Low range is a low-speed, high-torque transfer-case ratio used for difficult off-road situations rather than normal road driving.
When should low range be used?
Typical uses include slow rock crawling, steep climbs, controlled descents, deep ruts, recovery manoeuvres and situations where precise wheel control matters more than speed. Sand can require either high or low range depending on vehicle, terrain and momentum.
Why low range increases wheel torque
The extra gear reduction multiplies torque before it reaches the axles. The trade-off is low vehicle speed. This is why a 4x4 can crawl over an obstacle without needing high road speed.
Why you normally avoid 4L on dry roads
Low range is geared for slow off-road work. In part-time 4WD systems, selecting locked four-wheel drive on high-grip surfaces can also create drivetrain wind-up because front and rear axles cannot relieve speed differences normally.
Grenadier example
The Grenadier uses a two-speed transfer case. Our exhibition photos show the physical low-range selector beside the main automatic gear selector.