What do 4L and 4H mean in 4WD vehicles?
2 Answers
4H and 4L are two modes available in four-wheel-drive vehicles. 4H stands for four-wheel-drive high-speed mode, while 4L stands for four-wheel-drive low-speed mode. These two drive modes have certain differences in controlling the transmission and are used in different scenarios. Properly utilizing the four-wheel-drive modes according to terrain can not only improve the vehicle's off-road capability but also reduce fuel consumption to some extent. Usage scenarios for 4H and 4L modes: 1. Slippery surfaces: If driving on snow or slippery roads, the 4H mode is very suitable, as it ensures sufficient drive wheels while avoiding excessive driving force that could cause wheel slip. 2. Climbing: Due to its strong driving force, the 4L mode can be used when climbing slopes or during off-road driving, maximizing the vehicle's power. 3. High-speed driving: High-speed four-wheel drive is not suitable for highway driving. For part-time four-wheel-drive vehicles, dry paved roads are not suitable for 4H or 4L modes; only the 2H mode should be selected.
Hey, I was also confused about the 4L and 4H modes in 4WD vehicles when I first started driving. Later, I learned that 4L stands for low-range four-wheel drive, which provides massive wheel torque—perfect for climbing steep slopes or getting unstuck from mud. It’s slow but powerful, helping you out of tough spots. 4H, on the other hand, is high-range four-wheel drive, ideal for everyday driving, like boosting traction on rainy or snowy roads to prevent slipping. You can drive faster in this mode, but avoid using it long-term to save fuel. Remember, never engage 4L on dry pavement—it forces the wheels to turn rigidly, damaging the vehicle and posing risks. Always shift modes while stopped in neutral. Make it a habit to switch back to 2WD in non-off-road conditions to save fuel.
