Apparatus and method for determining a fill level and a temperature of a fluid

An apparatus for determining a fill level and a temperature of a fluid, wherein there are provided means to receive in response to a respective filling level electrical measurements to a cooled over a correspondingly large area different from the fluid heating wire, wherein the heating wire (21) comprises a PTC / PTC characteristic, and is an evaluation circuit by measuring the voltage when current level sensor and at the same time designed as a fluid temperature sensor, and wherein the evaluation circuit is adapted to reproducing based on the measured at a respective level, the temperature increase of the heating wire (21) curve shape to the stationary starting temperature of the heating wire (21) a cooling fluid in a non-energized state and on the level of the fluid infer.