Audi EZS is the Access & Start Authorization Control Module (J518) installed in:
- Audi: A6, Q7
Technical details
| MCU | Flash | Eeprom |
|---|---|---|
| MC9S12DG128 | 128KB | 2KB |
| MC9S12DG256 | 256KB | 4KB |
Available services
EZS synchronization
Synchronizes the ECU with the vehicle’s Audi EZS to restore proper immo operation. Required after ECU replacement, module mismatch or when restoring immo pairing
Audi EZS transfer
Transfers immo data between two Audi EZS modules. Used when replacing or adapting an EZS module.
Part numbers
All Audi EZS part numbers are supported for transfer and synchronization services. The list below shows the most common variants:
Notes
- 🔧 Full Eeprom read is required.