Toyota 4WD Has a Glitch

Some 2003-2012 Toyota 4Runner, 2007-2012 FJ Cruiser and 2005-2012 Tacoma vehicles equipped with part-time 4WD may exhibit a flashing 4WD indicator light and inoperative 4WD system. Look to the A.D.D. (automatic disconnecting differential) shift actuator.

Information courtesy of Mitchell 1

Mike Mavrigian

May 9, 2022

Some 2003-2012 Toyota 4Runner, 2007-2012 FJ Cruiser and 2005-2012 Tacoma vehicles equipped with part-time 4WD may exhibit a flashing 4WD indicator light and inoperative 4WD system.

The A.D.D. (automatic disconnecting differential) shift actuator is inoperative. Replace the A.D.D. actuator with P/N 41400-35032 (this replaces the original actuator 41400-35030 or 41400-35031).

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.