FIELD

The present description relates to methods and a system for adaptively switching which of a plurality of engine starting devices is selected to start an engine. The methods and systems may be suitable for vehicles that include more than one engine starting device.

BACKGROUND AND SUMMARY

An engine of a vehicle may be pulled-up (e.g., engine rotational speed is increased to a cranking speed to facilitate combustion with the engine) or started so that the engine may propel the vehicle and/or to charge an electric energy storage device. The engine may be pulled-up or started via one of a plurality of engine starting devices. For example, the engine may be started via a low voltage starter, a belt integrated starter/generator, or an integrated starter/generator. However, if the vehicle is operated in an atypical way, one or more of the engine starting devices may be applied to start the engine more than may be expected. Consequently, the one or more engine starting devices may enter a degraded state sooner than may be expected.

It should be understood that the summary above is provided to introduce in simplified form a selection of concepts that are further described in the detailed description. It is not meant to identify key or essential features of the claimed subject matter, the scope of which is defined uniquely by the claims that follow the detailed description. Furthermore, the claimed subject matter is not limited to implementations that solve any disadvantages noted above or in any part of this disclosure.

