Checks, in order
- Find it with the engine runningHave a helper hold the rpm where it rattles while you (safely) reach under and press on each heat shield. The noise stops when you touch the right one.easy $ · under about $50
- FixA large stainless hose clamp around the shield, or a dealer tack weld, ends it. Dealers will do it under the basic warranty.easy $ · under about $50
- If it is not a shieldA rattle from the top of the engine at idle is the wastegate symptom; a knock that gets louder with load is the main bearing recall. Neither should be ignored.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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| ITEM | USED FOR | BUY |
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Other engine problems on the 3rd Gen Tundra
- Knock from the engine, rough running, stall or no-start (main bearing recall)
- "Reduced engine power" warning with P0243 or P0247, or a rattle from the turbos at idle
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.