Driving and operating 1499 WarningDo not let this special safetyfeature tempt you into taking riskswhen driving.Adapt speed to the roadconditions.Control indicator b 3 93.DeactivationTC can be switched off when spinningof drive wheels is required: press bbriefly.Control indicator k illuminates.A status message appears in theDriver Information Centre when TC isdeactivated.When TC is deactivated, ESCremains active but with higher controlthreshold.TC is reactivated by pressing bagain. A status message pops up inthe Driver Information Centre whenTC is reactivated.TC is also reactivated the next timethe ignition is switched on.FaultIf there is a fault in the system thecontrol indicator b illuminatescontinuously and a message appearsin the Driver Information Centre. Thesystem is not operational.Have the cause of the fault remediedby a workshop.Electronic Stability ControlElectronic Stability Control (ESC)improves driving stability whennecessary, regardless of the type ofroad surface or tyre grip.As soon as the vehicle starts toswerve (understeer/oversteer),engine output is reduced and thewheels are braked individually.ESC operates in combination with theTraction Control system (TC). Itprevents the drive wheels fromspinning.ESC is operational after each enginestart as soon as the control indicatorb extinguishes.When ESC operates b flashes.