Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMINI2013COOPER COUNTRYMAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4475 (FUNCTIONAL DESCRIPTION - F10 - ENGINE PERFORMANCE)ENGINE PERFORMANCE - FUNCTIONAL DESCRIPTIONEWS INTERFACE EWS4KEY IDENTIFICATION AND STARTING OPERATION
2013 Mini Cooper Countryman, Standard Trans
Key identification and starting operation
2013 Mini Cooper Countryman, Standard TransSECTION Key identification and starting operation
WARNING: This page does not describe the selected car, but rather 45 other vehicles, including the 2016 BMW M5, 2016 BMW 550i xDrive, 2016 BMW 550i, 2016 BMW 535i xDrive, and 2016 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.
The following procedure takes place after identification of the vehicle key:
- The vehicle key transmits the key data to the CAS/FEM/BDC control unit.
- The CAS/FEM/BDC control unit checks the correctness of the key data and only then enables activation of the starter motor by the engine control unit.
- The engine control unit calculates a request from a random number and the secret key. The engine control unit transmits this request to the CAS/FEM/BDC.
- The CAS/FEM/BDC uses the request and the secret key to calculate the confirmation. The confirmation is transmitted from the CAS/FEM/BDC to the engine control unit.
- The engine control unit itself also calculates the confirmation that the CAS/FEM/BDC expects. The engine control unit then checks that the confirmation it receives from the CAS/FEM/BDC matches the confirmation it has calculated itself.
- If the confirmations match, the engine start is enabled.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.