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Toyota TSB #T-SB-0075-23
2021 Toyota 4Runner
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- TSB: Some 2021 ? 2024 model year 4Runner vehicles may exhibit a cyclic growl/groan noise from the front of the vehicle while driving in 2WD at around 30 ? 50 mph (48 ? 80 kph). The noise subsides when the vehicle is put into 4WD. This condition may be more prominent in colder temperatures. Follow the Repair Procedure in this bulletin to address this condition.
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