Troubleshooting a Wall Connector

Wall Connectors can be identified by the part number on the side label, which will be displayed as TPN: 1529455-##-#. Customers should take a photo of the side label for their records.

To troubleshoot your Wall Connector, you will need the Quickstart Guide, your mobile device and access to Wall Connector.

Tesla App for Wall Connector

Use the Tesla app to control, schedule and get data on your Wall Connector, whether you own a Tesla vehicle or a non-Tesla electric vehicle. To complete your Wall Connector setup, follow the recommended steps to register your Wall Connector and connect it to your home Wi-Fi network.

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Commissioning and Connecting to Wi-Fi

Below is a step-by-step guide for assistance with the Quickstart Commissioning and Wi-Fi Connectivity process. If you have already registered and connected your Wall Connector in the Tesla app, there is no need to continue below.

Wall Connectors automatically receive firmware updates when connected to Wi-Fi. The first step for all troubleshooting is to ensure your Wall Connector is commissioned correctly so that it can charge properly and download the most recent firmware for the best performance and latest features.

Note: Before following the steps below, have your Quickstart Guide and home Wi-Fi network password ready and ensure your Wall Connector is unplugged from your vehicle. Keep your Wall Connector unplugged from your vehicle throughout the entire commissioning process. If you lost your password and cannot access your Quickstart Guide, use the Diagnose button below. Have your Tesla part number and Tesla serial number available.

Diagnose

To commission your Wall Connector, follow these steps:

  1. Prompt your Wall Connector to broadcast its Wi-Fi signal.
  • Go to your circuit breaker panel and turn off the breaker for five seconds. During this time, note the amperage for the breaker your electrician has installed for the unit.
  • If the circuit breaker is not accessible, press and hold the cable handle button for five seconds to prompt Wall Connector to broadcast its Wi-Fi signal. Once all the lights turn on, you can release the button.
  1. Ensure Wall Connector is broadcasting.
  • For the entirety of this process, stand next to your Wall Connector. After the power cycle or button press above is completed, your Wall Connector will display a pulsing green LED and broadcast its own Wi-Fi access point for up to fifteen minutes, depending on the firmware version.
  1. Using your mobile device, find and select the Wall Connector’s Wi-Fi network.
  • On your mobile device, under ‘Settings,’ locate and select your Wall Connector’s Wi-Fi named TeslaWallConnector_XXXXXX. Then, connect your mobile device, tablet or laptop to your Wall Connector.
  • If your Wall Connector network is not displayed, return to step 1. If you turn off the breaker, return to your Wall Connector to ensure the lights are turned off. Then, go turn the breaker back on and come back to your Wall Connector.
  1. Connect to your Wall Connector’s Wi-Fi
  • Enter the 12-digit WPA2 password on the front of the Wall Connector Quickstart guide to connect your mobile device or other device to your Wall Connector. This password is case sensitive. If you have connected to the TeslaWallConnector_XXXXXX network previously, you may not be prompted for a password and your device may connect to the network automatically.
  • If you have misplaced your password and your Quickstart guide is unavailable, use the diagnostic tool. Have your Tesla part number and Tesla serial number available.
  • Note: If the device being used gives an alert that the Wi-Fi is not connected to the internet, this is OK and expected. Continue by staying connected to your Wall Connector’s Wi-Fi. If the device automatically reverts to a known Wi-Fi connection, it may be necessary to turn on airplane mode or delete the home network from the device until commissioning is complete.
  1. Scan the QR code with your mobile device camera or enter the IP address below into any web browser.
  • While connected to your Wall Connector Wi-Fi, scan the above QR code with your mobile device camera, or manually enter IP address http://192.168.92.1 into your web browser to set up your Wall Connector, including connecting it to your local Wi-Fi.
  • Note: Ensure that you are using a web browser - such as Google Chrome or Safari - and not a search app.
  • A page should pop up that has the below options:
  1. Next, go to ‘Installation.’
  • From the country drop-down, select your country of residence. From the circuit breaker drop-down, confirm and select the circuit breaker size your Wall Connector is installed on and hit ‘Save.’
  1. Connect to your Wi-Fi to complete setting up your Wall Connector.
  • If the front page of the wizard fails to load fully again, amend the URL to http://192.168.92.1/wifi and tap ‘Go.’
  • From the front page, select ‘Wi-Fi’ and wait for your home Wi-Fi to populate. If this does not appear, tap ‘Rescan.’ You’ll be prompted to enter your home network password.
  • Once connected to your home Wi-Fi, a page will appear listing your network details. To confirm your Wall Connector is fully connected, ensure there are checkmarks next to ‘Connected to Tesla’ and ‘Connected to Internet.’
  • If you do not see your network on the list after hitting ‘Rescan’ or do not get checkmarks confirming your connections after attempting to connect, review your network security settings to ensure the below settings are true:
    • 2.4 GHz Wi-Fi: No 5.0 or 6.0 GHz shared networks
    • WPA2 security: No WPA2/3 shared networks
    • No MAC address filtering
    • No content filtering
  • Check with your internet service provider or router manufacturer as needed to verify these security and network settings.

