Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Test Mode Procedure

When Using the Techstream:

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Chassis / Brake/EPB / Utility / EPB Full Release

   NOTICE:

   The parking brake must be released.

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

   NOTICE:

   • Make sure to perform this procedure with the engine 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 C060E2A, C06132A or C13B800 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.

   HINT:

   Once the operation finishes, the parking brake indicator light flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

When not Using the Techstream:

1. Turn the engine switch off.
2. Turn the engine switch on (IG).
3. Within 8 seconds, operate the electric parking brake switch (electric parking brake switch assembly) to perform 3 lock side ON operations (from off (release) to on (pull)) and then 3 release side ON operations (from off (release) to on (push)).

   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. Push and hold the electric parking brake switch (electric parking brake switch assembly) to the release side for 5 seconds or more.

   NOTICE:

   • Make sure to perform this procedure with the engine 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 C060E2A, C06132A or C13B800 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 flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

When Using the Techstream:

1. Disconnect the Techstream from the DLC3.

NOTICE:

• When performing work (replacing the rear brake pad, etc.), do not operate the electric parking brake switch (electric parking brake switch assembly) or turn the engine switch on (IG) and operate the shift lever. If the electric parking brake switch (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 (-) battery terminal.
• When DTC C060E2A, C06132A or C13B800 is stored, clear the DTCs.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...

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