Toyota ERC Calculator

Bartosz Wójcik
2 min readAug 1, 2023

Toyota ERC protection is a feature that prevents unauthorized use of the Japanese car radio player/audio/navigation system. It requires a four-digit code to unlock the device after a battery disconnection or a system reset.

It is designed to prevent unauthorized use of the device.

Toyota radio is asking for an unlocking key
Toyota radio is asking for an unlocking key

However, if you don’t have the code or you lost it, you might think that you have to go to an authorized car dealership and pay a hefty fee to unlock your device.

But there is a much easier and cheaper way to do it yourself, using an online solution at:

PELock is a company that specializes in software protection and reverse engineering services.

How to use Toyota ERC Calculator?

Using Toyota ERC Calculator is very simple and fast. All you need is the ERC code of your radio player, which you can find by pressing and holding the 1, 3, 6 and Track Up buttons on the device for a few seconds.

Toyota ERC protection
Toyota ERC protection

The device will display a 16-digit alphanumeric code on the screen, which is the ERC code. Then you can go to PELock’s website and enter the ERC code in the calculator. The calculator will instantly generate a four-digit unlocking code for your device. You can then enter the unlocking code on the device using the numeric buttons. The device will confirm the code and resume normal operation.

Toyota ERC
Toyota ERC

How much does it cost?

ERC Calculator is very affordable compared to other solutions. You can unlock your device for only $5 USD, which is way cheaper than going to an authorized car dealership that might charge you hundreds of dollars for the same service. You can pay securely using PayPal or credit card, and you will receive an email with your unlocking code and instructions. You can also use PELock’s Radio Code Calculator API and SDK to mass-generate radio codes and resell them to your customers.

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Bartosz Wójcik

Developer behind PELock software protection system, author of reverse engineering articles.