The following three video clips explain the uses, function, operation and theory of all of the 2014 Toyota 4WD systems. It starts at a very basic level and is a great primer for people new to 4x4 vehicles. The videos also demonstrate the advanced functions and impressive technology used in Toyota vehicles 4x4 systems.

Part 1

Basic overview
Full time vs Part time 4wd systems
Torque and traction
Transfer cases
4wd mode selection
High/low range
Differentials
open
limited slip
locking
electronic limited slip (ALS)
Hill assist (HAC)
Downhill assist (DAC)
Crawl control
Multi-terrain ABS





Part 2

Electronic control rear differential
Multi terrain select
KDSS
Shifting “on the fly”
Drive-train binding
Operation speeds
3 types of “fulltime 4wd”
Center differential
Locking center differential
Torsen differentials
Multi mode 4wd
Full time AWD
Electronic on-demand 4wd systems
Electromagnetic couplers



Part 3

4wd ECU
Dynamic AWD systems
Electromagnetic couplers
Electromotor generators
Rear differential motors



DICLAIMER: the video clips are compilations of animations used in training of Toyota employees and representatives. The original content (animations) are property of Toyota Motor Company. The clips are compiled for informational purposes and the enjoyment of Toyota off-road enthusiast. Any other use of the source material should be done with the authorization of Toyota.

Nice post, I keep a few .pdf files on training and such for various 4WD systems Toyota uses to help people on the forum sometimes.

Was trying to figure something out and came across this old post, very helpful!

This is awesome thanks for sharing!