How to program key card on Renault Megane MK2 (2006)

This guide shows how to program a new key card for Renault Megane MK2 using an OBD2 diagnostic tool.

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Used tool in this guide

Supported vehicles

Vehicle
megane-mk2

Technical overview

Item	Details
Vehicle	Renault Megane MK2
Year	~2002–2008
System	Immobilizer / Keyless system
Procedure type	Key programming / Key learning
Difficulty	Medium
Time required	~5–10 minutes
Prerequisites	At least one working key card, compatible new card

Step-by-step procedure

Exact blank card used in video: https://s.click.aliexpress.com/e/_c3RadJo7

Type: Renault key card (ID46 PCF7947)
Frequency: 433 MHz
Compatibility: Renault Megane II / Scenic II (2003–2008)
Price: ~5–10€

This is a cheap replacement key card commonly available online.
It supports both immobilizer and remote locking functions and can be programmed using diagnostic tools like Autel IM608.

1. Connect diagnostic tool

• Plug in OBD2 scanner
• Turn ignition ON (card inserted, engine OFF)

2. Select vehicle

• Try automatic VIN detection
• If it fails:
  • Select manually → Renault → Megane II

3. Navigate to key programming

Special Functions → Key Learning

4. Start key learning procedure

• Insert original working card
• Turn ignition ON (engine OFF)
• Confirm procedure on scanner

5. Confirm key reset

⚠️ Important:

• Tool will display message:
  • All keys will be deleted

👉 Confirm to continue

6. Follow on-screen instructions

Typical sequence:

• Remove card
• Turn ignition OFF
• Turn hazard lights ON
• Open driver door

👉 These steps are required for immobilizer reset

7. Program new key card

• Insert new key card
• Confirm on scanner
• Wait for programming to complete

8. Finalize procedure

• Reinsert original key if required
• Confirm completion

9. Test keys

• Test new card:
  • Insert card → ignition ON
  • Try starting engine
  • Test central locking

Video: How to program Renault Megane MK2 key card

This video shows the full key programming process, including navigation through diagnostic menus and real testing of the new card.

Additional Information & Compatibility Notes

• This procedure deletes all existing keys
• You must program all keys during the same session

Before using or purchasing any diagnostic tool for this procedure, always verify compatibility with your exact vehicle model, year and system configuration. Supported functions may vary depending on software version, hardware revision and regional limitations.

Important notes

• VIN auto-detection may fail → manual selection works
• Cheap replacement cards (e.g. AliExpress) can work reliably
• Remote locking functions are programmed automatically with the card

Real-world result from this test

• New card successfully programmed
• Engine starts correctly
• Central locking working

⚠️ Original card had weak battery → caused previous issues

Alternative tools

• Best OBD2 scanners for key programming

Related guides & background information

• How to program car keys with OBD2 scanner

Legal & safety notice

This procedure modifies vehicle system settings through the control module. Incorrect use may cause faults or warning lights. Always ensure the vehicle is secured and follow proper safety procedures.

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