[rocky]

Honestly I didn't know UK cars had Stop/start that long ago. Are you sure it's not the car yelling you the key fob battery is low and needs replacing?

 

[rocky]

Stop start will work only if certain set parameters are met including coolant temp and battery charge. I've driven both stick or manual and auto cars in UK with S/S and the system operates differently depending on transmission type.

The battery in the key fob needs replacing.