A vehicle system includes a processor programmed to receive sensor signals from a LIDAR sensor. The processor estimates frost accumulation on the LIDAR sensor from the sensor signals and compares the estimated frost accumulation to a predetermined threshold. The processor further prevents a host vehicle from operating in an autonomous mode if the estimated frost accumulation exceeds the predetermined threshold.

Methods, systems, and computer program products for self-driving vehicle sensor fault remediation are provided herein. A computer-implemented method includes detecting a fault in one or more sensors of a self-driving vehicle; determining a remedial action in response to the detected fault, wherein said determining comprises (i) comparing the fault to a database comprising (a) historical sensor fault information and (b) sensor fault remedy information, and (ii) analyzing one or more items of contextual information pertaining to the location of the self-driving vehicle; generating a signal comprising one or more instructions pertaining to carrying out the determined remedial action; and outputting the generated signal to one or more remote-controlled pilotless airborne devices configured to remotely carry out the determined remedial action on the self-driving vehicle.

An exemplary pump condition response method includes, in response to a pump condition, operating an engine to discontinue or prevent a first stop-start cycle during a drive cycle. The method permitting a second stop-start cycle during the drive cycle.

A control system for hybrid vehicle for extending a possible travelling distance of the vehicle in the event of clutch failure is provided. The control system is configured to select a first drive mode in which the vehicle is powered by an engine in case an estimated torque transmitting capacity of the clutch in trouble is larger than a first threshold value, and to select a second drive mode in which the vehicle is powered by a motor in case the estimated torque transmitting capacity of the clutch in trouble is smaller than the first threshold value. The control system is further configured to reduce an engine torque to be smaller than the estimated torque transmitting capacity of the clutch in case the first drive mode is selected.

At the time of occurrence of a one-system failure, each of VCIBs carries out limp home traveling control including deceleration in accordance with an instruction from an ADK. At the time of occurrence of a two-system failure, in a case where a vehicle speed can be obtained, one of vehicle fixation systems carries out fixation control, when the vehicle speed becomes zero, and in a case where the vehicle speed cannot be obtained, one of the vehicle fixation systems carries out the fixation control after a lapse of a time period S from a time-counting start moment, when the vehicle speed immediately before the occurrence of the two-system failure is less than a prescribed value, and carries out the fixation control after a lapse of a time period T (>S), when the vehicle speed immediately before the occurrence of the two-system failure exceeds the prescribed value.

At the time of occurrence of a one-system failure, each of VCIBs carries out limp home traveling control including deceleration in accordance with an instruction from an ADK. At the time of occurrence of a two-system failure, in a case where a vehicle speed can be obtained, one of vehicle fixation systems carries out fixation control, when the vehicle speed becomes zero, and in a case where the vehicle speed cannot be obtained, one of the vehicle fixation systems carries out the fixation control after a lapse of a time period S from a time-counting start moment, when the vehicle speed immediately before the occurrence of the two-system failure is less than a prescribed value, and carries out the fixation control after a lapse of a time period T (>S), when the vehicle speed immediately before the occurrence of the two-system failure exceeds the prescribed value.