Driving and operating 183Change speed limitWith speed limiter active, hold orbriefly turn thumb wheel to RES/+ toincrease or SET/- to decrease thedesired maximum speed.Exceeding the speed limitWhen exceeding the limited speedwithout driver input, the speed willflash in the Driver Information Centreand a chime sounds during thisperiod.In the event of an emergency, it ispossible to exceed the speed limit bydepressing the accelerator pedalfirmly nearly to the final point. In thiscase no chime appears.Release the accelerator pedal andthe speed limiter function isreactivated once a speed lower thanthe limit speed is obtained.DeactivationPress y: speed limiter is deactivatedand the vehicle can be driven withoutspeed limit.The limited speed will be stored andis indicated in brackets in the DriverInformation Centre. Additionally, acorresponding message appears.Resume limit speedTurn thumb wheel to RES/+. Thestored speed limit will be obtained.Switching offPress L, the speed limit indication inthe Driver Information Centreextinguishes. The stored speed isdeleted.By pressing m to activate cruisecontrol or adaptive cruise control,speed limiter is also deactivated andthe stored speed is deleted.By switching off the ignition, speedlimiter is also deactivated, but thespeed limit will be stored for nextspeed limiter activation.Adaptive cruise controlAdaptive cruise control (ACC) is anenhancement to traditional cruisecontrol with the additional feature ofmaintaining a certain distance behindthe vehicle ahead.Adaptive cruise control automaticallydecelerates the vehicle whenapproaching a slower moving vehicle.It then adjusts the vehicle speed tofollow the vehicle ahead at theselected following distance. Thevehicle speed increases or decreasesto follow the vehicle in front, but willnot exceed the set speed. It mayapply limited braking with activatedbrake lights.The adaptive cruise control can storeand maintain speeds over approx.15 mph. If following a vehicle aheaddriving slower than 15 mph, theslower speed will be set. On vehicleswith automatic transmission, thesystem brakes to a stop.
