Is High-Speed Four-Wheel Drive H or L?

[AlanaDella]

High-speed four-wheel drive is 4H. Here are the relevant details: 1. Definition: 4L stands for low-speed four-wheel drive. The transfer case has a larger gear ratio, which can amplify torque, reduce speed, and increase power. It is suitable for extremely harsh road conditions. 4H stands for high-speed four-wheel drive, where the transfer case has a smaller gear ratio, allowing driving at relatively higher speeds, but with less guaranteed power. It is suitable for general mild off-road conditions. 2. Precautions: It is not recommended to use 4L on icy, muddy, or desert terrains; instead, use 4H. The reason is that on low-traction surfaces during startup, the torque amplified by 4L can be too large, causing the tires to spin and slip instantly, making it difficult to start. Switching between two-wheel drive (2H) and all-wheel drive (4H) can be done while the vehicle is moving, but only within a certain speed range.