Driving and operating 147When the system recognises anunintended lane change, the controlindicator ) changes to yellow andflashes. Simultaneously a chimesound is activated.DeactivationThe system is deactivated bypressing ) button, the LED in thebutton extinguishes.At speeds below 35 mph the systemis inoperable.FaultThe lane departure warning systemmay not operate properly when:■ the windscreen is not clean■ there are adverse environmentalconditions like heavy rain, snow,direct sunlight or shadowsThe system cannot operate when nolane marking is detected.FuelFuel for petrol enginesOnly use unleaded fuel that complieswith EN 228.Usage of fuel with quality, notcomplying to the TechnicalRegulations in effect (Decree № 118of 27.02.2008 with amendments of30.12.2008 № 1076) can lead toengine damage and loss of allwarranty obligations.Equivalent standardised fuels with anethanol content of max. 10 % byvolume may be used. In this case onlyuse fuel that complies withE DIN 51626-1.Use fuel with the recommendedoctane rating 3 205. Use of fuel withtoo low an octane rating can reduceengine power and torque and slightlyincreases fuel consumption.
