BMW Spare Keys, Replacement Keys & CAS4 Key Solutions
Need an additional BMW key? Lost a key or need a replacement for your BMW equipped with a CAS4 system?
BMWCoding.us provides BMW CAS4 key programming services for supported BMW vehicles. Whether you need an additional spare key, replacement key, or assistance with a CAS-related issue, we can verify compatibility and available options.
What Is BMW CAS4?
CAS stands for Car Access System.
The CAS module is responsible for:
- Vehicle authorization
- Key recognition
- Immobilizer functions
- Engine start authorization
- Vehicle security functions
BMW utilized CAS4 and CAS4+ systems on various late E-Series and early F-Series vehicles before transitioning to FEM and BDC platforms.
Programming additional keys requires specialized BMW equipment and proper key preparation procedures.
BMW CAS4 Key Services
Additional Spare Key Programming
Adding a spare key before losing your last working key can save significant time and expense.
Benefits include:
- Backup key security
- Multiple driver convenience
- Replacement for worn or damaged keys
- Peace of mind
Replacement Key Solutions
If your key has stopped working or has been damaged, replacement options may be available depending on vehicle configuration.
Compatibility depends on:
- Vehicle model
- CAS version
- Number of working keys
- Vehicle configuration
All Keys Lost Situations
Some all-keys-lost situations may be supported depending on vehicle configuration and CAS version.
Contact us with your VIN for compatibility verification.
Common Supported Vehicles
Examples may include:
- F01 7 Series
- F02 7 Series
- F07 GT
- F10 5 Series
- F11 Touring
- F12 6 Series
- F13 6 Series
- Additional supported CAS4-equipped BMW vehicles
VIN verification is always required before scheduling service.
Why Choose BMWCoding.us?
BMW Specialists
BMWCoding.us specializes in BMW:
- Key programming
- ECU cloning
- Diagnostics
- Programming
- Coding
- Performance tuning
Professional Equipment
Professional BMW programming equipment is used to support CAS4 and CAS4+ applications.
Honest Compatibility Verification
Before scheduling service we verify:
- Full VIN
- CAS version
- Vehicle compatibility
- Key requirements
Not all BMW vehicles utilize CAS4 systems.
Frequently Asked Questions
Can you add a spare key?
Yes, many supported CAS4-equipped BMW vehicles can have additional keys programmed.
VIN verification is required before service.
Can you help if I lost all my keys?
Some all-keys-lost situations can be supported depending on vehicle configuration.
Contact us with your VIN for verification.
Can I purchase a key online and have it programmed?
Compatibility depends on the specific key and vehicle configuration.
Contact us before purchasing keys from third-party sellers.
How do I know if my vehicle uses CAS4?
We can verify the system using your full VIN.
Related BMW Services
- BMW CAS3 & CAS3+ Key Programming
- BMW FEM Key Programming
- BMW BDC Key Programming
- BMW ECU & DME Cloning
- BMW Remote Coding
- BMW ECU Tuning
Request A Quote
Please include:
- Full VIN
- Vehicle year
- Vehicle model
- Number of working keys
- Description of issue
Text 312-801-5459 with your full VIN, vehicle info, and service needed for a quote.
This allows us to verify compatibility and provide accurate pricing.