4MATIC electronic traction system, function - GF42.35-P-1000AV

MODEL 204.0 with TRANSMISSION 722.960/962/963/964/965 with CODE 800 (Model year 2010) with CODE 801 (Model year 2011) with CODE 802 (Model year 2012) with CODE 803 (Model year 2013) with CODE 809 (Model year 2009) 

MODEL 204.2 with TRANSMISSION 722.962/965 with CODE 800 (Model year 2010) with CODE 801 (Model year 2011) with CODE 802 (Model year 2012) with CODE 803 (Model year 2013) with CODE 809 (Model year 2009) 

MODEL 204.9 with TRANSMISSION 722.960/962/964/965 

MODEL 212 with TRANSMISSION 722.960/961/962 

MODEL 216 with TRANSMISSION 722.961 with CODE 800 (Model year 2010) with CODE 801 (Model year 2011) with CODE 802 (Model year 2012) with CODE 803 (Model year 2013) with CODE 809 (Model year 2009) 

MODEL 221 with TRANSMISSION 722.960/961/962 with CODE 800 (Model year 2010) with CODE 801 (Model year 2011) with CODE 802 (Model year 2012) with CODE 803 (Model year 2013) with CODE 809 (Model year 2009) 

Function requirements for electronic traction system (ETS) 4MATIC in general 

• Circuit 61 (engine running)
• Electronic Stability Program (ESP®) not deactivated

Electronic traction system (ETS) 4MATIC in general 

The ETS is a system which operated automatically to improve the starting off and acceleration ability on different road surface condition. It replaces the automatic locking differential (ASD).

The system operates via an intervention by the brakes at the driven wheels. No engine control cycle is activated. The ETS prevents one-sided spinning of the drive wheels when starting off and accelerating as well as the drive wheels spinning briefly on both sides when cornering within specified speed ranges.

Function sequence for electronic traction system 4MATIC 

Should one or more wheels spin on a smooth surface, the necessary brake pressure is automatically applied at each wheel in order to brake the spinning wheels. Simultaneously due to the locking differential effect the drive torque is shifted to the wheels which are not spinning. The ESP® warning lamp or Electronic Stability Program (A1e41) indicates in the instrument cluster (A1) when a wheel speed no longer matches the vehicle speed. It thus warns the driver that he has approached the physical driving limits with his vehicle.