Instrument cluster 111 engine speed range : , e.g. on uphill gra- dients or when overtaking. If the yellow event window is ignored and the AdBlue ® level drops further to approximately 2.5 %, engine output may be reduced. When the AdBlue ® tank has run dry, the event is stored and is signalled by the ; indica- tor lamp when starting the engine as an emis- sion-relevant fault ( Y page 113). Vehicle speed may also be limited to approximately 20 km/h. R If you drive the vehicle within economical engine speed range : , you achieve low fuel consumption and reduced wear. R In engine braking mode, use yellow engine speed range ; .
The highest engine brak- ing effect will be achieved just before red overrevving range = . R When driving downhill, make sure that the engine speed does not rise into red over- revving range = . Fuel gauge R Idling speed is set automatically depending on the coolant temperature. On-board computer and displays AdBlue ® gauge If the 9 fuel level has dropped to approx- imately 14% of the tank capacity, the needle enters the red reserve area. The on-board computer displays a corresponding event window with the 6 symbol. In the Range menu window of the Я trip data menu, you can display your vehicle's range based on the current fuel tank content ( Y page 119). Example:
instrument cluster The AdBlue ® reducing agent is required for reduction of engine emissions. The operating permit is invalidated if the vehi- cle is operated without AdBlue ® . The legal consequence of this is that the vehicle may no longer be operated on public roads. In the Range menu window of the Я trip data, you can display your vehicle's range together with the current fuel tank content ( Y page 119). If the AdBlue ® level has dropped to approx- imately 10% of the tank capacity, a corre- sponding event window appears with the Ш symbol. Top up the AdBlue ® tank in good time ( Y page 218). Example: instrument cluster Z