This service bulletin addresses a cyclical groaning or grinding noise from the front differential in 2WD mode, not present during 4WD operation, in 2016-2019 model year 4Runner 4WD vehicles.
Applicability
This bulletin applies to vehicles produced before a specific VIN, listed in the production change effective VIN section.
Warranty Information
This repair is covered under the Toyota Powertrain Warranty for 60 months or 60,000 miles, whichever occurs first, from the vehicle’s in-service date.
Only one of the required Techstream units is necessary, with software version 13.30.018 or later.
The repair procedure involves confirming the condition, removing and replacing the front differential, and test-driving the vehicle to confirm the noise is no longer present.
Manual:
Download: 2019 Toyota 4Runner Front Differential Cyclical Groaning/Grinding Noise Service Manual
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