Reading the complete immobilizer data directly from a working key
This solution allows reading complete immobilizer data directly from a working key, including:
- Key ID
- Immobilizer Secret Key (CS)
- Synchronization Data (Immo Data)
- Immobilizer Platform Information
No third-party information is required.
With our software you can:
- Add a spare key to MQB Immo 5C and 5D vehicles without reading any info from the Immobilizer (Dashboard or CEM).
- Extract slave modules Immo data for ECU, TCU, or ELV replacement.
10.2 Immo Data Extraction
1 |
Disassemble the working key shell and access the PCB
|
2 |
Solder the CB503 cable to the connection points on the PCB
Following the wiring diagram shown in the NCF menu of the ZN085 software. |
3 |
Read the NCF MCU
This extracts:
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10.3 Key Preparation
| Key | Prepare it with | Then |
|---|---|---|
| OEM new or used keys | Make Key with ZN085 - prepared as a Dealer Key | Program it to the vehicle using Key Learning by CS |
| Aftermarket virgin keys | Make Key with Protag | Perform Key Learning by CS |
10.4 Module Replacement
When a working key from the donor vehicle is available, the extracted Immo data can be used for the replacement of:
- ECU, TCU or ELV
This eliminates the need to read the donor module directly or to purchase synchronization data from third-party sources.
The key learning and module replacement in the VAG software: VAG Online - MQB 5C/5D Immo Data Reading.