If you want to use the steering wheel controls then you need to use something like this:
https://www.amazon.co.uk/Airdual-Bluetooth-Adapter-Mini-Integration/dp/B07G45Z267/ref=sr_1_fkmr0_1?crid=3PVK380SKTVGM&dchild=1&keywords=bovee+wma3000b&qid=1590656369&s=electronics&sprefix=Bovee+WMA3000%2Celectronics%2C180&sr=1-1-fkmr0
But they're around £90, and I think you need to have an option of some form on your car (can't remember which, can search using your VIN number to find what options are listed on your car) to allow the car to cycle stuff from your phone. Can just leave this plugged in, set and forget.
Edit: Mine is a Tune2air wma3000b Bluetooth adaptor (non-combox).
https://www.amazon.co.uk/Airdual-Bluetooth-Adapter-Mini-Integration/dp/B07G45Z267/ref=sr_1_fkmr0_1?crid=3PVK380SKTVGM&dchild=1&keywords=bovee+wma3000b&qid=1590656369&s=electronics&sprefix=Bovee+WMA3000%2Celectronics%2C180&sr=1-1-fkmr0
But they're around £90, and I think you need to have an option of some form on your car (can't remember which, can search using your VIN number to find what options are listed on your car) to allow the car to cycle stuff from your phone. Can just leave this plugged in, set and forget.
Edit: Mine is a Tune2air wma3000b Bluetooth adaptor (non-combox).