how to solve Tesla Model S Original (2012-2020) air suspension problems

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

581 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and repair air suspension issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before working on suspension components.

Symptoms

•Check air suspension warning message displayed on the dashboard
•Vehicle remains at a fixed height regardless of settings
•Uneven ride height from side to side or front to back
•Air compressor running excessively or not at all
•Air suspension system leaks resulting in a noticeable drop in height over time

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics (OBD-II) for error codes related to the air suspension.
2
Inspect the air suspension components visually for any signs of damage or wear, including airbags and the compressor.
3
Check the air compressor operation by listening for unusual sounds or lack of operation when attempting to adjust height.
4
Inspect the air lines and fittings for leaks using soapy water to identify any bubbling at connection points.
5
Test the height sensors for proper function by measuring the voltage output while the vehicle is at different heights.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Torque wrench
•Air line removal tool
•Socket set
•Jack and jack stands

Parts Required

•Air suspension air bags
•Air compressor (if necessary)
•Height sensors (if necessary)

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Symptoms

•Check air suspension warning message displayed on the dashboard

•Vehicle remains at a fixed height regardless of settings

•Uneven ride height from side to side or front to back

•Air compressor running excessively or not at all

•Air suspension system leaks resulting in a noticeable drop in height over time

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics (OBD-II) for error codes related to the air suspension.
2
Inspect the air suspension components visually for any signs of damage or wear, including airbags and the compressor.
3
Check the air compressor operation by listening for unusual sounds or lack of operation when attempting to adjust height.
4
Inspect the air lines and fittings for leaks using soapy water to identify any bubbling at connection points.
5
Test the height sensors for proper function by measuring the voltage output while the vehicle is at different heights.

Solution

1. Preparation

Gather all necessary tools and parts.
Safely lift the vehicle using a jack and secure it with jack stands.
Disconnect the vehicle battery to prevent electrical issues during the repair.

2. Inspect and Replace Air Bags

Sub-steps:
1. Locate the air suspension air bags under the chassis.
2. Disconnect the air lines from the air bags using a line removal tool.
3. Unbolt the air bags from their mounting points.
4. Install new air bags by reversing the removal process; ensure they are securely bolted.
5. Reconnect the air lines and ensure they are tight.

3. Replace or Repair Air Compressor

Sub-steps:
1. Remove the air compressor assembly by unbolting it from its housing.
2. Disconnect the electrical connectors and air lines from the compressor.
3. If repairing, inspect the compressor for internal wear and replace any damaged components (e.g., relay, fuse).
4. For replacement, install the new compressor by connecting it to the electrical and air lines and securing it in place.
5. Test the compressor operation before reassembling the vehicle.

4. Replace Height Sensors

Sub-steps:
1. Locate the height sensors on the suspension arms.
2. Disconnect the electrical connectors and unbolt the sensors.
3. Install new height sensors by securing them in place and reconnecting the electrical connectors.
4. Calibrate the height sensors if necessary according to manufacturer specifications.