At Terry’s Locksmiths, we specialize in resolving key and lock issues for Mini vehicles, combining our deep knowledge of Mini’s key systems with advanced tools to deliver reliable solutions. From working on older models with EWS systems to programming the latest CAS3++ keys, we ensure your Mini is back on the road quickly and securely.
Understanding Mini Key Systems: EWS to CAS3++
Mini Cooper vehicles have evolved over the years, featuring different key and immobilizer systems. Older models, particularly pre-2004, use the EWS system similar to older BMWs. These vehicles require genuine remote keys, which need to be ordered directly from Mini using the VIN. The cost for these keys typically hovers around $380, but aftermarket options become viable for models from 2004 onwards.
Newer Mini models have transitioned to a more advanced system, known as CAS3 or CAS3++. These systems support slot keys, where the key fob is inserted into a dashboard slot to start the car. The latest models may include additional encryption updates, such as CAS3++, which requires specialized diagnostic tools to detect and program.
Technical Procedures for Mini Key Programming and Cutting
-
Mini Cooper EWS Models (Pre-2004):
Mini vehicles equipped with the EWS system, such as the 2002 Mini Cooper S, require genuine remote keys for successful programming. These keys come with barcodes that are essential for using Smart Pro to complete the programming process. Additionally, accessing the EWS unit near the foot pedals is necessary for retrieving key data when all keys are lost. In situations like the job handled by Kent for a 2005 Mini Cooper, the AK90 tool was used to read and program the EWS data directly, providing a cost-effective aftermarket solution for non-remote keys. -
Handling All-Keys-Lost Scenarios for 2005 Models:
When all keys are lost, it often involves pulling the EWS unit and using tools such as AK90 or Tango to program a new transponder key. For example, Seb Winkle resolved an all-keys-lost issue on a 2005 Mini Cooper Hatchback by extracting the EWS unit, reading the data, and programming an HU92 key using the Easy Eeprom method. The process also included Lishi picking the door to retrieve the key code for cutting. -
Programming Slot Keys for 2007 Onwards:
For Mini Cooper models from 2007 onwards, including R56, programming usually involves slot keys, where the key fob fits into the dashboard. These keys often require voltage stabilization to prevent power dips during programming. A Tornado battery stabilizer is used to maintain voltage between 13.4 and 13.9 volts. Henry Kroll worked on a 2011 Mini Cooper to program a customer-supplied slot key using Autel, ensuring a steady voltage to avoid programming disruptions. -
Advanced Key Systems and CAS3++ Updates:
From around 2010 onwards, Mini Coopers may have been updated to CAS3++. Vehicles with this update require special attention, as the Lonsdor diagnostic tool can quickly identify the update status. For instance, Seb Winkle addressed an all-keys-lost case on a 2010 Mini Cooper by reading the EWS 3 data with the AK90 and then writing it to a genuine 7935 transponder chip, following the appropriate steps to ensure the key was programmed successfully.
Special Considerations and Recommendations
-
Use Genuine Remote Keys for Older Models:
For pre-2004 Minis, genuine remote keys are necessary due to the EWS system’s requirements. These keys must be ordered using the vehicle’s VIN, as aftermarket keys cannot be programmed successfully without the associated barcode. -
Voltage Stabilization During Programming:
Ensuring that the battery voltage remains stable is crucial for models with slot keys. Tools like the Tornado battery stabilizer can help maintain the required voltage levels during programming to prevent failure. -
Avoiding Spare Key Programming on CAS3++ Minis:
Due to the risk of bricking the vehicle’s immobilizer system, we generally advise against programming spare keys for CAS3++ Minis unless it is necessary. Diagnostic tools may still allow programming if there is no encryption update, but we recommend informing customers of the risks involved.
Challenges with Aftermarket Solutions
-
Older Minis with EWS Units:
Programming keys for older Minis can be challenging due to the need for physical access to the EWS unit, which is located near the foot pedals. Additionally, genuine remote keys are more reliable than aftermarket options for these vehicles. In one case, Sonia Donald used a KD remote programmer to program a spare key for a 2007 Mini Cooper, opting for a Mazda B14-3 KD key due to its compatible rounded edges. -
Slot Key Programming:
For slot keys in models from 2007 onwards, programming often requires using aftermarket slot keys. Autel tools are capable of performing these tasks, but there is no guarantee of compatibility until the vehicle is connected to the tool. This uncertainty is highlighted in a case where Henry Kroll programmed a spare slot key for a 2009 Mini Cooper using Autel and maintained the required battery voltage.
Tools of the Trade
Our locksmiths utilize a variety of diagnostic and key programming tools, including:
- AK90: Ideal for older EWS-based Mini models. This tool allows us to read data directly from the EWS unit and program keys accordingly.
- Smart Pro: Used primarily for genuine key programming, particularly in pre-2004 Minis that require the barcode for successful coding.
- Autel and Lonsdor: Commonly used for programming slot keys and diagnosing CAS3++ updates. These tools help us assess compatibility before proceeding with key programming tasks.
- Tango and VVDI Key Tool Max: Supplementary tools used for tasks such as cloning and writing transponder data when needed.
Conclusion
Terry’s Locksmiths provides expert services for Mini vehicles, addressing complex ignition, key, and lock issues with a tailored approach for different key systems. Our knowledge of EWS, CAS3, and CAS3++ systems ensures that we can handle everything from simple spare key programming to complicated all-keys-lost scenarios, with an emphasis on using the right tools and methods to deliver quality results. Whether it’s a classic Mini Cooper S or a modern Countryman, we have the skills and experience to get you back on the road.