ELECTRIC PARKING BRAKE SYSTEM PRECAUTION


  1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

    Note

    When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system(s) after the cable is reconnected.

    System Procedure
    LKA/LDA System

    Click here

    Stop and Start System
    Parking Assist Monitor System (w/ Parallel Parking Assist Function)
    Parking Assist Monitor System (w/o Parallel Parking Assist Function)
    Panoramic View Monitor System
    Power Door Lock Control System
    Pre-Crash Safety System
    Power Back Door System
    Lighting System (EXT)
    Adaptive High Beam System

  2. TROUBLESHOOTING PRECAUTIONS


    1. If a problem is caused by a poor connection of a terminal or poor installation of a part, reconnecting the terminal or removing and reinstalling the part may solve the problem or may temporarily return the system to normal.

    2. To determine the cause of a problem, check for DTCs or confirm the vehicle operating conditions when the problem occurred and note them down before disconnecting connectors or removing parts.

    3. Be sure to check for DTCs in other systems as a problem may be caused by a malfunction in another system.

    4. Unless otherwise stated, ensure that the engine switch is off when removing or installing parts.

    5. When inspecting the rear brakes, disconnect the connector of the parking brake actuator assembly or disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      When the electric parking brake switch assembly is operated, the rear disc brake piston may operate and become caught.

    6. Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.

    7. If a component has been removed and installed, confirm that the system operates normally by checking for DTCs after installation has been completed.

  3. HANDLING PRECAUTIONS


    1. When tilting the vehicle to perform work after parking the vehicle on a level surface, the braking force may not be sufficient. Make sure to pull the electric parking brake switch assembly to the lock side 2 times (2 lock operations).

      Tech Tips


      • The electric parking brake system determines the amount of force used to operate the parking brake according to the tilt angle detected by the deceleration sensor (airbag ECU assembly (for Optitron Meter Type) or yawrate sensor assembly (for TFT Meter Type)).

      • When the electric parking brake switch assembly is pulled to the lock side 2 times (2 lock operations), the maximum amount of braking force is applied.

    2. The parking brake indicator light blinks (red) when the engine switch is turned on after replacing the skid control ECU (brake actuator assembly). Operate the electric parking brake switch assembly to turn off the parking brake indicator light.

  4. CAN COMMUNICATION SYSTEM PRECAUTIONS


    1. The CAN communication system is used for communication between the skid control ECU (brake actuator assembly), steering angle sensor, yaw rate and acceleration sensor and other ECUs. If there is trouble in a CAN communication line, corresponding DTCs in the communication line are output.

    2. If any CAN communication DTCs are output, repair the malfunction, then troubleshoot the VSC system while communication is normal.

    3. In order to enable CAN communication, a specific type of wiring is used for the CAN communication lines. The wiring used for each communication line is a twisted pair of wires that have an equal length.

      A bypass wire should not be used because the data being transmitted will be corrupted.

  5. PRECAUTIONS FOR TOWING VEHICLES


    1. For towing precautions: Click here

  6. PARKING BRAKE FORCED RELEASE METHOD


    1. For the parking brake forced release method: Click here