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Offline Firmware Updates

The best way to keep your Wall Connector up to date is to connect to local Wi-Fi. If this is not possible, firmware updates can be manually installed by following these steps:

  1. Download the firmware file.
    Save the file locally on the device you will be using to connect to your Wall Connector. We recommend using a mobile device, tablet or laptop. Download below:
    Firmware 23.8.2
  2. Connect to your Wall Connector Wi-Fi access point.
  • Follow steps one through six above to commission the installation. The network name (SSID) and password (WPA2) details can be found on the Quickstart guide that came with your Wall Connector.
  • Note: If the Quickstart guide is unavailable and you cannot locate your password, use the diagnostic tool. Have your Tesla part number and Tesla serial number available.
  1. Navigate to update page.
  1. Install the firmware file.
  • Select ‘Choose File’ and then upload the Wall Connector firmware file. Click ‘Upload’ and wait for up to one minute.
  1. Confirm the firmware update.
  • A success message will be displayed if the manual firmware update is successful. Your Wall Connector may reboot.
  • If a failure message appears, power cycle your Wall Connector by turning the circuit breaker off and back on again and then try uploading the firmware update again.

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Troubleshooting Wall Connector Fault Codes

The table below displays common fault codes and their solutions. Use these codes to diagnose the issue with your Wall Connector.

All red blink codes pause for one second, and then repeat.

Light Status Issue Solution
No lights Power supply issue, charging disabled Verify that the power supply is turned on. If the issue persists, have an electrician remove the Wall Connector from the wirebox and confirm that voltage is present at the terminal block using a multimeter. Record voltage readings:

1. Line 1 to Line 2
2. Line 1 to Ground
3. Line 2 to Ground
Solid red Internal fault, charging disabled Turn the circuit breaker off, wait 5 seconds, and turn it back on. If solid red light remains, document part number and serial number, then contact Tesla.
One red blink Ground fault circuit interruption due to unsafe current path, charging disabled. Inspect the handle, cable, Wall Connector and vehicle charge port for damage or signs of water ingress. Have an electrician check that earth ground is not directly connected to a conductor wire in the branch circuit.
Two red blinks Ground assurance fault, high ground resistance detected, charging disabled. Verify that the Wall Connector is properly grounded. The Ground connection must be bonded in the upstream power supply for proper operation. Check all physical connections, including the wirebox terminals, electrical panel(s), and junction boxes. In residential power supplies, check the bond between Ground and neutral at the main panel. If connected to a step- down transformer, contact the transformer's manufacturer for direction on how to bond the ground connection.
Three red blinks High temperature detected; charging limited or disabled Connect Wall Connector to Wi-Fi so that firmware can update to most recent version.
Check the faceplate and cable handle for excessive warmth. Have an electrician remove the Wall Connector from the wirebox and verify that the conductors used are sized correctly and that the terminal block is torqued to specification.
Three red blinks, with green streaming High temperature detected; charging is limited Charging amperage has been reduced due to high temperatures.
Connect Wall Connector to Wi-Fi so that firmware can update to most recent version.
Four red blinks Internet connection lost, online features disabled Check for objects that could interfere with the area's Wi-Fi signal strength. Confirm that the local Wi-Fi router is operational. If the Wi-Fi password was changed recently, follow the commissioning process on your mobile device to update the Wi-Fi settings.
Five red blinks Power-sharing communication issue, charging reduced Check for objects that could interfere with the area's Wi-Fi signal strength. Follow the commissioning process on your mobile device to re-link the Wall Connectors for power-sharing.
Six red blinks Overvoltage or poor grid quality detected, charging disabled Verify that the power supply is nominal 200-240 volts. If the issue persists, have an electrician remove the Wall Connector from the wirebox and confirm that voltage readings are as expected at the terminal block using a multimeter. Record voltage readings:

1. Line 1 to Line 2
2. Line 1 to Ground
3. Line 2 to Ground
Seven red blinks Vehicle overcurrent detected Reduce the vehicle's charge current setting. If the issue persists and the attached vehicle is manufactured by Tesla, record the vehicle's VIN and approximate time of the fault and contact Tesla. If the vehicle is not manufactured by Tesla, contact the vehicle's manufacturer.

Learn more about Wall Connector installations or how to replace a Wall Connector. If you have additional questions, contact Customer Support.

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Additional Resources

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