25/07/2023 11:49:13

Air Suspension - Pressurize/Depressurize - Full System

Correction Code 31101500

  • 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_DEFLATE-ALL, 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 8. To depressurize the system 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. Using Toolbox 3:
    1. Select the Actions tab and search for "TAS deflate component".
    2. Select the ODIN routine TAS Deflate ComponentPROC_TAS_X_DEFLATECommon/tasks/PROC_TAS_X_DEFLATEChassisChassis / Suspension - Deflate AllService Mode Service Plus Factory Mode Developer , and then click the link of the routine.
    3. Select ALL from the menu.
    4. Click RUN, and allow the routine to complete.
  7. Discard the following steps with instructions for Service UI.
  8. Enable Service Mode through the touchscreen. See Service Mode.
  9. Unlock the vehicle gateway for diagnostic communication. See Gateway Unlock.
  10. On the vehicle touchscreen, touch Service Mode (spanner icon).
  11. Touch Chassis (damper icon) and then touch Suspension.
  12. 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
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. If the fill point is not accessible, access the fill point.
    Vehicle Fill Point Location
    Model S (vehicles manufactured before November 2013) Schrader valve on the shock tower brace
    Model S (vehicles manufactured November 2013 and later) Schrader valve on air suspension reservoir
    • Vehicles with a Schrader valve fill point:
      1. Remove the center underhood apron. See .
      2. Remove the safety cap from the Schrader valve. The fill point is the Schrader valve, either on the reservoir or on the RH shock tower brace.
        Schrader Valve on ReservoirSchrader Valve on RH Shock Tower Brace




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. Turn the T-handle fully counter-clockwise.
    • 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 displays 500 to 1500 psi.


    • If the cylinder pressure is too low: Refill the cylinder or use a different cylinder.
    • If the cylinder pressure is too high: Report this situation to your shop safety manager immediately.
  7. For models with Conti Air Suspension, continue to the next step. For models with Tesla Air Suspension, go to step 19.
  8. Slowly turn the red knob of the regulator counter-clockwise until the line pressure gauge displays 19-21 bar (275-305 psi).


  9. Connect the Nitrogen Schrader valve coupler quick-disconnect adapter to the reservoir fill valve.
  10. Turn the black handle on the short valve body to the open position.
    Informational PurposesAn informational icon, calling your attention
    Note
    The reservoir begins to fill.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure that the pressure gauge continues to display 19-21 bar (275-305) psi.
  11. Slowly lower the vehicle to the ground, but do not remove it from the lift.
  12. Turn the black handle on the short valve body to the close position.
  13. In Toolbox 3, click the Actions tab, type "Level Continental Air Suspension" in the search field, click PROC_EAS_X_LEVEL-TO-HEIGHT, set Target Height to 5, click Run, and allow the routine to complete.
  14. Disconnect the Nitrogen Schrader valve coupler quick-disconnect adapter from the reservoir fill valve.
  15. Install the cap onto the reservoir valve.
  16. Using Toolbox 3, select the Actions tab, type "Measure EAS Air Mass" in the search field, click PROC_EAS_X_MEASURE-AIR-MASS, click Run and allow the routine to complete.
  17. Using Toolbox 3, select the Actions tab, type "Continental Air Suspension Finish Service" in the search field, click PROC_EAS_X_FINISH-SERVICE, click Run and allow the routine to complete.
  18. Continue to step29.
  19. Remove the cap from the air suspension reservoir valve.
  20. Connect the Nitrogen fill kit to the Schrader valve adapter.
  21. Open the main valve on the Nitrogen tank.
  22. Slowly open the pressure regulator valve on the Nitrogen tank and adjust the pressure to 19-21 bar (275 - 305 psi).
  23. Open the lever on the hose adapter to start the supply of Nitrogen to the reservoir.
    Informational PurposesAn informational icon, calling your attention
    Note
    Nitrogen is automatically filled up to a pressure of 20 bar (290 psi).
    Informational PurposesAn informational icon, calling your attention
    Note
    Allow some time to equally settle the pressure between the set Nitrogen pressure and the vehicle reservoir.
  24. Close the valve on the hose adapter at the reservoir.
  25. Close the main valve on the Nitrogen tank.
  26. Close the pressure regulator valve on the Nitrogen tank.
  27. Disconnect the Nitrogen tank hose from the reservoir.
  28. Install the cap onto the air suspension reservoir valve.
  29. Lower the vehicle, see Raise Vehicle - 2 Post Lift.
  30. Pressurize the air suspension system using Toolbox 3 (next step) or Service Mode (skip to step 34)
  31. Using Toolbox 3:
    1. Select the Actions tab and search for "TAS service mode".
    2. Select the ODIN routine TAS Enter Normal Run ModePROC_TAS_X_ENTER-NORMAL-MODECommon/tasks/PROC_TAS_X_ENTER-NORMAL-MODEChassis, and then click the link of the routine.
    3. Click RUN, and allow the routine to complete.
  32. On the touchscreen, turn off "Jack mode".
  33. Skip to step 37.
  34. On the vehicle touchscreen, touch Service Mode (spanner icon).
  35. Touch Chassis (damper icon) and then touch Suspension.
  36. Touch Normal.
    Informational PurposesAn informational icon, calling your attention
    Note
    Any deflated dampers will automatically inflate
  37. 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.