118 Driving and operatingRide control systemsTraction Control systemThe Traction Control system (TC) is acomponent of the Electronic StabilityControl.TC improves driving stability whennecessary, regardless of the type ofroad surface or tyre grip, bypreventing the drive wheels fromspinning.As soon as the drive wheels starts tospin, electric drive unit output isreduced and the wheel spinning themost is braked individually. Thisconsiderably improves the drivingstability of the vehicle on slippery roadsurfaces.TC is operational as soon as thecontrol indicator b extinguishes.When TC is active b flashes.9 WarningDo not let this special safetyfeature tempt you into taking riskswhen driving.Adapt speed to the roadconditions.Control indicator b 3 70.DeactivationTC can be switched off when spinningof drive wheels is required: Press bbutton on the overhead console.Control indicator k illuminates and amessage in the Driver InformationCentre (DIC) is displayed.TC is reactivated by pressing the bbutton again.TC is also reactivated the next timethe ignition is switched on.FaultIf there is a problem detected with TC,a message is displayed on the DIC.When this message is displayed andb illuminates, the vehicle is safe todrive but the system is notoperational. Driving should beadjusted accordingly.ResettingIf b comes on and stays on, reset thesystem as follows:1. Stop the vehicle.2. Switch off the ignition and wait for15 seconds.3. Switch on the ignition.If b still comes on and stays on, seekthe assistance of a workshop.
