GoDiag | BMW CAS4/CAS4+ | Accessories
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
Easy returns
Easy returns
You can easily request your return through your account. We will send you the return label by email. Return shipping costs are your responsibility.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
The GoDiag BMW CAS4/CAS4+ test platform accessory is a specialized hardware interface designed for vehicle technicians and diagnostic specialists. This system enables safe reading, testing, and programming of CAS4 and CAS4+ control units outside the vehicle. The device acts as a reliable bridge between the disassembled immobilizer module and external programming equipment, such as the Godiag GT100 or specific key programmers. A key technical feature is the use of a model-specific OEM connector, allowing the module to be connected directly and stably without opening the housing or soldering on the vulnerable printed circuit board (PCB).
When used on the workbench, this platform simulates the electronic vehicle environment, allowing the technician to efficiently complete complex procedures such as learning new transponders or performing an All Keys Lost recovery. The user connects the CAS module via the factory connectors, places a key in the built-in inductive reading ring, and connects the test equipment via the OBD2-to-DB25 cable. The integrated LED indicator then shows the current status of the immobilizer, providing immediate visual feedback during synchronization. This allows precise verification, before installation in the vehicle, that the CAN bus communication between the programmed key and the immobilizer is correctly established.
ADVANTAGES
KEY POINTS
Applications and functionalities
This platform is designed to optimize the workflow when diagnosing and programming complex BMW immobilizer systems. It allows technicians to work safely and in a controlled manner without direct dependence on the vehicle.
- Off-site key programming: Enables direct connection of disassembled CAS modules on a workbench for key learning, ideal for remote work.
- All Keys Lost recovery: Offers the necessary hardware connection to generate new start data and safely write it when all original vehicle keys are missing.
- System diagnosis and troubleshooting: Helps determine whether a starting problem is caused by a defect in the CAS module itself or by desynchronization between the module and the transponder.
- Data backup and EEPROM access: Provides a stable connection for reading, saving, and overwriting D-Flash and P-Flash data within the CAS4 architecture in combination with external reading equipment.
Special functions and capabilities
In addition to standard connection options, this device has specific hardware features that make the workflow safer and more transparent.
- Start switch simulation: Equipped with a physical push button that mimics the operation of the original ignition lock, necessary to wake the CAN bus and activate diagnostic mode.
- Direct synchronization test: Allows the user to immediately verify after programming whether the CAS module accepts the new key and correctly sends the start authorization signal via the LED interface.
- OEM-specific pin connector: Equipped with a specially designed plug that exactly matches the factory connector, preventing communication pins on the module from bending or breaking during connection.
Package Contents
- 1x GoDiag BMW CAS4/CAS4+ Test Platform
- 1x OBD2 to DB25 data cable (50 cm)
Technical specifications
| Specification | Description |
|---|---|
| Product brand | GoDiag |
| Product model | BMW CAS4/CAS4+ Test Platform |
| System compatibility | CAS4, CAS4+ (9S12XD512/1L15Y, 9S12XEP100/5M48H) |
| Supported model years | 2010 - 2014 |
| Supported vehicles | BMW 5 Series (F07/F10/F11/F18), 6 Series (F12/F13), 7 Series (F01/F02) |
| Device connections | OBD2 (female), DB25 (male) |
| Module connection | Dedicated OEM CAS4 / CAS4+ connector |
| Hardware features | Integrated inductive key reader, start simulation button, LED status indicator |
| Device dimensions | 7.5 cm x 6 cm x 3.5 cm |
| Cable length | 50 cm (19.69 inch) |
