Abstract: A locking differential includes a dog clutch configured to selectively couple a carrier to an axle shaft in response to magnetic forces generated by electrical current in a coil. A method of operating the differential is adapted to avoid failed engagement attempts that could potentially damage the dog clutch. If a driver commands engagement of the locking feature while a differential speed, a controller waits to command engagement of the dog clutch until the differential speed decreases below a threshold. The controller measures or infers a temperature of the differential fluid and adjusts the threshold to higher values when the temperature is cold.

Abstract: A locking differential includes a dog clutch configured to selectively couple a carrier to an axle shaft in response to magnetic forces generated by electrical current in a coil. A method of operating the differential is adapted to avoid failed engagement attempts that could potentially damage the dog clutch. If a driver commands engagement of the locking feature while a differential speed, a controller waits to command engagement of the dog clutch until the differential speed decreases below a threshold. The controller measures or infers a temperature of the differential fluid and adjusts the threshold to higher values when the temperature is cold.

Abstract: A system, method, and computer program product is provided for remote vehicle diagnostics, telematics, monitoring, configuring, and reprogramming. The system includes an on-board unit disposed on at least one vehicle, an application-service-provider infrastructure, and an interface. The on-board unit is operable to send and receive data corresponding to at least one vehicle operating characteristic. Located on the application-service-provider infrastructure is an application suite. The application suite includes at least one modular application each of which has an associated function that processes said data obtained via the on-board unit. The interface is operable to select from the application suite at least one of the modular applications that will use the associated function to diagnose, monitor, configure, reprogram, and/or obtain telematic information from the at least one vehicle.