2015 Ford Ranger PX Mk2 technical analysis - Practical Motoring

We have fully explained the differences , but for the Ford Ranger there are two types of traction control system (TCS):. That detects when a wheel spins, then applies the brakes to just that wheel, which sends torque (“drive”) to the other wheel, thereby allowing the Ranger to maintain forward momentum, and it’s what you want when you’re offroad. E-TCS , which is the Engine Traction Control system. This is a mechanism that will reduce engine torque if the driven wheels are both spinning, thereby regaining traction as madly spinning wheels mean you’re going nowhere. It kicks in when the optimum wheel slip ratio is exceeded, which means when the computer decides there’s too much torque going to the wheels for the traction available. Like any similar traction control system, B-TCS is a huge improvement for the Ranger’s off-road capability, but what about E-TCS. Happily, that’s been thought of. In 2WD High (4×2 drive mode) both E-TCS and B-TCS work, but E-TCS has the priority as it provides more “refined intervention”, according to Ford. In 4X4 low both DSC and E-TCS are entirely disabled, leaving B-TCS to do its best work, and contrary to received wisdom that won’t slow you down. Source: practicalmotoring.com.au