Vehicles including differential lock controller and methods

A vehicle comprising:

• a pair of wheels;
• an engine configured to provide motive power to at least one of the pair of wheels;
• a start switch;
• a differential associated with the pair of wheels and including a differential lock, the differential lock being selectively movable between a locked position and an unlocked position, wherein the pair of wheels is rotatable together when the differential lock is in the locked position;
• a controller associated with the engine and configured to control at least one feature of the engine;
• and
• a relay in electrical communication with each of the start switch and the engine, the relay being operable in one of a first mode and a second mode in response to operation of the engine, wherein when the relay is in the first mode, actuation of the start switch facilitates initiation of operation of the engine, and when the relay is in the second mode, actuation of the start switch facilitates overriding of at least one feature of the controller.

A method of controlling a vehicle, the vehicle comprising a pair of wheels and a differential associated with the pair of wheels and including a differential lock, the method comprising:

• initiating operation of an engine of the vehicle in response to actuation of a start switch when the engine is not operating;
• moving the differential lock to a locked position;
• restricting the wheel speed of at least one of the pair of wheels when the differential lock is in the locked position;
• and
• disabling the restriction of the wheel speed in response to actuation of the start switch during operation of the engine.