2002 to present (Megane II to Megane IV). Renault Update List, Tuner List, Radiosat, R-Link
Why does my Megane ask for the code repeatedly? Repeated prompts almost always mean the permanent live is dropping — a tired battery, corroded terminals or a poor earth. Fix the supply and the prompt stops.
Is the pre-code the same as the radio code? No. The pre-code identifies the unit; the four-digit unlock code is derived from it.
Does Megane IV need a radio code? R-Link 2 systems generally do not use a four-digit audio code.