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Home >> Lexus >> 2022 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake System (W/O Advanced Park) - Diagnostic Codes & Symptom Tests >> ELECTRIC PARKING BRAKE SYSTEM (w/o Advanced Park) >> DTC C13AA: EPB High Temperature [10/2020 - 10/2023] >> Description

DTC C13AA: EPB High Temperature [10/2020 - 10/2023]: Description

If the electric parking brake is used continuously, the parking brake with bracket actuator assembly overheat prevention temporarily stops the system.

This DTC is stored to protect the system and is not a malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13AA EPB High Temperature Detection Condition 1:
  • Diagnosis Condition:

    Electric parking brake operating

  • Malfunction Status:

    Lock and release operations are performed within less than 2 seconds

  • Malfunction Duration:

    The malfunction status repeats 10 times

Detection Condition 2:

  • Diagnosis Condition:

    Electric parking brake operating

  • Malfunction Status:

    Lock and release operations are performed within less than 2 seconds and target current is not achieved during lock control

  • Malfunction Duration:

    The malfunction status repeats 5 times or more, but less than 10 times

Overheat due to continuous use of system Yes An electric parking brake system malfunction is displayed on the multi-information display.
DTC DETECTION CONDITION COMBINATION TABLE: C13AA

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Electric parking brake operating ◦ ◦
Malfunction Status Lock and release operations are performed within less than 2 seconds ◦ -
Lock and release operations are performed within less than 2 seconds and target current is not achieved during lock control - ◦
Detection Time The malfunction status repeats 10 times The malfunction status repeats 5 times or more, but less than 10 times
Trip Count 1 trip 1 trip

HINT: 

If the conditions match either of these patterns, a DTC will be output.