What does the dashboard display 4wd mean?
1 Answers
The dashboard displaying 4wd indicates that the vehicle is operating in four-wheel drive mode. 4wd stands for four-wheel drive system, which was initially used primarily in rugged off-road vehicles but is now also applied in urban SUVs. The advantage of 4wd is that all four wheels are driven. For example, when driving on muddy roads, if one wheel or the front two wheels get stuck, the rear two wheels can still drive, allowing the vehicle to pass through smoothly. 4wd is divided into three types: on-demand four-wheel drive, part-time four-wheel drive, and full-time four-wheel drive. On-demand four-wheel drive means the computer automatically detects poor road conditions or wheel slippage, and then the vehicle's computer distributes the engine's output torque to the two front wheels, naturally switching to four-wheel drive mode. Part-time four-wheel drive allows the driver to manually switch between two-wheel drive and four-wheel drive modes by engaging or disengaging the transfer case based on road conditions. Full-time four-wheel drive systems do not require driver intervention; the front and rear wheels always maintain four-wheel drive mode, with the engine's output torque distributed equally (50:50) between the front and rear wheels during driving, ensuring equal torque to both sets of wheels.
