Toyota ERC & Eclipse ESN Radio Code Unlock Service (2026 -2027)

September 6, 2026

Toyota ERC & Eclipse ESN Radio Code Unlock Service (2026)

Eclipse car radios, especially models imported from Japan, use a security system called ESN (Eclipse Security Network). This system is designed to prevent radio theft and locks the unit in case of unauthorized removal or power interruption.
To make the unit operational again, a 6-digit ESN unlock code, generated from the 6-digit ESN serial number, must be entered.

Primary Method: Press and hold the Main and Navi/AV buttons on the radio unit simultaneously for a few seconds, or press these buttons multiple times. A new screen will appear, displaying the 6-digit ESN serial number (e.g., 3BFB42).
Alternative Method 1: On some devices, it may be necessary to press the Main and Info buttons together.
Alternative Method 2: Press and hold the main button on the navigation panel for a few seconds, and typically press the navigation key itself 5 times.
The received ESN serial number should be a six-character alphanumeric code (e.g., “3BFB42″, “40793F“).

The ERC system activates when the car battery is disconnected or the radio unit is removed from the vehicle. In this case, basic multimedia functions such as the radio, CD/DVD player, Bluetooth, and navigation are locked.
To make the unit operational again, an 8-digit ERC unlock code, generated from the 16-digit ERC serial number, must be entered.

Press and hold the main button on your navigation player (usually labeled “MENU”, “NAVI”, “DISP”, “INFO”, or it might be a Japanese character button).
While holding the main button, turn your parking lights on and off 3 to 4 times until a new screen appears.
Press the only active button that appears on this new screen. This action will take you to the screen where the 16-digit ERC serial number is displayed.
The received ERC serial number is a 16-character alphanumeric string (e.g., “00C2908C00000000”, “B8763918AA7575A7”). These examples indicate that users have obtained the correct code.

Enter your 6-digit Eclipse ESN or 16-digit Toyota ERC serial number into the query form field.
Click the Search button.
After the search process, the results will appear on the screen after a short while.

After receiving your unlock code, enter it using the A to F and 1 to 9 keys on your device’s touchscreen. After entering the code, confirm the operation to unlock your device.

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