Toyota TSB #T-SB-0012-19
2017 Toyota 4Runner
Affected Component: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
- TSB: Some 2016 ? 2019 model year 4Runner 4WD vehicles may exhibit a cyclical groaning or grinding noise from the front differential in 2WD that is not present during 4WD operation. Follow the Repair Procedure in this bulletin to address this condition.