Nissan Micra K12 Key Programming (Add / Relearn Keys)

This guide shows how to program a new key for Nissan Micra K12 using an OBD2 diagnostic scanner.

The procedure uses the free PIN code method (Glove Box Code) and will erase all stored keys and relearn them again.

Affiliate Disclosure: iamcarhacker.com is an Amazon and other affiliate programs Associate. As an Amazon Associate, I earn from qualifying purchases. Full Affiliate disclosure.

Used tool in this guide

Supported vehicles

Vehicle
micra-k12

Technical overview

Item	Details
Vehicle	Nissan Micra K12
Supported years	~2003 – 2010
System	Immobilizer
Procedure type	Key programming
Difficulty	Medium
Time required	~5 minutes
Prerequisites	At least one working key, new key cut to vehicle

What to look for when ordering a new key

When buying a replacement key for Nissan Micra K12, make sure it has:

• 433 MHz frequency
• PCF7946A chip
• Hitag 2 / ID46 immobilizer
• compatible PCB marked 5WK4 876 or 5WK4 818
• key blade that can be cut to match the original key

⚠️ Many cheap keys use incorrect chips (ID4D or other variants) which will not work with the Micra K12 immobilizer system.

Notes about programming

This type of key uses a combined remote + transponder chip (PCF7946A).

That means:

• remote locking is programmed automatically
• immobilizer chip is programmed during the same key learning procedure

No separate remote pairing is required.

Tested key used in this procedure: https://s.click.aliexpress.com/e/_c4dOBUtN

Step-by-step procedure adding/programming nissan micra key

Step 1

Insert the original key into the ignition and switch ignition ON.

Step 2

Open the diagnostic scanner and navigate to:

Special Functions → IMMO → Nissan → Free PIN Code

This function allows programming keys without manually calculating the immobilizer PIN.

⚠️ The system will warn that all keys will be deleted and relearned.

Step 3

The scanner will ask for the Glove Box Code.

Locate the 12-digit code on the sticker inside the glove box.

Use the middle number from the sticker.

Enter the code into the scanner.

Step 4

Follow the instructions on the scanner screen.

Insert the key and switch ignition ON, then press OK.

Step 5

The scanner will ask:

“Is the immobilizer indicator off?”

If the immobilizer light is no longer flashing, select YES.

Step 6

Switch ignition OFF when requested and press OK.

Step 7

The scanner will ask if you want to program another key.

Insert the new key, switch ignition ON, and confirm.

Repeat the process for each key.

⚠️ Every key must be programmed during this session or it will stop working.

Step 8

After the last key is programmed, the scanner will display:

Programming complete

Turn ignition off and test all keys.

Video: How to program Nissan Micra K12 key

This video shows the full process of programming a new key for Nissan Micra K12 using an OBD2 scanner and the glove box code method.

Additional Information & Compatibility Notes

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.

This procedure performs a full key relearn.

When the process starts:

• All previously stored keys are erased
• Every key must be programmed again during the same session

If a key is not relearned, it will no longer start the vehicle.

Some scanners may also support PIN code programming instead of glove box code, but the glove box method is the easiest for most vehicles.

Alternative tools

• ?XTool A30M
• XTool D8s
• Best OBD2 scanners for key programming

Related guides & background information

• Starter guide to automotive key programming

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.

More procedures like this

Procedures tested with this scanner