Audi VDO Crypto — service tool for VDO “crypto” clusters (93C86)
Compact Windows utility for Audi VDO instrument clusters that store data in a 93C86 EEPROM. Open a raw or decrypted dump, read VIN, Immo ID and Login code (PIN), view Old/Trip values, set the New calibrated mileage, then save with checksums handled automatically.



Key features

• 93C86 support — targets VDO “crypto” clusters widely used across Audi platforms.
• Open 93C86 dump / Open decrypted — work with either format; the app manages crypto/decrypto steps.
• VIN, Immo ID & PIN readout — quickly obtain identification and login data from the file.
• Mileage editor — shows Old/Trip values and writes New value with checksum correction.
• Fast workflow — Open → Inspect → Set new mileage → Save; ideal for bench jobs.

Typical use cases

• Instrument cluster repair or replacement
• Restoring correct mileage after EEPROM corruption
• Preparing a used VDO cluster for installation in the same vehicle

How to use (high-level)

• Read the 93C86 with your programmer and save the dump.
• Click Open 93C86 dump (or Open decrypted) and verify VIN/Immo ID/PIN.
• Enter the New mileage and confirm; the tool recalculates checksums/crypto bytes.
• Save the corrected file and write it back to the cluster; verify on the bench/vehicle.

Compatibility
Tested on Windows 10 LTSC (2019). Also runs on Windows 7 / 8 / 10 / 11 (x86/x64).

Minimum system requirements

• OS: Windows 7 or newer (32/64-bit)
• CPU: Dual-core 2.0 GHz+
• RAM: 2 GB (4 GB recommended)
• Storage: <50 MB free
• Extras: 93C86 EEPROM programmer, stable bench power supply

Best practices

• Back up the original dump and keep a verified copy.
• Use stable power during read/write; validate results before installation.
• Coverage is for Audi VDO 93C86 crypto clusters; other platforms are not guaranteed.

Legal note
This tool is intended for legitimate service (module repair/replacement and restoration of accurate data). Misuse may be illegal in your region. Always comply with OEM policies and local laws.

Disclaimer
Details are compiled from the provided screenshot and public info for educational/archival purposes. Any files, if referenced, are hosted by third parties; our forum does not host or distribute software and is not responsible for external content.