2025-09-12

Desiccant (Model Y L) (Remove and Replace)

Correction code 18260100302 FRT 0.42 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and FRT listed above 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. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

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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.
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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.
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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 correction within the same activity to the Service Visit.

Remove

  1. Set up the AC machine.
  2. Unlock the vehicle gateway. See Gateway (Unlock).
  3. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN-REFRIGERANTvia Toolbox:(link)
  4. Remove the HEPA filter assembly. See HEPA Filter Assembly (Remove and Replace).
  5. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  6. Recover the A/C refrigerant. See A/C Refrigerant (Recovery and Recharge) (Restore).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Make sure there is no overpressure 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.
  7. On the touchscreen, make sure that the refrigerant system pressure is at atmospheric level (approx. 1 bar).
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    Note
    On the touchscreen, touch Service Mode > Thermal > Refrigerant System.
  8. Power off the vehicle from the center display.
    Informational PurposesAn informational icon, calling your attention
    Note
    On the touchscreen, touch Controls > Safety > Power Off > Power Off.
  9. Remove A/C machine hoses from the vehicle.
  10. Carefully depress the Schrader valves (x2) to level out any pressure difference between the A/C system pressure and the actual ambient atmospheric pressure.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure to depress both Schrader valves. Failure to do so may result in injury.
  11. Remove the frunk reinforcement beam. See Beam - Reinforcement - Frunk (Remove and Replace).
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    Note
    It is not necessary to separate the isolation brackets from the frunk reinforcement beam.
  12. Use snap ring pliers to remove and discard the desiccant snap ring.
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    Warning
    Wear the Face Shield throughout the entire process to protect against foreign objects flying out under pressure.
    Informational PurposesAn informational icon, calling your attention
    Note
    Install the slide hammer onto the desiccant, then tap inward to separate the snap ring. If the snap ring cannot be disassembled after tapping, use the slide hammer to press the desiccant inward forcefully to separate the snap ring. Request assistance if necessary.
  13. Use the slide hammer 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).
  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. Lubricate the new desiccant bag with the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications.
  2. Install the desiccant bag in the accumulator.
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    Note
    Make sure the tab on the desiccant bag points upward.
  3. Use the snap ring pliers to install the new desiccant.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Wear the Face Shield throughout the entire process to protect against foreign objects flying out under pressure.
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    Note
    Make sure the snap ring is fully seated in the groove on the inside of the accumulator bore.
  4. Install the frunk reinforcement beam. See Beam - Reinforcement - Frunk (Remove and Replace).
  5. Perform the vacuum leak test and oil injection, and A/C refrigerant recharge. See A/C Refrigerant (Recovery and Recharge) (Restore).
    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. Install the HEPA filter assembly. See HEPA And Carbon Filters (Remove and Replace).
  7. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  8. Unlock the vehicle gateway. See Gateway (Unlock).
  9. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_STOP-THERMAL-FILL-DRAINvia Service Mode:
    • Thermal ➜ Actions ➜ Stop Thermal Fill/Drain
    • Thermal ➜ Coolant System ➜ Stop Coolant Fill/Drain
    • Thermal ➜ Refrigerant System ➜ Stop Refrigerant Fill/Drain
    via Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Stop Coolant Fill/Drain
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Stop Coolant Fill/Drain
    via Toolbox:(link)
  10. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): TEST-SELF_VCFRONT_X_HEAT-PUMP-COMMISSIONINGvia Service Mode:Thermal ➜ Refrigerant System ➜ Commission Heat Pumpvia Service Mode Plus:Drive Inverter ➜ Front Drive Inverter Replacement ➜ Heatpump commissioningvia Toolbox:(link)
  11. Exit Service Mode. See Service Mode.
  12. Raise the LH front window and close the LH front door.