The AUTO LSD system aids traction by using the traction
control
system to control engine performance and braking when
one of the drive wheels begins to spin.
The system should be used only when one of the drive wheels spinning occurs in a ditch or rough surface. System operation The system can be used on 2WD models and in 2WD mode on 4WD models. The system is activated when driving at a speed under 62 mph (100 km/h). The AUTO LSD system will be activated with the following two procedures. Press the briefly to turn on the system. The "AUTO LSD" indicator will come on. To turn off the system, press again. Stop the vehicle completely, and press for more than 3 seconds. The "AUTO LSD" and VSC off indicators will come on. To turn off the system, press again. ■If the brake system overheats The system will cease operation and a buzzer will alert the driver. At this time, the "TRAC OFF" indicator will come on. Stop the vehicle in a safe place. (There is no problem with continuing normal driving.) The system will be automatically restored after a short time.
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Toyota Tundra Service Manual > A760e Automatic Transmission / Transaxle: Torque Converter Clutch And Drive Plate
InspectionINSPECTION PROCEDURE 1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY (a) Inspect the 1-way clutch. (1) Install SST to the inner race of the 1-way clutch. SST: 09350-32014 09351-32020 (2) Press on the serrations of the stator with a finger and rotate it. Check that the stator rotates smoothly ...