Infinity Symbol Disappeared on Music App

For the last few months, every time I got into my car, my phone automatically connects and my music starts playing immediately, which is what I want it to do. But since going into a garage for a brake service, it has stopped working and I have to manually start it. Google searches indicate that I have to press the infinity symbol to get this working, but, the infinity symbol has disappeared on all my devices.

can anyone help to recover this for me please?

For info, phone = iphone15 promax

Car = BMW 320i saloon 2016 model, English Market,

it does not have CarPlay