2026-03-05

Air Suspension - Pressurize/Depressurize - Full System

Correction Code 31101500

  • 2023-09-28: Added steps to enable and disable TAS service mode for deflation.
  • 2023-04-18: Updated step sequence to close lever on hose adapter before setting EAS leveling to High through Toolbox 3 to prevent EAS Air Mass measurement routine from failing.
  • 2023-03-21: Updated procedure and Toolbox 3 routines for vehicles with Electronic Air Suspension.
  • 2023-07-17: Updated procedure and Toolbox 3 routines.

Identify the vehicle's air suspension type

Model S vehicles can be equipped with different types of air suspension as follows:
  • Vehicles built before 11 April 2016 are equipped with Electronic Air Suspension (Conti)
  • Vehicles built on or after 11 April 2016 are equipped with Tesla Air Suspension (TAS)
Informational PurposesAn informational icon, calling your attention
Note
Make sure that you follow the correct procedures/steps that apply for the different types of air suspension.

Depressurize - Electronic Air Suspension (Conti)

  1. Position the vehicle on a 2-post lift, but do not raise the vehicle at this time.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Set the suspension to "High" or "Very High" to allow the vehicle to be positioned and supported correctly on a vehicle lift.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Activate "Jack" mode on the touchscreen before raising and supporting the vehicle.
  2. Connect a laptop with Toolbox 3 to the vehicle.
  3. Press the brake pedal to turn on the drive rails.
    Informational PurposesAn informational icon, calling your attention
    Note
    Leave the driver door open to keep the drive rails on for the remainder of this procedure.
  4. Raise and support the vehicle sufficiently to unload the suspension. See Raise Vehicle - 2 Post Lift.
  5. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox 3 (Connect and Disconnect).
  6. Unlock the vehicle Gateway for diagnostic communication. See Gateway Unlock.
  7. Select the Actions tab, type "EAS deflate all" in the search field, select the ODIN routine PROC_EAS_X_DEFLATEvia Toolbox: (link), click RUN and allow the routine to complete.
    Informational PurposesAn informational icon, calling your attention
    Note
    Select CompleteDeflate before running the routine.

Depressurize - Tesla Air Suspension (TAS)

  1. Position the vehicle on a 2-post lift, but do not raise the vehicle at this time.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Set the suspension to "High" or "Very High" to allow the vehicle to be positioned and supported correctly on a vehicle lift.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Activate "Jack" mode on the touchscreen before raising and supporting the vehicle.
  2. Raise and support the vehicle sufficiently to unload the suspension. See Raise Vehicle - 2 Post Lift.
  3. To depressurize the system: using Service Mode, proceed to step 10. To depressurize the system using Toolbox 3, perform the following steps:
    • Using Service Mode - Proceed to step 10.
    • Using Toolbox 3 - Perform the following steps.
  4. Connect a laptop to the diagnostic port of the vehicle, and then use Toolbox 3 to locally connect to the vehicle. See Toolbox 3 (Connect and Disconnect).
  5. Unlock the vehicle gateway for diagnostic communication. See Gateway Unlock.
  6. In Toolbox, click the Actions tab, type "TAS service mode" into the search field, click PROC_TAS_X_ENTER-SERVICE-MODEvia Toolbox: (link), click RUN, and allow the routine to complete.
  7. Click the Actions tab, type "TAS deflate component" into the search field, click PROC_TAS_X_DEFLATEvia Toolbox: (link)via Service Mode: Chassis ➜ Suspension ➜ Deflate, select ALL from the drop down menu, click RUN, and allow the routine to complete.
  8. Click the Actions tab, type "TAS service mode" into the search field, click PROC_TAS_X_ENTER-NORMAL-MODEvia Toolbox: (link), click RUN, and allow the routine to complete.
  9. The procedure is complete.
  10. Enable Service Mode through the touchscreen. See Service Mode.
  11. Unlock the vehicle gateway for diagnostic communication. See Gateway Unlock.
  12. On the vehicle touchscreen, touch Service Mode (spanner icon).
  13. Touch Chassis (damper icon) and then touch Suspension.
  14. Touch Service, and then touch Deflate All.

Nitrogen Refill

Special tools required for this procedure:

Part Number Description
1083876-00-A Air suspension Nitrogen filling kit (Americas, APAC)
1028154-01-A Nitrogen Refill kit (EMEA, except UK)
1028154-02-A Nitrogen Refill kit (UK only)
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Wear eye protection while performing this procedure.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Make sure the Nitrogen refill kit is working correctly. Faulty gauges or other equipment may cause damage or personal injury.
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
Use the Nitrogen refill kit to refill the air suspension reservoir. Do not use shop air, which might contain contaminants that could damage the air suspension system.
Table 1. Nitrogen Refill Kits
Portable Nitrogen Refill Kit With T-Handle Coupler Shop Nitrogen Refill Kit With Black-Handle Coupler




Vehicle Preparation

  1. Complete any air suspension component replacement procedures.
    Informational PurposesAn informational icon, calling your attention
    Note
    If any replacement procedures required disconnecting 12V power, reconnect 12V power.
  2. Press the brake pedal to turn on the drive rails.
    Informational PurposesAn informational icon, calling your attention
    Note
    Leave the driver door open to keep the drive rails on for the remainder of this procedure.
  3. Raise and support the vehicle sufficiently to unload the suspension. See Raise Vehicle - 2 Post Lift.
  4. Remove the center underhood apron. See Underhood Apron - Rear (Remove and Replace).
  5. Locate the fill point for the air reservoir, and then remove the cap from the Schrader valve.
      1. Vehicles manufactured before November 2013: Schrader valve on the shock tower brace.
      2. Vehicles manufactured November 2013 and later: Schrader valve on air suspension reservoir.

