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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 The hybrid system stores isolation-fault DTCs P0AA6-49 and P1C80-49 for the rear motor area. CAUSE Corrosion in the high-voltage floor under-wire harness caused the documented isolation fault. CORRECTION Remove and replace the corroded high-voltage floor under-wire harness, clear DTCs P0AA6-49 and P1C80-49, and verify high-voltage isolation and hybrid-system operation.

CUSTOMER CONCERN After collision repairs and replacement of the front bumper and steering rack, the intuitive park-assist warning remains on and the EPS system stores U023A-87. CAUSE The replacement steering rack/EPS and clearance-warning system had not been fully configured, and the front ultrasonic-sensor angles had not been registered. CORRECTION Configure the EPS and clearance-warning ECU, perform front ultrasonic-sensor angle registration, clear U023A-87 and related Repo

CUSTOMER CONCERN The engine control module stores DTC P2681-15 for the coolant-flow control circuit. CAUSE The confirmed repair identified a failed coolant flow control valve; Toyota's updated valve was specified for the condition. CORRECTION Remove and replace the failed coolant flow control valve with the updated Toyota unit, clear DTC P2681-15, and verify coolant-flow control operation.

CUSTOMER CONCERN The vehicle was towed in with a no-start condition and DTC P0AA6 for a high-voltage isolation fault. CAUSE The 12-volt auxiliary battery measured only 8.3 volts and would not retain a charge; the confirmed report also found sleep-current draw at approximately 0.03 mA. CORRECTION Remove and replace the failed 12-volt auxiliary battery, clear DTC P0AA6, and verify the vehicle enters READY mode normally.

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 DTC C051D54 sets after rear brake-pad service. CAUSE The multi-axis acceleration sensor zero-point calibration was missing after the rear brake service. CORRECTION Perform the acceleration-sensor zero-point calibration, clear DTC C051D54, and verify normal brake-system operation.

CUSTOMER CONCERN The check-engine light is on with EVAP system DTCs P043E, P043F, P2401, P2402, and P2419. CAUSE The confirmed repair identified a failed charcoal canister assembly containing the EVAP leak-detection pump. CORRECTION Remove and replace the charcoal canister assembly, clear DTCs P043E, P043F, P2401, P2402, and P2419, and verify normal EVAP system operation.

CUSTOMER CONCERN The vehicle will not power up or start. The 12-volt battery tests good, but voltage is low at the underhood jump terminal. CAUSE The stud at No. 3 short connector A90/Y7 was loose, creating excessive resistance and a voltage drop between the 12-volt battery and underhood power distribution. CORRECTION Repair and secure the loose stud at No. 3 short connector A90/Y7, then verify full battery voltage at the underhood jump terminal and normal Ready-mode operatio

CUSTOMER CONCERN The sunroof intermittently opens by itself while the ignition is off. CAUSE Blocked sunroof drains allowed water into the moon-roof control unit, causing internal corrosion and unintended roof operation. CORRECTION Remove and replace the corroded moon-roof control unit, clear the blocked sunroof drains, and verify the roof remains closed with the ignition off and operates normally on command.