Driving and operating 165If AdBlue is not refilled within a certaindistance, further level warnings aredisplayed in the Driver InformationCentre depending on the currentAdBlue level. Later on requests torefill AdBlue and finally theannouncement to prevent an enginerestart are displayed. Theserestrictions are a legal requirement.At an AdBlue range of 560 miles, thefollowing warning messages arealternately displayed in the DriverInformation Centre:● AdBlue Low Refill Now● Engine Restart Prevented in 560milesAdditionally, control indicator Yflashes continuously and a warningchime sounds four times everythree minutes.Before the prevention of an enginerestart is activated, the followingwarning messages:● AdBlue Empty Refill Now● Engine Will Not Restartare alternately displayed in the DriverInformation Centre.Additionally, control indicator Yflashes continuously and a warningchime sounds four times everythree minutes.After the prevention of an enginestart, the following message:Refill AdBlue To Start Vehiclewill be displayed.To restart the engine, the tank mustbe filled with AdBlue first.High emission warningsIf the exhaust emission rises above acertain value, warnings similar to therange warnings as described abovewill be displayed in the DriverInformation Centre.Requests to have the exhaust systemchecked and finally theannouncement to prevent an enginerestart are displayed. Theserestrictions are a legal requirement.Seek your workshop for assistance.Refilling AdBlueCautionOnly use AdBlue that complieswith European standardsDIN 70 070 and ISO 22241-1.Do not use additives.Do not dilute AdBlue.Otherwise the selective catalyticreduction system could bedamaged.NoticeOnly use the designated AdBluecanisters for refilling, to prevent atopping-up of too much AdBlue.Additionally, the fumes in the tankare captured in the canister and donot emerge.Since AdBlue has a limiteddurability, check the date of expirybefore refilling.