This means you’ll still experience some loss of traction in turns. Generally speaking, it’s better to use 4WD on ice than 2WD. It reduces torque delivered to the wheels and makes driving safer, but only if you know how. Some AWD cars may lose traction even in 4WD modes, particularly when driving straight uphill.
*“4WD Auto can be used on any road condition without risk of damaging your vehicle. Low range is meant predominantly for off-road situations, and should not be used at speeds above 45 mph.” Source. Auto 4×4 does use more gas as drivetrain components rotate when engaged. This keeps the front wheels activated at a moment’s notice.
Auto - Front axle locked in, all power still goes to the rear. If the rear slips, power is sent to the front axle and power flows according to what it needs to get the vehicle from slipping. 4 Hi and 4 LO - Front axle locked in, and the t case does a 50/50 split of power.
When you shift to auto 4 wheel drive, your front axle is engaged so all of the components of your front axle are turning as you drive (front shafts, driveshaft ETC).The transfer case DOES apply a very slight (maybe 5%) rotational force (torque) through an internal clutch to the front driveshaft and because the front axle is engaged, it is ready and waiting for a "slipping event" from the rear
The vacuum switch on top of the transfer case was a huge problem. It doesn't stay in 4WD exactly. the switch applies vacuum to the front axle actuator, causing the front axle to stay engaged, which is different from actually being in 4WD. However, it will feel like it's in 4WD when you try to turn because the axles will bind up.
These modes are electronically controlled by an AutoTrac ® 2-speed transfer case. The way you change modes depends on your vehicle. There will either be a knob or a row of buttons located on your instrument panel to the left of the steering wheel. If using a knob, simply rotate the knob to reach the desired mode.
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how does 4wd auto work
