What do 4L and 4H mean in a four-wheel-drive vehicle?

[MacMarley]

4L and 4H in a four-wheel-drive vehicle refer to: 4L is the four-wheel-drive low gear, with the full name being 4WD Low. 4L provides high torque and is suitable for low-speed driving. 4H is the four-wheel-drive high gear, with the full name being 4WD High. It is typically suitable for quickly passing through rain, snow, or uneven road surfaces, offering strong stability, grip, and handling. During driving, all four wheels move independently, making it a high-turning-limit transmission method on roads, allowing optimal driving force distribution to each wheel during high-speed turns. Four-wheel-drive vehicle tires have excellent traction and steering force, making them part of the active safety system.