08-108-26 REV. A

Flash: Hybrid Control Processor (HCP) / Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P0E15-00 - Hybrid-EV Battery Pack Coolant Heater A Control Performance.
• P0A44 - Drive Motor A Position Sensor 1 Circuit Overspeed.
• U0111-00 - Lost Communication With Battery Energy Control Module (BPCM).
• P1625-00 - Park Pawl System Failure.
• U0412-00 - Invalid Data Received From Battery Energy Control Module-A.
• P215B-00 - Vehicle Speed Output Shaft Speed Correlation.
• P079A-00 - Transmission Friction Element 1 Slip Detected.
• P079B-00 - Transmission Friction Element 2 Slip Detected.
• P084F-00 - Park-Neutral Switch Output Customers may also comment on one or more of the following:
• Vehicle does not start / engine does not crank.
• Extended engine cranking time when starting the vehicle.
• Engine turns on when requesting cabin heat to turn on.
• Loss of heat from the engine.
• Technicians and/or customers may report the vehicle will not pass a state smog check due to permanent fault codes which will not clear. As a result, the vehicles are not eligible to be registered in certain states.
• Vehicle will not start when it is cold (-30°C / -22°F and below).
• Heard and/or felt bump when the gas engine turns on while driving.
• Service Charging System and Traction Battery Cutoff warning messages appear during a key cycle event at -7° C (+20°F).
• Vehicle will force to Park when keyed off in Neutral if the door is open during wake-up procedure and remains open or within 2 minutes of door closure
• Loss of power steering assist when ignition push-button is pressed by driver after a Remote Start.
• Unusual battery drain when DTC, P084F-00 - Park-Neutral Switch Output is set. This software release includes the following software enhancements:
• Corrections to allow the vehicle to clear the permanent fault codes.
• 12V battery overcharged prevention.
• Corrected fuel consumption counter while in charge depleting This bulletin involves reprogramming the **HCP and then the AHCP** with the latest available software.