Mini Clubman start stop problem

That sounds frustrating! The error memory storing an error, the engine shutting off, and a warning light all point towards a significant issue. Have you checked the basic connections to the car battery? Are they clean and tight? A loose connection can sometimes mimic a dead car battery.

Okay, if the connections are good, and given the symptoms you describe plus the mileage, a failing car battery is highly probable. While it could be something else, I'd say it's time to get the car battery tested professionally. It is probably best to head to a workshop.

Thank you for the quick reply. I have inspected the battery terminals and they appear to be securely fastened and free from corrosion. However, I do not possess the equipment to assess the battery's state of charge or its overall health. Could a partially discharged battery cause such intermittent start-stop malfunctions, even with seemingly good connections?

I appreciate your insights. Following your advice, I visited my local workshop. Indeed, the car battery was the culprit. After replacement, the start-stop system is functioning correctly again. The total expenditure amounted to approximately 290€. Thank you for your assistance.