09/04/2024 20:02:31

Desiccant (Remove and Replace)

Correction code 18202002 0.60 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.

  • 2024-03-19: Added A/C compressor oil density note.
  • 2023-04-05: Updated A/C oil type to be used with reference to Fluids and Capacities for A/C oil specifications.
  • 2024-03-01: Updated the way of performing the routines from using Toolbox to using the touchscreen.
  • 2024-04-02: Added reminding of checking the pressure of A/C system before opening the accumulator.
  • 2024-04-07: Added reminding of wearing PPEs.
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
Model Y thermal management components operate under very tight specifications and can malfunction if Service procedures are not carefully followed. DO NOT rely on past experience with other thermal management systems; read through the Service Manual and do not deviate from the instructions.

Torque Specifications

Table 1. Torque Specifications: Desiccant (Remove and Replace)
Description Torque Value Recommended Tools Reuse/Replace Notes
Accumulator dust cap Hand-tight
  • Torx T30 socket
  • 3 in extension
  • Ratchet/torque wrench
Replace

Remove

  1. Remove the HEPA filter assembly. See Assembly - Filter - HEPA (Remove and Install).
  2. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  3. Place the vehicle in Service Mode by using the touchscreen. See Service Mode.
  4. Unlock the vehicle gateway. See Gateway (Unlock).
  5. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Refrigerant System > Start Thermal Fill Drain (Refrigerant only), click Run, and allow the routine to complete.
  6. Disconnect the 12V/LV power. See 12V/LV Power (Disconnect and Connect).
  7. Recover the A/C refrigerant. See Recovery.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Make sure there is no pressure in the A/C system before performing the following steps.
  8. Remove A/C hoses from the vehicle.
  9. Carefully depress the schrader valves (x2) to release vacuum from A/C lines.
  10. If present, remove and discard the dust cap from the accumulator.
    Tip: Use of the following tool(s) is recommended:
    • Torx T30 socket
    • 3 in extension
    • Ratchet/torque wrench
  11. Use snap ring pliers to remove and discard the accumulator cap snap ring.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Please ensure to wear the Face Shield throughout the entire process to prevent foreign objects from flying out.
  12. Use long nose locking pliers to remove and discard the accumulator cap.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Please ensure to wear the Face Shield throughout the entire process to prevent foreign objects from flying out.
  13. Use needle nose pliers to remove the desiccant bag from the accumulator.
  14. Weigh the desiccant bag. This is considered the "wet weight."
  15. Determine the "dry weight" of the desiccant bag: Inspect the bag for a label that contains the Part Number (P), Serial Number (S), and Dry Weight (W). If the label is missing, or if the dry weight is not visible, assume the dry weight is 90.4 grams.
  16. Subtract the dry weight from the wet weight. This is the amount of oil that must be added to the system in addition to the oil that was removed during refrigerant recovery. Note this amount for later.

Install

  1. Install the desiccant bag in the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the tab on the desiccant bag faces upward.
  2. Lubricate the new accumulator cap O-rings with the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications. Then install the cap on the accumulator.
  3. Use the snap ring pliers to install the new accumulator cap snap ring.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Please ensure to wear the Face Shield throughout the entire process to prevent foreign objects from flying out.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure the snap ring is fully seated in the groove on the inside of the accumulator bore.
  4. Hand-tighten the new dust cap to the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Screw the dust cap until it bottoms out on the accumulator.
    Tip: Use of the following tool(s) is recommended:
    • Torx T30 socket
    • 3 in extension
    • Ratchet/torque wrench
  5. Install A/C hoses to the vehicle.
  6. Initiate and complete the vacuum leak test, then return to this procedure. See Vacuum Leak Test and Oil Injection.
  7. Remove the low side AC hose from the supermanifold to HVAC AC line assembly.
  8. Inject the amount of oil that was lost to:
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    DO NOT forget to inject the amount of oil that was lost to removal of the old desiccant bag. Failure to do so might cause catastrophic damage to the thermal system.
    Informational PurposesAn informational icon, calling your attention
    Note
    For calculations, both ND-11 and RB100EV compressor oils have a density of 0.98 grams/ml at 15°C.
    • Given a value in grams, divide by 0.98 to find the value in ml (milliliters or cc).
    • Given a value in ml (milliliters or cc), multiply by 0.98 to find the value in grams.
  9. Install the low side AC hose to the supermanifold to HVAC AC line assembly.
  10. Recharge the A/C refrigerant. See Recharge.
  11. Connect the 12V/LV power. See 12V/LV Power (Disconnect and Connect).
  12. Unlock the vehicle gateway. See Gateway (Unlock).
  13. On the touchscreen, select Thermal > Sensors and Valves > Run Heat Pump Commissioning, click Run, and allow the routine to complete.
  14. Select Thermal > Actions > Test Thermal Performance, click Run, and allow the routine to complete.
  15. Select Test HVAC Performance, click Run, and allow the routine to complete.
  16. Disable Service Mode. See Service Mode.
  17. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  18. Install the HEPA filter assembly. See Assembly - Filter - HEPA (Remove and Install).