110 Instruments and controlsFaultThe traffic sign assistant system maynot operate correctly when:■ the area of the windscreen, wherethe front camera is located, is notclean■ traffic signs are completely orpartially covered or difficult todiscern■ there are adverse environmentalconditions like heavy rain, snow,direct sunlight or shadows. In thiscase No Traffic Sign Detection dueto Weather is indicated on thedisplay■ traffic signs are incorrectly mountedor damaged■ traffic signs do not comply with theWiener Übereinkommen überStraßenverkehrszeichen (ViennaConvention on traffic signs)CautionThe system is intended to help thedriver within a defined speedrange to discern certain trafficsigns. Do not ignore traffic signswhich are not displayed by thesystem.The system does not discern anyother than the conventional trafficsigns that might give or enda speed limit.Do not let this special featuretempt you into taking risks whendriving.Always adapt speed to the roadconditions.The driver assistance systems donot relieve the driver from fullresponsibility for vehicleoperation.Battery voltageWhen the battery voltage is runninglow, a warning message or warningcode 174 will appear in the DriverInformation Centre.1. Switch off immediately electricalconsumers which are not requiredfor a safe ride, such as seatheating, heated rear window orother main consumers.2. Charge the battery by drivingcontinuously for a while or byusing a charging device.The warning message or warningcode will disappear after the enginehas been started two timesconsecutively without voltage drop.If the battery cannot be recharged,have the cause of the fault remediedby a workshop.
