The Abrites Diagnostics for Renault 7.3 offers the “Radio Code” Special Function.

It will allow you to adapt the radio if it was somehow reset.

You need to have the last 4 symbols from the ID, which can be obtained in three ways

On the back side of the unit you can find the code.

In this case it is Y135:

You can hold the radio buttons 1 and 6 for 3-4 seconds and the code should be automatically loaded on the radio display. The Twingo III car is an exception, where the code standard is different. You can also click on the “Extended Identification of the radio when diagnosing the car and the code will be displayed as well.

Once you have the code, go to the “Radio Code” Special function and enter the code and calculate the radio code: