2025-02-20

Hydraulic Control Unit (HCU) - Brake (Remove and Replace)

Correction code 3310010102 FRT 1.92 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

Install

  1. Install the brake HCU, and back to the current procedure before bleeding the calipers. See Hydraulic Control Unit (HCU) - Brake (Remove and Install).
  2. Reinstall the vehicle firmware. See Software Reinstall - Touchscreen.
  3. Locally connect a laptop with Toolbox 3 to the vehicle. See Toolbox 3 (Connect and Disconnect).
  4. Clean the area around the brake fluid reservoir breather cap and remove the cap.
  5. Add clean brake fluid to the MAX level in the reservoir.
  6. Install the pressure bleeder adapter onto the vehicle brake reservoir.
  7. Connect power supply to the bleeder tool, and then turn the bleeder tool on.
  8. Set the brake bleed reservoir pressure to 30 PSI, and then attach the brake bleed reservoir to the brake bleed adapter.
  9. Bleed the LH front caliper.
    1. Remove the LH front caliper inner bleed valve cover, and then install the fluid catcher.
    2. Open the inner bleed valve and watch the fluid as it flows out of the caliper.
    3. In Toolbox, click on the Actions/Autodiag tab, and then search for "Bleed FL".
    4. Click PROC_ESP_FRONT-L-REAR-R_BRAKE-BLEEDvia Toolbox: (link), click Run and allow the routine to complete.
    5. Close the bleed valve when the pump stops, or when clean fluid without bubbles flows out of the caliper.
    6. Make sure that the reservoir does not go empty, or that the catch bottle does not overfill.
    7. Repeat step 9.b through step 9.f until clean fluid without bubbles flows out of the caliper.
    8. Remove the fluid catcher, and then torque the LH front caliper bleed valve and install the valve cap.
      18.5 Nm (13.6 lbs-ft)
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • 11 mm socket
  10. Bleed the RH front caliper.
    1. Remove the RH front caliper inner bleed valve cover, and then install the fluid catcher.
    2. Open the inner bleed valve and watch the fluid as it flows out of the caliper.
    3. In Toolbox, click on the Actions/Autodiag tab, and then search for "Bleed RH".
    4. Click PROC_ESP_FRONT-R-REAR-L_BRAKE-BLEEDvia Toolbox: (link), click Run and allow the routine to complete.
    5. Close the bleed valve when the pump stops, or when clean fluid without bubbles flows out of the caliper.
    6. Make sure that the reservoir does not go empty, or that the catch bottle does not overfill.
    7. Repeat step 10.b through step 10.f until clean fluid without bubbles flows out of the caliper.
    8. Remove the fluid catcher, and then torque the RH front caliper bleed valve and install the valve cap.
      18.5 Nm (13.6 lbs-ft)
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • 11 mm socket
  11. Bleed the RH rear caliper.
    1. Remove the RH rear caliper bleed valve cover, and then install the fluid catcher.
    2. Open the bleed valve and watch the fluid as it flows out of the caliper.
    3. In Toolbox, click on the Actions/Autodiag tab, and then search for "Bleed".
    4. Click PROC_ESP_FRONT-L-REAR-R_BRAKE-BLEEDvia Toolbox: (link), click Run and allow the routine to complete.
    5. Close the bleed valve when the pump stops, or when clean fluid without bubbles flows out of the caliper.
    6. Make sure that the reservoir does not go empty, or that the catch bottle does not overfill.
    7. Repeat step 11.b through step 11.f until clean fluid without bubbles flows out of the caliper.
    8. Remove the fluid catcher, and then torque the RH rear caliper bleed valve and install the valve cap.
      10 Nm (7.4 lbs-ft)
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • 11 mm socket
  12. Bleed the LH rear caliper.
    1. Remove the LH rear caliper bleed valve cover, and then install the fluid catcher.
    2. Open the bleed valve and watch the fluid as it flows out of the caliper.
    3. In Toolbox, click on the Actions/Autodiag tab, and then search for "Bleed".
    4. Click PROC_ESP_FRONT-R-REAR-L_BRAKE-BLEEDvia Toolbox: (link), click Run and allow the routine to complete.
    5. Close the bleed valve when the pump stops, or when clean fluid without bubbles flows out of the caliper.
    6. Make sure that the reservoir does not go empty, or that the catch bottle does not overfill.
    7. Repeat step 12.b through step 12.f until clean fluid without bubbles flows out of the caliper.
    8. Remove the fluid catcher, and then torque the LH rear caliper bleed valve and install the valve cap.
      10 Nm (7.4 lbs-ft)
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • 11 mm socket
  13. Turn off and remove the pressure brake bleeder kit from the vehicle.
  14. Check the brake fluid level and top off as necessary.
  15. Install the service brake reservoir cap.
  16. Remove the absorbent material from underneath the brake booster assembly and the reservoir area.
  17. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Chassis > Procedures > ESP Post Replacement > Corner Stiffness Test, click Run, and allow the routine to complete.
  18. Press the brake pedal several times to verify proper feel and action.
  19. Disconnect the laptop. See Toolbox 3 (Connect and Disconnect).
  20. Exit Service Mode. See Service Mode.
  21. Install the front aero shield panel. See Panel - Aero Shield - Front (Remove and Replace).
  22. Install all the four wheels. See Wheel Assembly (Remove and Install).
  23. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  24. Install the HEPA filter assembly. See HEPA FILTER (Remove and Replace).
  25. Remove the locking steering wheel tool.
  26. Raise the LH front window and close the LH front door.
  27. Remove the vehicle from the lift.
  28. Perform a road test to make sure there is proper pedal feel and brake performance.
    Informational PurposesAn informational icon, calling your attention
    Note
    Add test drive correction code 00040100 as a separate activity to the Service Visit.