OBDStar X300 Classic G3 Introduces MQB AKL Sync Data Calculation

The OBDStar X300 Classic G3 programmer has unveiled a groundbreaking new feature: MQB All Keys Lost (AKL) Sync Data Calculation, eliminating the need for third-party software. This innovation simplifies immobilizer synchronization for VW, Audi, SEAT, and Škoda (MQB platform) vehicles, offering a faster and more cost-effective solution for locksmiths and automotive technicians.

In this article, we’ll explore:

• How the new Sync Data Calculation feature works
• Supported modules and procedures
• Compatibility with other tools
• Step-by-step execution

How the OBDStar G3 MQB AKL Sync Calculation Works

Requires VW/Audi/Skoda/Seat software version 45.47 and onwards.  New software version will be available to download this month (end of April 2025).

Also need to use with the OBDSTAR RH850/V850 kit.

Previously, generating sync data for MQB-platform vehicles required:

• Extracting data from multiple modules (Instrument Cluster, ECU, Transmission, ELV). Data is usually required from all 4 modules/locations in order to calculate sync data.
• Using third-party tools (e.g., VVDI, AVDI, or manual calculation)
• Manual file transfers and decryption

Now, the OBDStar G3 can:
✅ Read data directly from the vehicle’s modules.
✅ Calculate sync codes automatically (no manual hex editing).
✅ Program dealer keys without external software.

Key Features:

• Free service (no token system)
• Three sync calculations per day (limits abuse)
• Supports multiple modules (Cluster, ECU, Transmission, ELV)
• Works with other diagnostic tools (e.g., ACDP, DC76 for data extraction)

Process for MQB AKL Sync Calculation

1. Accessing the MQB AKL Function

• Navigate to:
  VW/Audi/SEAT/Škoda (MQB) – MQB Meter- All Keys Lost
• Ensure the device is connected to stable network (required for sync calculation on OBDSTAR’s server).

2. Reading Required Module Data

The system needs data from four critical modules:

1). Instrument Cluster (Dashboard IMO Data)

• • Supported versions are listed (expanding regularly).
  • Can be read via:
    • OBDStar G3 directly
    • Other tools (e.g., ACDP) if files are unencrypted

2). ECU (Engine Control Unit)

• • Supported ECUs (e.g., EDC17, Simos series)
  • Pinout diagrams are provided for direct reading

3). Transmission Module

• • Some models (e.g., DQ200 G2) require immobilizer data.
  • OBDStar offers 7-in-1 or other gearbox connector kits for easier access.

4). ELV (Steering Column Lock)

• • Can be read via:
    • New C4-06 adapter (upcoming release)
    • The collection cable method

Method 1: Read immo data by RH850/V850 kit.

Method 2: Collect ELV authentication data and calculate immo data

3. Calculating the Sync Code

Once all data is collected:

• Select “Calculate Sync Code”
• The system processes the data and generates the immobilizer sync.

4. Programming a New Key

• Use “Make Dealer Key” to program a new key via OBD.
• No need for external key programmers.

Compatibility with Other Tools

A major advantage of this feature is flexibility in data sourcing:

• Instrument Cluster Data can be read using:
  • OBDStar G3
  • ACDP, VVDI, or other tools (if unencrypted)
• ECU Data can be extracted via:
  • OBDStar DC76 or G3 itself
  • Direct ECU bench reading (pinout guides provided)

This means technicians aren’t locked into OBDStar’s ecosystem—existing tools can still be used.

Limitations & Considerations

• Three sync calculations per day (prevents misuse).
• Server connection required (no offline mode).
• Some modules may still need adapters (e.g., C4-06 for ELV).
• Not all MQB variants supported yet (but expanding).

Keep an eye on OBDSTAR’s upcoming updates.

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