Auxiliary heating/ventilation: currently unavailable. Battery voltage too low.If this message appears, the vehicle battery is not sufficiently charged. In this case, the engine must be switched on in order to use the auxiliary heating/ventilation.
Auxiliary heating/ventilation: currently unavailable. Not enough fuelTo conserve fuel, the auxiliary heating cannot be switched on if the fuel level is low.
Auxiliary heating/ventilation: fault. Not availableIf this message appears, a system malfunction has occurred. Drive to a qualified workshop soon and have the fault rectified.