Nitrogen Fill Kit Attachment

  1. Turn the Nitrogen cylinder main valve fully clockwise to closed.
  2. Turn the red knob on the regulator fully clockwise to closed.
  3. Attach the Schrader valve coupler quick-disconnect adapter to the Nitrogen cylinder quick-disconnect. There are two types of adapters:
    • Portable Nitrogen fill kit uses an adapter with a T-handle coupler, a hose, a pressure gauge, and a red knob.
    • Shop Nitrogen fill kit uses an adapter with a short valve body and a black handle.


  4. Prepare the Schrader valve coupler:
    • T-handle coupler: Turn the red valve fully clockwise to close.
    • Black-handle coupler: Turn the black handle perpendicular to the valve body to close.
  5. Open the main valve on the Nitrogen cylinder by one turn counter-clockwise.
  6. Make sure that the cylinder pressure gauge is above 500 psi and below the maximum allowed limit for the bottle.
    Informational PurposesAn informational icon, calling your attention
    Note
    If the cylinder pressure is too low, use a different cylinder with sufficient pressure.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    If the cylinder pressure is too high, do not use the cylinder and report the situation to your shop safety manager.


  7. For models with Conti Air Suspension, perform the substeps below. For models with Tesla Air Suspension, go to step 8.
    1. Open the main valve on the Nitrogen tank.
    2. Slowly turn the red knob of the regulator counter-clockwise until the line pressure gauge displays 19-21 bar (275-305 psi).
    3. Connect the Nitrogen Schrader valve coupler quick-disconnect adapter to the reservoir fill valve.
    4. Turn the black handle on the short valve body to the open position to start the supply of Nitrogen to the reservoir..
      Informational PurposesAn informational icon, calling your attention
      Note
      Make sure that the pressure gauge continues to display 19-21 bar (275-305) psi.
    5. Slowly lower the vehicle to the ground, but do not remove it from the lift.
    6. Turn the black handle on the short valve body to the close position.
    7. In Toolbox 3, click the Actions tab, type "Level Continental Air Suspension" in the search field, click PROC_EAS_X_LEVEL-TO-HEIGHTvia Toolbox: (link), set Target Height to 5, click Run, and allow the routine to complete.
    8. Disconnect the Nitrogen Schrader valve coupler quick-disconnect adapter from the reservoir fill valve.
    9. Install the cap onto the reservoir valve.
    10. Using Toolbox 3, select the Actions tab, type "Measure EAS Air Mass" in the search field, click PROC_EAS_X_MEASURE-AIR-MASSvia Toolbox: (link), click Run and allow the routine to complete.
    11. Using Toolbox 3, select the Actions tab, type "Continental Air Suspension Finish Service" in the search field, click PROC_EAS_X_FINISH-SERVICEvia Toolbox: (link), click Run and allow the routine to complete.
  8. For models with Tesla Air Suspension, perform the substeps below. For models with Conti Air Suspension, go to step 9.
    1. Open the main valve on the Nitrogen tank.
    2. Slowly open the pressure regulator valve on the Nitrogen tank and adjust the pressure to 19-21 bar (275 - 305 psi).
    3. Connect the Nitrogen Schrader valve coupler quick-disconnect adapter to the reservoir fill valve.
    4. Turn the black handle on the short valve body to the open position to start the supply of Nitrogen to the reservoir..
      Informational PurposesAn informational icon, calling your attention
      Note
      Make sure that the pressure gauge continues to display 19-21 bar (275-305) psi.
    5. Turn the black handle on the short valve body to the close position.
    6. Close the main valve on the Nitrogen tank.
    7. Close the pressure regulator valve on the Nitrogen tank.
    8. Disconnect the Nitrogen tank hose from the reservoir.
    9. Install the cap onto the air suspension reservoir valve.
  9. Lower the vehicle, see Raise Vehicle - 2 Post Lift.
  10. Pressurize the air suspension system using Toolbox 3 (next step) or Service Mode (skip to step 13).
  11. Using Toolbox 3:
    1. Select the Actions tab and search for "TAS service mode".
    2. Select the ODIN routine PROC_TAS_X_ENTER-NORMAL-MODEvia Toolbox: (link), and then click the link of the routine.
    3. Click RUN, and allow the routine to complete.
  12. On the touchscreen, turn off "Jack mode".
  13. On the vehicle touchscreen, touch Service Mode (spanner icon).
  14. Touch Chassis (damper icon) and then touch Suspension.
  15. Touch Normal.
    Informational PurposesAn informational icon, calling your attention
    Note
    Any deflated dampers will automatically inflate
  16. Sit in the driver or front passenger seat, close all the doors, and confirm that the vehicle moves appropriately as the suspension height is adjusted through the touchscreen.