Driving and o peration 133Drive control systemsElectronic Stability Co ntro l (ESC)The Electronic Sta bility Control improvesdriving stability when necessary,independently of the type of road surfa ceand the ty re grip. It a lso prevents the drivewheels from spinning.The system monitors vehicle m ovements.As soon as the vehicle starts to swerve(und ersteers / ov ersteers), engine output isred uced (the sound of the engine changes)and individual wheels are specificallybraked. This considerably im proves thedriving stability of the vehicle on snow andice and on wet or slipp ery road surfaces.ES C is ready for opera tion after the ignitionis sw itched on and the ES C controlindicators 7, A a nd J illuminate thenexting uish after a pprox. 4 seconds.When the ESC comes into action, controlindica tor 7 flashes in the instrumentcluster. Some noise or vibration may beapparent.The vehic le is now in a critical situation;the ESC helps you to keep control of thevehicle and remind s y ou to match yourspeed to the road c onditions.ESC Activ e & Warning control ind icator 7The control indicator illuminates in yellowfor approx. 4 seconds when the ig nition isswitched on. The system is ready foroperation w hen it ex ting uishes.Flashing w hen dri ving;The sy stem has come into a ction. Theeng ine output m ay be red uced (the soundof the engine c hanges) and the v ehiclema y be braked automatically to a smalldegree.I lluminat ed when drivi ng;Fault in the system. Poor road surfaceconditions may cause v ehicle sta bility to beimpa ired.Hav e the cause of the fault rem edied by aworkshop. The system ’s integrated self-diag nostics allow s faults to be quicklyremedied.9 WarningDo not let this special safety fea turetempt you into taking risk s w hen driving.Traffic safety c an only be achieved byadopting a responsible driving style.