Full-Time or Part-Time 4WD: Which Toyota System Performs Better Off-Road?

Toyota Land Cruisers and 4Runners utilize different four-wheel-drive systems. This video breaks down the mechanical differences between full-time and part-time configurations, explaining how each functions and which might be superior for your needs.

The Toyota Land Cruiser is equipped with a full-time 4WD system, whereas most Toyota 4Runners—and by extension, Tacomas—feature a part-time 4WD system. Understanding the distinction requires looking at the transfer case, the mechanism responsible for distributing power.

The video explores the technical operation of these systems, including how a Torsen center differential functions and how a full-time system achieves a 40/60 torque split. It also examines the mechanics of low-range gear selection and the process by which part-time systems engage 4WD.

Source: Toyota 4Runner vs Land Cruiser - Which 4WD System Is Best?