Instruments and controls 105When the vehicle battery voltage isrunning low, a warning code 174 willappear in the Driver InformationCentre.1. Switch off immediately anyelectrical consumers which arenot required for a safe drive, e.g.seat heating, heated windscreenand heated rear window or othermain consumers.2. Charge the vehicle battery bydriving continuously for a while orby using a charging device.The warning message or warningcode will disappear after the enginehas been started twice consecutivelywithout a voltage drop.If the vehicle battery cannot berecharged, have the cause of the faultremedied by a workshop.Vehicle personalisationThe vehicle's behaviour can bepersonalised by changing the settingsin the Info-Display.Some of the personal settings fordifferent drivers can be memorisedindividually for each vehicle key.Memorised settings 3 22.Depending on vehicle equipment andcountry-specific regulations, some ofthe functions described below mightnot be available.Some functions are only displayed oractive when the engine is running.Personal settingsGraphic-Info-DisplayPress CONFIG for the Settings menu.Turn the MENU-TUNE control tomove to the desired setup menu, andthen press MENU-TUNE.Select Settingsand then Vehiclesettings.Vehicle settings● Climate and air qualityAuto fan speed: Modifies thelevel of the cabin airflow of theclimate control in Automaticmode.
