The A-TRAC button on a Toyota 4Runner stands for Active Traction Control. This feature is designed to help improve traction when driving in slippery or off-road conditions.

When you press the A-TRAC button, it activates a system that helps limit wheel spin by applying braking force to the wheels that are slipping, while directing power to the wheels with more traction. This can be especially useful when driving on loose gravel, mud, snow, or rocky terrain.

In simpler terms, A-TRAC helps the vehicle maintain better control when traction is reduced, making it a valuable tool for off-roading and driving in tough conditions. However, it’s important to note that it is not a substitute for four-wheel drive (4WD) and should be used as an aid in specific conditions.

If you’re driving on a rough surface or in tricky conditions, activating A-TRAC can give you an extra layer of confidence and stability!