Instruments and controls 93Illuminates for a few seconds after theignition is switched on. The system isready for operation when the controlindicator extinguishes.If the control indicator does notextinguish after a few seconds, or if itilluminates while driving, there is afault in the ABS. The brake systemremains operational but without ABSregulation.Antilock brake system 3 147.Gear shiftingR or S with the number of a higher orlower gear is indicated, when up- ordownshifting is recommended for fuelsaving reasons.Descent control systemu illuminates or flashes green.Illuminates greenThe system is ready for operation.Flashes greenThe system is in operation.Lane departure warning) illuminates green or flashes yellow.Illuminates greenSystem is switched on and ready tooperate.Flashes yellowSystem recognises an unintendedlane change.Lane departure warning 3 164.Electronic Stability Controloffn illuminates yellow.The system is deactivated.Electronic Stability Controland Traction Control systemb illuminates or flashes yellow.IlluminatesA fault in the system is present.Continued driving is possible. Drivingstability, however, may deterioratedepending on road surfaceconditions.Have the cause of the fault remediedby a workshop.FlashesThe system is actively engaged.Engine output may be reduced andthe vehicle may be brakedautomatically to a small degree.Electronic Stability Control 3 149,Traction Control system 3 148.Traction Control system offk illuminates yellow.The system is deactivated.Preheating! illuminates yellow.Preheating of diesel engine isactivated. Only activates whenoutside temperature is low.
