What do 4H and 4L mean in cars?

1 Answers
LeilaniMarie
07/30/25 4:24am
4L stands for four-wheel drive low gear mode, which provides high torque for tackling complex road conditions such as climbing slopes or off-roading. 4H stands for four-wheel drive full gear mode, used for normal driving with powerful performance and top-notch handling, but it consumes more fuel than 2H mode. Below is more information about 4H and 4L in cars: 1. 4H and 4L are two modes available in four-wheel drive vehicles. 4H is the four-wheel drive high-speed mode, while 4L is the four-wheel drive low-speed mode. These two drive modes differ in terms of transmission control and are used in different scenarios. Properly utilizing the four-wheel drive mode based on terrain can not only improve the vehicle's off-road capability but also reduce fuel consumption to some extent. 2. The 4H mode is ideal for driving on snowy or slippery roads, as it ensures sufficient drive wheels while avoiding excessive driving force that could cause wheel slippage. The 4L mode, with its high driving force, is not suitable for such conditions but can be used when climbing steep slopes or off-roading to maximize the vehicle's power. 3. High-speed four-wheel drive (4H) is not suitable for highway driving. For part-time four-wheel drive vehicles, dry paved roads are not appropriate for 4H or 4L modes; only 2H mode should be selected. 4. The full name of 4H is 4WD-HIGH, where the gear ratio in the transfer case is smaller, allowing the vehicle to maintain high-speed movement. The full name of 4L is 4WD-LOW, where the gear ratio in the transfer case is larger, maximizing torque but limiting speed. This mode is typically used for extremely harsh road conditions.
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