CUSTOMER CONCERN Customer states the check-engine light is on and DTC P0128 is stored. CAUSE Cold-soak temperature data and cooling-system checks confirmed the engine coolant thermostat was not maintaining the specified regulating temperature. CORRECTION Remove and replace engine coolant thermostat. Refill and bleed engine cooling system. Clear DTC P0128.

CUSTOMER CONCERN Customer states the 12-volt battery goes dead overnight or after the vehicle sits for several days. DTC B1318 may be stored. CAUSE Battery load testing confirmed the 12-volt battery could not maintain the required voltage. CORRECTION Remove and replace 12-volt battery. Clear low-voltage DTCs and verify normal starting operation.

CUSTOMER CONCERN Customer states the brake pedal remains low after front brake-hose replacement and DTC C1525 is stored. CAUSE Air remained trapped in the electronically controlled hydraulic brake system because the required hybrid service-bleed routine had not been completed. CORRECTION Perform complete ABS service-bleed procedure with a compatible scan tool and pressure bleeder. Clear DTC C1525.

CUSTOMER CONCERN Customer states the ABS warning light is on and brake-pedal operation feels abnormal. The ABS module stores C1524, C1526 and U2023. CAUSE Circuit testing at the brake-pedal position sensor found the sensor signal did not agree with the 5-volt reference circuits on the Blue/Brown and Brown/White wires, confirming a failed BPP sensor. CORRECTION Remove and replace brake-pedal position sensor. Perform sensor calibration and clear ABS DTCs.

CUSTOMER CONCERN Customer states the check-engine light is on with DTC P0128. CAUSE Cold-soak temperature comparison confirmed the engine coolant thermostat was not regulating temperature correctly. CORRECTION Remove and replace engine coolant thermostat. Refill and bleed engine cooling system.

CUSTOMER CONCERN Customer states electric power steering assist is inoperative and the PSCM stores DTC C2792. CAUSE Power and ground circuit testing confirmed an internal Power Steering Control Module fault. CORRECTION Remove and replace Power Steering Control Module. Program and configure replacement module as required.