How to use Key Matching(Key Learning) function of LAUNCH-X431 Tool

August 08, 2024

LAUNCH-X431 series tools have excellent performance in key programming. This article will introduce how to use the Key Matching (Key Learning) function of LAUNCH-X431 Tool.

Function description: 2014 Audi A8L smart key matching

Supported product: X431 diagnostic device with G3 (XPROG3) key programmer, and X431 IMMO series devices (IMMO Plus/ IMMO Elite). This article will use LAUNCH-X431 PRO ELite as an example.

Tested model: 2014 Audi A8, VIN: WAUYGB4H0FN****

Procedure:
1. Taking the X-431 PRO anti-theft matching device as an example, enter the Audi model and choose [Anti-theft Key Matching].

How to use Key Matching(Key Learning) function of LAUNCH-X431 Tool

2. Keep the network connection normal and choose [Key Learning].

3. Connect the device to G3 and choose OK.

4. Save the password you have read and choose [Automatic Detection of Anti-theft System].

5. Choose OK.

6. Choose [Learn Key].

7. Choose [Start].

8. Place the key in the sensing area, turn off the ignition switch, turn on the ignition switch, and choose "OK".

9. The anti-theft data is read successfully. Choose "Yes".

10. Put the original car key in the sensing area of the programmer and choose OK.

11. Put a brand new key instead of the original car key in the sensing area and choose OK.

12. The key is generated successfully. Choose OK.

13. The key is generated successfully. Choose "NO".

14. Turn on the ignition switch and choose OK.

15. Input the number of keys to be learned (keys not learned will be deleted) and choose OK.

16. Put the keys to be matched in the sensing area in turn.

17. The instrument display starts from 0/2. Put the first key in the sensing area and the instrument display will change to 1–2.

18. The instrument displays 1/2, indicating that the first key has been learned successfully.
Turn off the ignition switch, put the second key in the sensing area, and wait for the instrument to display 2/2.