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2022 Tundra Limited - Turbo wastegate rattle at low speeds and cold start

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Mike T. · rep 0 · May 25, 1:30 AM · 1 replies · solved · Question

Vehicle: 2022 Toyota Tundra Limited

Hey Tundra crew,

I've got a 2022 Toyota Tundra Limited with the i-Force MAX engine, and I've started noticing a distinct rattling noise, especially when accelerating lightly at low speeds or sometimes right after a cold start. It sounds like it's coming from the engine bay, almost like a loose heat shield or something metallic vibrating.

I've done some digging online, and it seems like there might be a known issue with the turbo wastegates on these new Tundras. My truck has about 25,000 miles on it, and it's still under warranty. The noise isn't constant, but it's definitely there and getting more noticeable.

Has anyone else experienced this with their 2022+ Tundra? What was the diagnosis, and how did Toyota address it? Is this something I should be concerned about long-term, or is it more of an annoyance? Any advice would be great before I head to the dealer.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:30 AM

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ClearTheCode admin answer:

The rattling noise you're hearing from your 2022 Toyota Tundra Limited's i-Force MAX engine, particularly at low speeds or during cold starts, is a recognized concern that many owners have reported. This sound is often attributed to the turbocharger wastegate actuators or related components.

Common Causes:

  1. Wastegate Actuator Rod Play: The wastegate actuator controls the exhaust gas flow to the turbocharger. Over time, or due to manufacturing tolerances, there can be slight play or looseness in the rod connecting the actuator to the wastegate flap. This play can cause a rattling sound, especially when the actuator is not under full tension (e.g., at low boost or idle).
  2. Wastegate Flap Wear: Less commonly, the wastegate flap itself or its pivot points within the turbocharger housing can develop wear, leading to a rattle.
  3. Heat Shield Vibration: While you mentioned this, it's always worth double-checking. Loose heat shields around the exhaust or turbo area can produce similar metallic rattling sounds.
  4. Exhaust Components: Other exhaust system components, such as hangers or catalytic converter shields, could also be a source of vibration.

What to do:

  1. Document the Sound: Try to record the sound if possible, noting the conditions under which it occurs (cold start, specific RPM range, light acceleration). This will be invaluable for the dealership technician.
  2. Check for TSBs: Toyota has issued Technical Service Bulletins (TSBs) for various noises and issues on the new Tundra platform. Your dealership can check if there's a specific TSB related to wastegate rattles or similar engine noises for your VIN.
  3. Visual Inspection: While difficult without lifting the truck, a quick visual inspection for obviously loose heat shields or exhaust components might be possible.

When to see a shop:

Given your truck is a 2022 model with 25,000 miles, it is still well within its factory warranty period. You should schedule an appointment with your Toyota dealership as soon as possible. Explain the symptoms clearly and provide any recordings you have. This issue, while often an annoyance, can sometimes indicate premature wear on turbocharger components. Addressing it under warranty is crucial. The dealership will likely inspect the turbochargers, wastegate actuators, and potentially perform a diagnostic to ensure there are no underlying performance issues, though a wastegate rattle itself typically does not trigger OBD-II codes unless it leads to a performance fault.

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