Lexus ES manuals

Lexus ES: Test Mode Procedure

Lexus ES (XZ10) Service Manual / Brake / Parking Brake / Electric Parking Brake System (for Hv Model) / Test Mode Procedure

TEST MODE PROCEDURE

*1

Rear Disc Brake Piston

*2

Nut

*a

The nut moves inward in pad replacement mode

REAR BRAKE PAD REPLACEMENT MODE

HINT:

When replacing the rear disc brake pad and rear disc, since the nut inside the rear disc brake cylinder assembly is in an advanced position, it is necessary to move the nut back inside the cylinder. The nut can be moved back using pad replacement mode.

(a) Pad replacement mode

When Using the Techstream:
  1. Turn the power switch off.
  2. Connect the Techstream to the DLC3.
  3. Turn the power switch on (IG).
  4. Turn the Techstream on.
  5. Enter the following menus: Chassis / Electric Parking Brake / Utility / Check Mode.

    NOTICE:

    The parking brake must be released.

  6. Follow the Techstream display and select "Next".
  7. Pull and hold the electric parking brake switch assembly to the release side for 5 seconds or more.

    NOTICE:

    • Make sure to perform this procedure with the power switch on (IG).
    • Make sure that the brake pedal is not depressed when performing this procedure.
    • When the system changes to pad replacement mode, DTC C13A7 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.

    HINT:

    When entering pad replacement mode, the parking brake indicator light (red) flashes (0.25 second intervals), and once the assembly finishes operating, the parking brake indicator light (red) flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

Chassis > Electric Parking Brake > Utility

Tester Display

Check Mode
When not Using the Techstream:
  1. Turn the power switch off.
  2. Turn the power switch on (IG).
  3. Within 8 seconds, operate the electric parking brake switch assembly to perform 3 lock side ON operations (from off (release) to on (push)) and then 3 release side ON operations (from off (release) to on (pull)).

    NOTICE:

    • If the operation is performed too quickly, the system may not respond. If the system does not respond, perform the operation again at a slower speed.
    • The parking brake must be released.

    HINT:

    The parking brake indicator light (red) flashes (0.25 seconds intervals).

  4. Pull and hold the electric parking brake switch assembly to the release side for 5 seconds or more.

    NOTICE:

    • Make sure to perform this procedure with the power switch on (IG).
    • Make sure that the brake pedal is not depressed when performing this procedure.
    • When the system changes to pad replacement mode, DTC C13A7 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.

    HINT:

    After a short time passes, the parking brake actuator assembly operates, and once the assembly finishes operating, the parking brake indicator light (red) flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

(b) Turn the power switch off.

NOTICE:

Do not operate the electric parking brake switch assembly until the procedure is complete. If operated, the system will return to its normal condition.

When Using the Techstream:
  1. Disconnect the Techstream from the DLC3.

(c) Normal condition recovery

(1) After the procedure (rear brake pad replacement, etc.) is complete, turn the power switch on (IG) and push the electric parking brake switch assembly to the lock side for 5 seconds or more.

NOTICE:

  • When performing work (replacing the rear brake pad, etc.), do not operate the electric parking brake switch assembly or turn the power switch on (IG) and operate the shift lever. If the electric parking brake switch assembly or shift lever is operated, the parking brake may operate and the rear disc brake piston may fall off. Also, make sure to disconnect the connector of the parking brake actuator assembly or disconnect the cable from the negative (-) auxiliary battery terminal.
  • When DTC C13A7 is stored, clear the DTCs.

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