Abstract: Systems and methods for indicating the presence of a mobile device within a passenger cabin are provided. A method for indicating the presence of a mobile device within a passenger cabin of a vehicle includes linking a vehicle computing device with the mobile device, determining whether a vehicle ignition is off and whether a vehicle lock has been actuated. The method further includes generating an audible mobile device search signal that is played through a cabin and waiting to receive a response from the mobile device as to whether the mobile device detected the audible mobile device search signal. The method further includes determining whether the mobile device is within the passenger cabin based on whether a response was received from the mobile device and generating a first audible indication when the mobile device is within the passenger cabin.

Abstract: Method embodiments for analyzing the future performance of a fuel cell stack comprise the steps of: a) generating a first polarization curve data by experimentally measuring the voltage of a fuel cell stack across a current range at a first interval; b) dividing the current range into a plurality of discrete current ranges; c) calculate an average voltage value for each discrete current range; d) fitting all average voltage values to produce a first average polarization curve; e) conducting steps a) through d) at a second interval to produce a second average polarization curve; f) comparing the first average polarization curve to the second polarization curve to calculate the drop in voltage and thereby the fuel cell stack degradation; and g) utilizing the calculated drop in voltage between the first and second polarization curves to predict the polarization of the fuel cells at future time intervals.