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Emergency Release of Electronic Parking Brake: Operation

CAUTION:
  • Perform this operation only when the parking brake must be released in emergency situation such as a system malfunction. 
  • When performing this procedure, be sure to fully confirm safety in the nearby area and park the vehicle on a horizontal ground. 
  • Always use the jack-up point when the shop jacks or rigid racks are used to support the vehicle. 
  • When removing the bolt, the parking brake actuator turns due to reaction force generated by the motor. Be careful not to pinch your hand. 
  • Wrap the tip of a screwdriver with cloth in order not to damage the caliper body that will be reused. 
  • Always remove the parking brake actuator while holding it by hand because the parking brake actuator falls off during removal. 
  1. Using the Subaru Select Monitor, select [Electric Parking Brake Compulsion Release Mode] in [Work Support] of [Brake Control]. Ref. to COMMON (DIAGNOSTICS)>WORK SUPPORT .
  2. Perform the operation according to the display screen.
  3. With the following procedure, release the parking brake on the unreleased side.
    1. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
    2. Set the wheel stoppers to front tires.
    3. Jack-up the rear side of vehicle and support it with rigid racks.
    4. Remove the rear wheels. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>REMOVAL .
    5. Disconnect the connector from the parking brake actuator.
    6. Using a hexagon wrench, remove the bolts from the parking brake actuator.
      CAUTION:

      Do not insert a tool into the seal surface (a) on the parking brake actuator. 

      G14602384Courtesy of SUBARU OF AMERICA, INC.
    7. Put a screwdriver between the parking brake actuator and the support rear disc brake (a), and push out the parking brake actuator.
      G14602385Courtesy of SUBARU OF AMERICA, INC.
    8. Insert a screwdriver into the gap (a) made by pushing the parking brake actuator, and then remove it.
      G14602386Courtesy of SUBARU OF AMERICA, INC.
    9. Using TORX® E12, turn the caliper body spindle bolt clockwise by approx. 1 rotation.
      NOTE:

      Turn both the left and right sides clockwise. 

      G14602387Courtesy of SUBARU OF AMERICA, INC.
    10. Confirm that the parking brake lock is released and the disc rotor rotates.
    11. Temporarily install the parking brake actuator.
      CAUTION:
      • When the emergency release of parking brake was performed, replace the parking brake actuator with a new part after the system trouble is resolved. 
      • Do not connect the connector. It may be locked again due to continuity. 
      • If the vehicle needs to be moved, cover the connector with vinyl tape to prevent foreign matter from entering, and secure it in an area where no interference occurs. 
    12. Install the parking brake actuator.

      Tightening torque: 

      8 N.m (0.8 kgf-m, 5.9 ft-lb)

    13. Connect the connector to the parking brake actuator.
    14. Install the rear wheels. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>INSTALLATION .
    15. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
    16. When the emergency release of parking brake was performed, be sure to perform the inspection related to the parking brake system.
    NOTE:

    For inspection, refer to "Basic Diagnostic Procedure" of "BRAKE CONTROL (DIAGNOSTICS)". Ref. to  BRAKE CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE  . 

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