The 4ETS electronic traction system permanently monitors the speeds of all drive wheels and adjusts them if necessary. At the first sign of wheel spin when accelerating or negotiating a slope, 4ETS applies brake pressure to the wheel or wheels concerned. This transfers more power to the wheels that still have sufficient traction. 4ETS therefore dispenses with the need for conventional centre, front and rear differential locks.
When braking or cornering, 4ETS and ADAPTIVE ESP® act as a team. At the first sign of wheel lock or if the vehicle threatens to lose traction and skid, ADAPTIVE ESP® stabilises the vehicle by applying precisely metered braking to one or more wheels and/or adjusting engine torque. This keeps the vehicle on track and, at the same time, can reduce stopping distances. ADAPTIVE ESP®/4ETS thus reduces the risk of skidding and, within physical limits, optimises traction.