1 main bearing, there is a possibility that engine machining debris of a particular size and amount may not have been cleared from the engine during manufacturing and can cause the issue described in Section 5 to occur. Thus, Toyota has decided to conduct a voluntary safety recall campaign for the above-described vehicle production period. As of May 13, 2026, based on a diligent review of records, Toyota’s best engineering judgement is that there are 30 Toyota Field Technical Reports and 360 warranty claims on the engines in the subject vehicles that have been received from U.S. sources that relate or may relate to this condition and which were considered in the decision to submit this report.

Notification schedule

Dealer notification

May 20, 2026 - May 20, 2026 No Dealers

Owner notification

Jul 06, 2026 - Jul 20, 2026 Phased Recall