After the battery was disconnected your Renault radio is protected by a four digit code.
You'll need to re-enter the radio security code. If you've lost Renault radio code you can recover it quickly and easily with this app.

You need step by step:
* Remove the stereo from the dashboard.
* See the unit serial number.(Unit serial number = 1 letter and 3 digit) EX:V248 F578 ...
* Input serial number to this app.

Input Code Guide:

1. With a Steering Wheel Remote Control:
Press the [ ¬] button then rotate the thumb wheel for 1st digit
Press the [ ¬] button then rotate the thumb wheel for 2nd digit
Press the [ ¬] button then rotate the thumb wheel for 3rd digit
Press the [ ¬] button then rotate the thumb wheel for 4th digit
Shown on screen if code correct press and hold the [ ¬] button to store the code (10 seconds)

2. With Preset Buttons On Radio:
Press 1 Button repeatedly for 1st digit to be displayed
Press 2 Button repeatedly for 2nd digit to be displayed
Press 3 Button repeatedly for 3rd digit to be displayed
Press 4 Button repeatedly for 4th digit to be displayed
Press and HOLD Preset button 6 (or 5) to store your code (10 seconds)

3. With the Stalk Control:
Press switch on the CD radio. When CD will display 0 0 0 0.
Rotate the thumb wheel for the 1st digit.
Next press the bottom button to move on.
Rotate the thumb wheel for the 2nd digit.
Next press the bottom button to move on.
Rotate the thumb wheel for the 3rd digit.
Next press the bottom button to move on.
Rotate the thumb wheel for the 4th digit.
Next press & hold the bottom button button to finish.

*Please note Radio Code For Renault 5.0 is not officially recognized by Renault & Dacia *