The first thing to try with the phone is the old turn it off and back on again. Even cutting edge technology needs a wee rest now and again. Then check that the phone is still authorised/trusted and set for automatic connection to the car.
Try to make sure that when it does work that you allow the complete pairing procedure to happen before turning the ignition off.
When you know that you won't be needing it for a while turn off the Bluetooth in the phone. Check that there are not too many paired devices in the car and the one or more of the is not in conflict with your device.
As a last resort delete the car from the phone and vice versa so you're starting again from scratch.
Hope some of that helps.



