Driving and operating 147Activation or deactivation of the rearview camera can be changed in themenu Settings in the Info-Display.Vehicle personalisation 3 106.FaultFault messages are displayed with a9 on the top line of the Info-Display.The rear view camera may notoperate properly when:■ the surrounding is dark,■ the sun or the beam of headlights isshining directly into the cameralens,■ ice, snow, mud, or anything elsecovers the camera lens. Clean thelens, rinse it with water, and wipe itwith a soft cloth,■ the tailgate is not closed correctly,■ the vehicle had a rear end accident,■ there are extreme temperaturechanges.FuelFuel for petrol enginesOnly use unleaded fuel that complieswith European standard EN 228 orE DIN 51626-1 or equivalent.Your engine is capable of runningwith E10 fuel that fulfills thesestandards. E10 fuel contains up to10 % bioethanol.Use fuel with the recommendedoctane rating 3 210. Use of fuel withtoo low an octane rating can reduceengine power and torque and slightlyincreases fuel consumption.CautionDo not use fuel or fuel additivesthat contain metallic compoundssuch as manganese-basedadditives. This may cause enginedamage.CautionUse of fuel that does not comply toEN 228 or E DIN 51626-1 orequivalent can lead to deposits orengine damage and loss ofwarranty.CautionUse of fuel with too low an octanerating could lead to uncontrolledcombustion and engine damage.Fuel for diesel enginesOnly use diesel fuel that complieswith EN 590.In countries outside the EuropeanUnion use Euro-Diesel fuel with asulfur concentration below 50 ppm.