Many drivers confuse the concepts of "SUV" and "ATV". Any SUV is a WHEELED off-road vehicle. You can feel confident in the snow only on TRACKED vehicles. That is, if in the summer an off-road driver can still risk driving straight across the field to the lake shore, then in winter it is better not to do this.
Never forget the rule of off-road driving: "The more you walk, the further you drive." Therefore, we get out of the car and evaluate the snow cover. If the depth of dense packed snow exceeds half the wheel of a jeep, it is better to abandon the idea. Of course, the SUV must be shod in winter tires. It is winter and preferably with spikes. Because even "toothy" mud tires are able to polish four slippery holes in the snow, in which the wheels will sit as securely as a golf ball in its hole. To increase the jeep's snow performance, it is useful to reduce tire pressure to 0.8-1 atmosphere. The most important trump card will be a winch with a set of extension cables.
We will use differential locks in advance - if any. Immediately turn on the downshift. Trying to ride without it is a very common mistake. Even if the jeep is equipped with a powerful V8, capable of turning the wheels even in hardening cement, you still need to turn on the reduction. And get under way from the second or third gear. Thus, we are insured as much as possible against slipping, which will instantly "bury" the SUV in the snow. Then we go, maintaining 2.000-2.500 rpm, and we treat the "gas" pedal as if it were suspended on a glass thread. Switching in deep snow should not be done unless absolutely necessary.
It's easier with an automatic. "Automatic" will choose the optimal step. Just do not set the selector to position "L" or "1". Unable to move to the next stage, the engine spins up to too high a speed, which again threatens to spin the wheels. For snowy off-road, it is better to use position "3" or simply turn off the overdrive with the button. The only drawback of the "machine" is the inability to get out of the swing if the car is stuck. There are several nuances in driving on snow. It is necessary to be wary of lowlands and descents. The SUV's bumper, like the blade of a bulldozer, shovels a pile of snow in front of it, and the car stands up. And to file back, especially on a steep descent, will not work. It also needs to be rotated carefully. Where the SUV will calmly pass in a straight line, you can easily get bogged down if the front wheels are turned to the side. Indeed, in this case, they rest against the snow with their sidewalls, and the rear wheels have to "tread" their own track. Thus, the resistance to movement is doubled. Therefore, turning or, moreover, turning around on snowy off-road should be along the maximum radius. The less you turn the steering wheel, the lower the chances of getting bogged down. If possible, do not stop in the snow. Not the fact that then you can move.