1- 2wd. 2- 4wd auto. 3- 4wd lock. The drive mode is displayed as an interrupt display on the information screen in the multi-information display when the drive mode is switched. After a few seconds, the information screen returns from the drive mode display to the previous screen. When the Jeep’s part-time case is in either 4-Hi or two-wheel drive, the ratio is 1:1. This means for every rotation of the transmission’s output shaft, the T-case output spins one revolution To fully appreciate the meaning of 4WD on a car, we need to describe what it is. The 4WD system is designed for tough driving conditions where at least one of the car’s tires has to go through a complete loss of traction. These conditions include negotiating deep water or driving off-road with low-traction surfaces. How Does Ram 1500 4Wd Auto Work? The Ram 1500 4WD Auto system is an intuitive, intelligent all-wheel drive system that provides superior traction and control on any terrain. It utilizes a transfer case to automatically switch between two-wheel and four-wheel drive depending on the road conditions, with no driver input required. A car snorkel is an add-on feature for off-road vehicles. It prevents contaminant and water ingestion and raises the engine’s air intake. The snorkel draws in clean air by extending the air intake to the vehicle’s roof or A-pillar. In this guide, we will explore various snorkel types, functions, and working mechanisms. well, the above is sort of right. the diff between 4 auto and 4 hi is all the difference in the world. 4 auto can be selected at any time (even in motion) and as mentioned above the truck will engage all wheels when needed.4 auto is meant especially for rainy conditions. How AWD Works: The Basics. There are different types of AWD systems, but most of them work the same way, in general. The big thing that an AWD system usually includes is a center differential, which is a set of gears that divides the transmission's power to the rear and front axles. An AWD system will usually also have wheel sensors that can The last category is a combination of 4WD and On Demand AWD. These transfer cases have a 2HI, Auto-4WD, 4HI, 4LO and Neutral position and would fall in the general 4WD category. This transfer case has the operating characteristics of both an On Demand AWD and a Part-Time 4WD system depending on the mode selected. kzoqK.