Air ingestion into a transmission hydraulic system may lead to a number of issues. For example, the time to engage a hydraulically actuated parking mechanism may be excessive. As another example, the pump may not prime properly on a subsequent engine start. The air ingestion issue may be detected based on variability of transmission line pressure. When the line pressure variability exceeds a threshold, actions are taken to mitigate the potential issues.

Methods and systems are provided for adjusting clutch pressures and electric machine torques as a function of a stability metric threshold(s) in order to balance performance and charging of an onboard energy storage device. In one example, a method includes during an upshift of a transmission from a first gear to a second gear, adjusting a clutch pressure of the transmission to adjust slippage of a clutch in response to a vehicle stability control parameter exceeding a threshold. In this way, torque delivered to a transmission output shaft may be reduced, which may increase vehicle stability.

A system includes a computer including a processor and a memory, the memory storing instructions executable by the computer to operate a component in a vehicle in an autonomous mode, detect an impact to the vehicle, and then actuate any of a propulsion, a brake, and a steering only according to user input.

A method for controlling a parking mode for a vehicle includes detecting an activation action of a user of the vehicle, determining a movement status of the vehicle, and activating a parking mode for the vehicle by closing a parking brake of a brake device of the vehicle and by engaging a gearshift lock of a transmission of the vehicle.

A hybrid vehicle control device has: a determining portion determining, during idle engine operation, whether a meshing state is achieved in which the lock member is meshed with the parking gear, or a non-meshing state is achieved in which the lock member is not meshed with the parking gear; and a control portion providing a control of applying the running electric motor torque to the rotary member to eliminate a gap in a meshing portion between gears in the power transmission system and a gap in a meshing portion between the parking gear and the lock member when it is determined that the meshing state is achieved, and providing a control of applying a torque of the differential electric motor to the rotary member to eliminate a gap in the meshing portion between gears in the power transmission system when it is determined that the non-meshing state is achieved.

A control device that controls a vehicle drive device provided with a transmission mechanism and a rotating member in a power transmission path in this order from a drive power source side, and provided with a parking lock mechanism that restricts rotation of the rotating member by allowing an engaging member to engage with the rotating member, the power transmission path connecting a drive power source to wheels.

A method may include at least a step for inputting a parking position signal and a step for issuing a braking signal. In the step for inputting a parking position signal, at least one parking position signal is input that represents a movement of a gearshift lever of an automatic shifting device in the vehicle toward a gearshift lever parking position (P) by a driver of the vehicle via at least one intermediate position (Z). In the step for issuing a braking signal, at least one braking signal is issued for executing a braking procedure to reduce the speed of the vehicle using the parking position signal when the speed of the vehicle exceeds a predetermined minimum speed.

A brake control device is a control device for a vehicle used in a vehicle on which the shift-by-wire system and the brake-by-wire system are mounted. A function of automatically operating the brake device without an operation of the driver of the vehicle is referred to as a BBW automatic operation function, and a request by the driver for disabling the BBW automatic operation function is referred to as a disabling request. A brake control device includes a disabling determination part configured to determine a presence or absence of the disabling request, the vehicle stop determination part configured to determine whether the vehicle is stopped, a slope determination part configured to determine whether the vehicle is located on a slope, and a BBW automatic operation part. The BBW automatic operation part operates the brake device when the vehicle is stopped on the slope even if the disabling request is made.

A parking brake control device is a control device for a vehicle used in a vehicle on which a shift by wire system and an electric parking brake system are mounted. A function of automatically operating an electric parking brake without an operation of the driver of the vehicle is referred to as an EPB automatic operation function, and a request by the driver for disabling the EPB automatic operation function is referred to as a disabling request. The parking brake control device includes a disabling determination part configured to determine a presence or absence of the disabling request, a vehicle stop determination part configured to determine whether the vehicle is stopped, a slope determination part configured to determine whether the vehicle is located on a slope, and an EPB automatic operation part. The EPB automatic operation part operates the electric parking brake when the vehicle is stopped on the slope even if the disabling request is made.

A vehicle control apparatus sets a target speed of a vehicle such that a maximum value of the target speed is a first speed during a parking assist control. The vehicle control apparatus executes the parking assist control with maintaining a speed of the vehicle at a speed equal to or slower than a predetermined speed limit value slower than the first speed when a predetermined condition that the vehicle moves along a downward slope, is satisfied when a first electric power source device is in a normal state during the parking assist control. At least one of a braking apparatus and a shift change apparatus executes a stopping control of stopping the vehicle when a malfunction occurs in the first electric power source device during the parking assist control.