3rd Gen Tundra: Knock from the engine, rough running, stall or no-start (main bearing recall)

Checks, in order

1. Run the VIN
   nhtsa.gov/recalls or a Toyota dealer shows which campaign your truck is in and whether the work is done. Toyota revised the bearing from July 2024 production, but 26V320 still covers 2024 trucks built through early August.
   easy $ · under about $50
2. Listen and look
   A deep knock at idle that gets louder under load, an oil pressure warning, or glitter on the dipstick or in the filter are the signs. Cold-start rattle that fades in seconds is more likely the wastegate or an exhaust shield; see those symptoms.
   easy $ · under about $50
3. What the dealer does
   Under 24V381 the engine is replaced. Under 25V767 and 26V320 the dealer inspects the number one bearing using Toyota's software and drive data and replaces the engine only if needed. Keep oil change records; they are not a condition of the recall but matter if coverage is disputed for a truck just outside a VIN range.
   hard $ · under about $50
4. Outside the campaigns
   A 2022–2024 truck with a knock that a dealer says is not covered deserves a second dealer and a call to Toyota's customer line with the VIN and build date. Owners near the edges of the build windows have reported disputes.
   easy $ · under about $50

Applies to: 3rd generation Tundra, 2022 on, with the 3.4L twin-turbo V35A-FTS V6 and the 10-speed automatic, including the i-FORCE MAX hybrid. Most items are covered by Toyota's 3 year/36,000 mile basic and 5 year/60,000 mile powertrain warranties or by an open recall, so the first check on this truck is usually a VIN lookup.

Tools and parts for these checks

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Go deeper

• Toyota Tundra V35A Engine Recall Explained (2022–2024 Tundra, LX, GX)

Other engine problems on the 3rd Gen Tundra

• "Reduced engine power" warning with P0243 or P0247, or a rattle from the turbos at idle
• Tinny rattle under the truck on cold starts or at a certain rpm

More 3rd Gen Tundra problems

• Pop or clunk under the truck on the first start of the day, hesitation coming to a stop, harsh 1–2 shift (Transmission)
• "Hybrid system malfunction" or "12V battery charging system malfunction" message (i-FORCE MAX) (Hybrid System)
• Rear camera image missing or wrong, blank instrument cluster, or the multimedia screen reboots (Body & Electrical)
• Vibration or clunk from the rear, gear oil on a rear wheel, or a loose rear axle (2022 recall) (Drivetrain)
• Fuel smell, brake line chafe, or reverse lights with moisture inside (open recalls) (Body & Electrical)

All 8 3rd Gen Tundra symptoms in the interactive troubleshooter →

General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.