Abstract: A system includes a steering-system motor, a first electronic control unit (ECU) and a second ECU each electrically connected to the steering-system motor, a communication line directly communicatively connecting the first ECU and the second ECU, and a gateway module communicatively connecting the first ECU to a controller area network (CAN) bus and communicatively connecting the second ECU to the CAN bus. The first ECU is programmed to, upon detecting a fault, transmit a fault code to the second ECU via the communication line and via the gateway module. The second ECU is programmed to, upon detecting a fault, transmit a fault code to the first ECU via the communication line and via the gateway module.

Abstract: A system includes a steering-system motor, a first ECU and a second ECU each electrically connected to the steering-system motor, a communication line directly communicatively connecting the first ECU and the second ECU, and a gateway module communicatively connecting the first ECU to a CAN bus and communicatively connecting the second ECU to the CAN bus. The first ECU is programmed to, upon detecting a fault, transmit a fault code to the second ECU via the communication line and via the gateway module. The second ECU is programmed to, upon detecting a fault, transmit a fault code to the first ECU via the communication line and via the gateway module.

Abstract: A system includes a computer programmed to specify a feedback torque to a steering wheel in a vehicle. The feedback torque is based on a steering torque applied to a steering rack and a deviation of the steering torque below a minimum torque. The computer is further programmed to actuate feedback torque to the steering wheel.

Abstract: A computer includes a processor and a memory storing instructions executable by the processor to determine a learned clear vision offset based on a currently calculated clear vision offset and a previously stored clear vision offset, and steer a steer-by-wire system of a vehicle while correcting a steering angle by a lesser value of the learned clear vision offset and a maximum correctable offset.

Abstract: A system for a vehicle includes first and second electronic control units (ECUs) each electrically connected to a steering-system motor, and a computer. The computer is programmed to instruct the first and second ECUs to each provide one-half of a value of a torque signal to the steering-system motor upon determining that both ECUs have a full performance capability.

Abstract: A system includes a computer programmed to specify, while a vehicle is turning, a feedback torque based on a steering torque applied to a steering rack and a difference between a desired angle and an actual angle of vehicle steerable wheels. The computer is further programmed to actuate feedback torque to a vehicle steering wheel.

Abstract: A computer includes a processor and a memory storing instructions executable by the processor to determine a learned clear vision offset based on a currently calculated clear vision offset and a previously stored clear vision offset, and steer a steer-by-wire system of a vehicle while correcting a steering angle by a lesser value of the learned clear vision offset and a maximum correctable offset.

Abstract: A system for a vehicle includes first and second electronic control units (ECUs) each electrically connected to a steering-system motor, and a computer. The computer is programmed to instruct the first and second ECUs to each provide one-half of a value of a torque signal to the steering-system motor upon determining that both ECUs have a full performance capability.

Abstract: A vehicle parking brake system includes a power bridge. The power bridge is electrically connected to a primary power source and to a secondary power source. The power bridge has a first condition in which the primary power source is active in which the primary source is electrically connected to a parking brake actuator. The power bridge has a second condition in which the primary power source is not active in which the secondary power source is electrically connected to the parking brake.

Abstract: A system includes a computer programmed to specify, while a vehicle is turning, a feedback torque based on a steering torque applied to a steering rack and a difference between a desired angle and an actual angle of vehicle steerable wheels. The computer is further programmed to actuate feedback torque to a vehicle steering wheel.

Abstract: A system includes a computer programmed to specify a feedback torque to a steering wheel in a vehicle. The feedback torque is based on a steering torque applied to a steering rack and a deviation of the steering torque below a minimum torque. The computer is further programmed to actuate feedback torque to the steering wheel.

Abstract: Methods and systems are disclosed for activating a vehicle ignition system. An example vehicle includes an ignition system, a plurality of sensors, and a processor. The processor a processor is configured to determine, based on data received from the sensors, (i) that a person occupies a driver's seat of the vehicle, (ii) that a key fob corresponding to the vehicle is present, and (iii) that an input has been received at a shifter of the vehicle. The processor is also configured to responsively activate the ignition system.

Abstract: A steering wheel position control system for a vehicle comprises a controller for a vehicle. The controller includes a processor and a memory. The memory stores instructions executable by the processor. The controller is programmed to receive values from the sensors. The controller commands a pivot mechanism to bias a steering wheel to a stowed position based on values from the sensors. The controller also deploys an air bag based on values from the sensors, wherein the steering wheel is pivoted out of a space envelope of the deployed airbag.

Abstract: A current state of a vehicle is identified. Vehicle path curvature limits are determined. A curvature performance profile to follow is determined based at least in part the vehicle path curvature limits. A direction of the vehicle is controlled based at least in part the curvature performance profile.

Abstract: Methods and systems are disclosed for activating a vehicle ignition system. An example vehicle includes an ignition system, a plurality of sensors, and a processor. The processor a processor is configured to determine, based on data received from the sensors, (i) that a person occupies a driver's seat of the vehicle, (ii) that a key fob corresponding to the vehicle is present, and (iii) that an input has been received at a shifter of the vehicle. The processor is also configured to responsively activate the ignition system.

Abstract: Methods and apparatus for virtual torsion bar steering controls are disclosed. A disclosed example apparatus includes a sensor associated with a steering system to measure an operational angle of the steering system, a virtual torsion bar operatively coupled to the steering system, the virtual torsion bar to calculate a control torque based on a request angle and the operational angle, and a torque compensator to control an output torque of the steering system based on the control torque.

Abstract: A computer is programmed to detect a request to steer a host vehicle. The computer is further programmed to determine a steering angle of the host vehicle. The computer is further programmed to send a notification to select one of a first non-autonomous steering mode and a second non-autonomous steering mode. The computer is further programmed to detect a selection of one of the first and second non-autonomous steering modes. The computer is further programmed to steer the host vehicle according to the selected mode and signals received from a user device.

Abstract: A computer is programmed to detect a request to steer a host vehicle. The computer is further programmed to determine a steering angle of the host vehicle. The computer is further programmed to send a notification to select one of a first non-autonomous steering mode and a second non-autonomous steering mode. The computer is further programmed to detect a selection of one of the first and second non-autonomous steering modes. The computer is further programmed to steer the host vehicle according to the selected mode and signals received from a user device.

Abstract: Vehicle steering can be synchronized by first, turning the steering rack from lock-to-lock to determine a steering rack midpoint, second, turning the steering wheel from lock-to-lock to determine a steering wheel midpoint, third, synchronizing the steering rack with the steering wheel based on the steering rack midpoint and the steering wheel midpoint, and fourth, piloting a vehicle based on the synchronized steering rack and steering wheel; wherein the steering rack is mechanically decoupled from a steering wheel of the vehicle before turning the steering rack from lock-to-lock and before turning the steering wheel from lock-to-lock.

Abstract: Vehicle steering can be synchronized by first, turning the steering rack from lock-to-lock to determine a steering rack midpoint, second, turning the steering wheel from lock-to-lock to determine a steering wheel midpoint, third, synchronizing the steering rack with the steering wheel based on the steering rack midpoint and the steering wheel midpoint, and fourth, piloting a vehicle based on the synchronized steering rack and steering wheel; wherein the steering rack is mechanically decoupled from a steering wheel of the vehicle before turning the steering rack from lock-to-lock and before turning the steering wheel from lock-to-lock.