how to fix a Tesla Model S Original (2012-2020) that keeps losing connectivity

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

502 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical components to prevent short circuits.

Symptoms

•Loss of mobile network connectivity
•Inability to access over-the-air updates
•Wi-Fi connection drops intermittently
•Navigation system may not function properly
•Inconsistent access to streaming services

Diagnostic Steps

1
Check the software version of the infotainment system for any available updates.
2
Inspect the SIM card for proper installation and physical damage.
3
Test the vehicle’s Wi-Fi connection by attempting to connect to known networks.
4
Run a network diagnostic test through the Tesla settings.
5
Verify the status of the vehicle's LTE and Wi-Fi antennas.
6
Reset the infotainment system using the appropriate button combination.

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

•Flathead screwdriver
•Phillips screwdriver
•Torque wrench

Parts Required

•Replacement SIM card
•New LTE antenna

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the software version of the infotainment system for any available updates.
2
Inspect the SIM card for proper installation and physical damage.
3
Test the vehicle’s Wi-Fi connection by attempting to connect to known networks.
4
Run a network diagnostic test through the Tesla settings.
5
Verify the status of the vehicle's LTE and Wi-Fi antennas.
6
Reset the infotainment system using the appropriate button combination.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked and the key fob is removed.
Disconnect the 12V battery to avoid electrical issues during repairs.

2. Software Update

Navigate to the "Software" section in the main menu.
Check for updates and install any available software patches.
Reboot the infotainment system after the update process is complete.

3. Inspect SIM Card

Access the SIM card slot, typically located in the glove box or under the center console.
Remove the SIM card and inspect it for damage.
Reinsert the SIM card ensuring it is seated properly or replace it with a new one if necessary.

4. Check Network Connections

Go to the "Settings" menu and select "Wi-Fi".
Ensure the Wi-Fi is turned on and try connecting to a different network.
Test connectivity by accessing an app that requires internet access.

5. Antenna Inspection

Remove the rear panel or interior trim where the LTE antenna is located.
Inspect the antenna connections for wear or damage.
If damaged, replace the LTE antenna with a new one.

6. Reset Infotainment System

Hold down both scroll wheels on the steering wheel until the screen goes blank.
Wait for the system to reboot.
Check if connectivity issues persist after the reset.