Abstract: This disclosure describes systems and methods for determining tire inflation pressure loss. An example method may include receiving first tire pressure data for a first tire of a vehicle at a first time. The example method may also include receiving second tire pressure data for the first tire at a second time. The example method may also include identifying a slow leak in the first tire based on a relationship between the first tire pressure data and the second tire pressure data. The example method may also include causing to send an alert to a user.

Abstract: A computer includes a processor and a memory storing instructions executable by the processor to input steering torque data and steering wheel angle data to a machine learning program trained to output a status of a hand of an occupant relative to a steering wheel, the status being one of (1) the hand is on the steering wheel, (2) the hand is off the steering wheel and no weight is applied to the steering wheel, or (3) the hand is off the steering wheel and a weight is applied to the steering wheel, and actuate a steering subsystem when the output of the machine learning program indicates that the hand of the occupant is off the steering wheel.