4ETS marking electronically controlled four-wheel drive system. Abbreviation 4ETS is English Four-wheel Electronic Traction System – an electronic four-wheel drive.

The drive 4ETS works without the cap differential. Instead of closing the differential system přibrzďuje individual wheels with reduced adhesion to the ground. The delegates more power to those wheels that have good adhesion to the road surface. Thanks to these targeted and very rapid braking impulses to achieve greater impact than the use of three sheets differential.

Source: www.mercedes-benz.com

The automatic braking system pulses are controlled in coordination with the system ESP data conveyed through movement sensors car. The core is a single transmission 4ETS open central differential, which incorporates the speed of compensation on the axes. It is directly associated with the automatic transmission and, together with engine speed converter and drive the front wheels complete drive unit.

Source: www.mercedes-benz.com