4-wheel drive (4WD) refers to a drivetrain that sends power to all four wheels. 4WD drivetrains are either part-time or full-time, which means that power doesn’t always have to go to all four wheels. For example, many SUVs with 4WD drivetrains use 2WD for everyday driving but have an option to switch to 4WD for hazardous conditions or off-roading.
It all started with a 4WD drive switch. Like many car repairs, it all snowballed from there. My husband was driving our 2005 Chevy Trailblazer, and when he went to change the switch to four-wheel drive, the switch wouldn’t budge. Instead, it broke off—through no fault of my husband, I’m told—and the 4X4 service light popped on.
It is possible that you only have 2WD, but the Escape is not really a 4WD, it's an AWD. It runs in front wheel drive until it senses slippage at the front wheels, then it engages the rear wheels. Check for an indicator light on the panel you mentioned. It will light up if the rear wheels are engaged.
This article applies to the Chevrolet Silverado 1500 (1999-present). Four wheel drive, also known as "4WD" or "all-wheel drive" (AWD), means exactly what the name suggests: All four of your vehicle's wheels will operate with the exact same turn-by-turn level of drivability and power, which is ideal for off-road conditions.
As we are aware, most "4-wheel drive" systems are not actually true 4-wheel drive systems. Even in the Jeep Wrangler line- with the exception of the Rubicon which permits both differentials to be locked-in. In the 2012 SR5 model, a locking rear differential is NOT available as an option (nor is it standard).
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how does auto 4 wheel drive work