CUSTOMER CONCERN The electric parking brake is stuck on or will not apply, with a parking-brake motor circuit fault. CAUSE The confirmed repair found the parking-brake motor connector terminals reversed, causing the motor to run in the wrong direction. CORRECTION Correct the parking-brake motor connector terminal positions, clear the parking-brake fault, and verify normal apply and release operation.

CUSTOMER CONCERN After right-front collision repairs and replacement of the right-front air spring, height sensor, and compressor, DTCs C1124:54 and B1041:52 return because the height-sensor calibration will not remain stored. CAUSE The confirmed repair identified a failed Air Suspension Control Module A (SUMA) that could not retain the height-sensor calibration after its power and ground circuits tested correctly. CORRECTION Remove and replace the failed Air Suspension Contr

CUSTOMER CONCERN The tire-pressure warning system stores DTC C2126 because a transmitter ID is not received in main mode after sensor replacement. CAUSE The confirmed repair identified a failed replacement TPMS sensor and an incomplete transmitter-ID registration. CORRECTION Remove and replace the failed TPMS sensor, register all tire-pressure sensor IDs with the scan tool, perform system initialization, clear DTC C2126, and verify all tire pressures display correctly.

CUSTOMER CONCERN After front-end collision repairs and replacement of the front bumper sensors, the parking-assist system stores DTCs C1AEC and C1AEE. CAUSE The replacement ultrasonic parking sensors had not completed detection-angle calibration and registration after the collision repair. CORRECTION Perform the ultrasonic sensor detection-angle procedures and intelligent-clearance sonar registration, clear DTCs C1AEC and C1AEE, and verify parking-assist operation.

CUSTOMER CONCERN The vehicle stalled while driving, required towing, and had a depleted high-voltage battery with DTCs P261A13, C1259, and C1A50. CAUSE The confirmed repair identified a failed 12-volt auxiliary battery as the cause of the stall and related hybrid-system faults. CORRECTION Remove and replace the failed 12-volt auxiliary battery, clear DTCs P261A13, C1259, and C1A50, and verify Ready mode, charging, and normal vehicle operation.

CUSTOMER CONCERN The check-engine light is on with DTC P012800 indicating that engine coolant temperature remains below the thermostat's specified operating range. CAUSE The engine coolant thermostat failed and did not regulate coolant temperature to the specified range. CORRECTION Remove and replace the engine coolant thermostat, clear DTC P012800, and verify coolant temperature reaches and maintains the specified operating range.