why does my Tesla Model S Original (2012-2020) show 'low tire pressure' when it's not

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

591 words

Problem Statement

Learn how to diagnose and fix the low tire pressure warning in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is parked securely on a flat surface before beginning any work.
•Use proper lifting equipment if working under the vehicle.

Symptoms

•Low tire pressure warning displayed on the dashboard
•Tire pressure reading may show inconsistent values
•Possible loss of traction control or stability control messages
•TPMS light illuminated
•No visible signs of tire damage or deflation

Diagnostic Steps

1
Scan the vehicle's system using the Tesla diagnostic tool to check for any error codes related to the TPMS.
2
Visually inspect all tires for signs of damage, punctures, or leaks.
3
Check the actual tire pressure using a reliable tire pressure gauge to confirm readings.
4
Verify if the TPMS sensors are functioning correctly by cycling through the vehicle's tire pressure monitoring display.
5
Inspect the TPMS module for any loose connections or damage.
6
Check the firmware version of the vehicle and ensure it is up to date.

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

•Tire pressure gauge
•OBD-II scanner
•Laptop or device for software updates
•Lug wrench
•Valve core tool
•Tire mounting machine or manual tire lever
•Torque wrench

Parts Required

•TPMS sensors
•Valve stems

Related Faults

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Diagnostic Steps

1
Scan the vehicle's system using the Tesla diagnostic tool to check for any error codes related to the TPMS.
2
Visually inspect all tires for signs of damage, punctures, or leaks.
3
Check the actual tire pressure using a reliable tire pressure gauge to confirm readings.
4
Verify if the TPMS sensors are functioning correctly by cycling through the vehicle's tire pressure monitoring display.
5
Inspect the TPMS module for any loose connections or damage.
6
Check the firmware version of the vehicle and ensure it is up to date.

Solution

1. Preparation

Gather required tools: tire pressure gauge, OBD-II scanner (if applicable), and a laptop or device for software updates.
Ensure the vehicle is parked on a level surface and the tires are cold for accurate pressure readings.

2. Reset TPMS

Access the vehicle settings via the touchscreen.
Navigate to "Service" and select "TPMS Reset."
Follow the on-screen prompts to reset the system.

3. Replace TPMS Sensors (if necessary)

Remove Tire:
- Use a lug wrench to loosen and remove the tire's lug nuts.
- Remove the wheel from the hub.
Remove Old TPMS Sensor:
- Deflate the tire by removing the valve core using a valve core tool.
- Separate the tire from the rim using a tire mounting machine or manual tire lever.
- Unscrew the old TPMS sensor from the valve stem.
Install New TPMS Sensor:
- Install the new TPMS sensor onto the valve stem.
- Ensure the sensor is secured and properly sealed.
- Reassemble the tire onto the rim and inflate it to the correct pressure.
Reinstall Tire:
- Mount the tire back onto the vehicle and hand-tighten the lug nuts.
- Use a torque wrench to tighten the lug nuts to the manufacturer’s specifications (typically around 80-100 lb-ft).

4. Update Vehicle Firmware (if necessary)

Connect the vehicle to Wi-Fi.
Navigate to "Software" on the touchscreen.
Check for updates and follow the prompts to install any available firmware updates.