BMW Immobilizer Services (EWS3–BDC)
BMW Immobilizer Programming & Module Services
DG Autohaus provides professional BMW immobilizer services for legacy and modern BMW platforms. From EWS3 and CAS systems found in earlier BMW platforms through modern FEM and BDC architectures, we perform programming, cloning, synchronization, data transfer, module replacement support, and bench-service procedures using professional BMW diagnostic and programming equipment.
Ownership and Authorization Notice
Proof of vehicle ownership and customer identification are required for key, immobilizer, all-keys-lost, VIN-related, and security-sensitive services. DG Autohaus reserves the right to decline any request when ownership, authorization, module origin, or intended use cannot be verified.
BMW CAS & Key Services
DG Autohaus provides professional BMW immobilizer services for supported CAS systems, including module replacement preparation, key programming, ISN-related procedures, synchronization, cloning, recovery, and bench testing.
Dedicated programming equipment and controlled bench workflows allow supported CAS modules and keys to be handled outside the vehicle when required.
- CAS2, CAS3, and CAS3+ programming
- Module replacement and data-transfer services
- Key programming
- Module cloning and replacement preparation
- ISN-related synchronization
- Bench diagnostics and recovery
Supported Systems
- EWS3
- EWS4
- CAS1
- CAS2
- CAS3
- CAS3+
- CAS4
- CAS4+
- FEM
- BDC
Available Services
- Module cloning
- ISN synchronization
- Key programming
- VIN data transfer and correction where supported
- Used module preparation
- EEPROM and Flash backup
- EEPROM repair
- Module recovery (when supported)
- DME and immobilizer synchronization
- CAS/FEM/BDC replacement programming
- Bench programming
- Coding after replacement
- Data transfer to replacement modules
What to Send
- Vehicle VIN
- Module part number and label photos
- Key count and any start or sync symptoms
- Vehicle year, model, engine, and transmission
- A clear description of what happened before the failure
Mail-In and Vehicle-Side Requirements
- Confirm the module is supported before shipping
- Pack the module in anti-static protection
- Include contact information and return shipping details
- Do not send unrelated vehicle parts unless requested
- Use tracked and insured shipping
- Some repairs still require vehicle-side coding or synchronization after installation
- Certain replacements need matching keys, CAS/FEM/BDC data, or DME verification
- Final testing may be needed after the module is reinstalled
Common Service Situations
- Lost key or no-start complaints on supported BMW immobilizer systems
- Used module replacement that needs synchronization or data transfer
- Failed CAS, FEM, or BDC module evaluation
- Immobilizer-related communication faults after module repair or replacement
Frequently Asked Questions
Can you help before I ship a module?▾
Yes. Send the module label, VIN, and a short symptom description first so compatibility can be reviewed before shipping.
Do all immobilizer jobs need the vehicle?▾
No. Many immobilizer and module services can be completed by bench work, but some final coding or synchronization steps require the vehicle.
What if the module is physically damaged?▾
Some damaged modules can be recovered, but recovery depends on the failure mode, hardware condition, and data integrity.
Request Compatibility Review
Send the module information and vehicle details first. We'll review compatibility, confirm the likely service path, and tell you whether bench work, replacement support, or additional vehicle-side steps are needed.
Do not ship a module until DG Autohaus has reviewed the vehicle information, module identification, service request, and compatibility.
Request Compatibility ReviewImportant Notice
Service availability depends on the module generation, hardware version, software version, and overall module condition. Some failed or physically damaged modules may not be recoverable and require evaluation before service can be confirmed.
Request a Quote
Tell us what your vehicle needs.
Share a few details and we’ll review your request with the care your build deserves.