Thanks for the info, 'iooi'. I shall pop out to my car shortly and check if there is any difference between short and long button press. Certainly, the button does work but has only ever wakened ACP, so it's 'Hey Siri' and it works fine.Do you not have the button on the steering wheel?
Top left quick press = Kia navigation (Navigate to ?)
Longer press = Google request. Take it that if you use Apple it will be the same.