Abstract: A method is provided for suppressing interference in a motor vehicle radio that is capable of executing a seek/scan function. Interference may occur from signals generated by a source of time varying signal that operates in the motor vehicle at a predetermined operating frequency. The method comprises the steps of sending a message indicating initiation of a seek/scan function. In response to this message, the operating frequency of the source of time varying signal is cycled between the predetermined operating frequency and an adjusted operating frequency.

Abstract: A motor vehicle turn signal and a method for detecting an error in the turn signal are provided. The turn signal comprises a plurality of LEDs arranged in parallel banks and receiving current from a power source. A detector coupled to each of the parallel banks provides an error message if the current in one of the banks falls outside a predetermined limit. A current sink is coupled to the power source and is configured to be activated in response to the error message. When activated, the current sink causes a change in state of the power source. In accordance with one embodiment of the invention, detection of the change in state of the power source causes the generation of an error indicator to alert the driver to a turn signal malfunction.

Abstract: The present invention provides a method for improving fuel economy in hybrid vehicles. More precisely, the method of the present invention includes a selectable “learn mode” in which the vehicle can learn a particular driving schedule. After a particular driving schedule is learned, the schedule can be recalled to optimize fuel economy on future trips following the same route. By recalling a learned schedule, the system knows in advance what energy level will be needed and can proactively charge the hybrid vehicle's battery to an appropriate level.

Abstract: Methods are provided for suppressing interference in a motor vehicle radio such as an AM radio from the operating frequency or the harmonics of the operating frequency of a source of time varying signal such as a switching power supply in response to tuning the radio to a selected frequency. The method comprises the steps of communicating the selected frequency to the source of time varying signal, comparing the selected frequency to the operating frequency and to the harmonics of that operating frequency, and adjusting the operating frequency if the operating frequency or any of the harmonics of the operating frequency fall within a predetermined interference range of the selected frequency.