2025-01-23

Desiccant (Remove and Replace)

Correction code 1840010052 FRT 0.25 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.

Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
HFO-R1234yf and R134a are considered hazardous and, if handled incorrectly, can cause serious injury. Suitable personal protective equipment, consisting of face and eye protection, safety glasses, face shield, heat-proof gloves, chemical resistant gloves, rubber boots and apron or waterproof overall must be worn when carrying out operations on the air conditioning system.
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
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.
Informational PurposesAn informational icon, calling your attention
Note
This procedure requires the A/C Refrigerant (Recovery and Recharge) procedure to be performed. If not already automatically added to the Service Visit, add correction code 18200102 as a separate activity to the Service Visit.
  • 1081547-00-B SMALL SLIDE HAMMER
  • 1985068-00-A FEMALE TO FEMALE THREADED ADAPTER

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
 Replace

Remove

  1. Set up the AC machine.
  2. Unlock the vehicle gateway. See Gateway (Unlock).
  3. 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) > Run, and allow the routine to complete.
  4. Remove the HEPA filter assembly. See SERVICE KIT - HEPA AND CARBON FILTERS (Remove and Replace).
  5. Disconnect the LV battery. See LV Power (Disconnect and Connect).
  6. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  7. Recover the A/C refrigerant. See A/C Refrigerant (Recovery and Recharge) (Maintenance).
    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. Failure to do so may result in damage to components and/or personal injury.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    HFO-R1234yf and R134a are considered hazardous and, if handled incorrectly, can cause serious injury. Suitable personal protective equipment, consisting of face and eye protection, safety glasses, face shield, heat-proof gloves, chemical resistant gloves, rubber boots and apron or waterproof overall must be worn when carrying out operations on the air conditioning system.
  8. If present, remove and discard the dust cap from the accumulator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use of the following tool(s) is recommended:
    • Torx T30 socket
    • 3 in extension
  9. 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.
  10. Thread the female to female threaded adapter onto the slide hammer, thread adapter onto the accumulator cap, and then use the slide hammer to remove the accumulator cap.
    Informational PurposesAn informational icon, calling your attention
    Note
    Discard the accumulator cap after removal.
  11. Use needle nose pliers to remove the desiccant bag from the accumulator.
  12. Weigh the desiccant bag. This is considered the "wet weight."
  13. 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.
  14. 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.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use of the following tool(s) is recommended:
    • Torx T30 socket
    • 3 in extension
  5. Perform the vacuum leak test and oil injection, and A/C refrigerant recharge. See A/C Refrigerant (Recovery and Recharge) (Maintenance).
    Informational PurposesAn informational icon, calling your attention
    Note
    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.
  6. Connect the LV battery. See LV Power (Disconnect and Connect).
  7. Unlock the vehicle gateway. See Gateway (Unlock).
  8. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Sensors and Valves > Run Heat Pump Commissioning > Run, and close once the routine is passed.
  9. Exit Service Mode. See Service Mode.
  10. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  11. Install the HEPA filter assembly. See SERVICE KIT - HEPA AND CARBON FILTERS (Remove and Replace).