Apple Maps does not give directions via Bluetooth

Question

I have a iPhone 5 with IOS7.0.4 installed.  Apple maps will not give me voice directions via Bluetooth in my car.  I have tried to do this in several cars but it doesn't work.  Google Maps attaches itself to To Bluetooth and gives voice directions over the cars speaker system every time.
Is there a setting I am missing?

Answer 1

I have just returned from a trip across Italy in a brand new Suzuki hire car. It had a bluetooth audio system and after some fiddling I got the setup working really well.
Pairing was not easy (the car came with no manual). After much trial and error I got my iPhone 4S (OS 7.1.2)  paired (You get the car's audio device into 'pairing mode' at the same time looking at your iPhone's 'Settings Bluetooth window for a new device to appear. You then enter the passcode given by the car into the phone. You can check that its paired: A message should come up on the car, the iphone says connected against the new device. And starting a track playing in 'music' it should then be played over the speakers - if not there is a menu on the phone which enables you to select the car's device.
If your Apple Maps directions are working fine on the phone's internal speaker (enter start & destination, press Route, then Start), then they should now work over the car's audio system. Furthermore;
- Each time a direction is given the music track gets muted
- Likewise phone calls should also mute out the music (not sure about the directions tho - didn't get any calls in Italy!)
- On this car, the music started playing automatically thereafter from my phone every time I got into the car! I thought this initially extremely cool, because on my car back home (a Parrot kit) it takes a while to get it going.
A couple of 'glitches' which someone on here may know the answer to!
- Whilst you can select options for the volume of the directions : Loud / medium/ low, changing the volume of the music also softened the directions. I was in the car with four others and getting everything 'right' proved a bit of a challenge
- When returning to Naples we got given a wrong address which sent us to the wrong place (with a flight to catch after) putting everyone into a panic:-  'Switch the bloody music off!" I was told! . I tried to but found this hard to achieve without also killing the directions (which we were relying on).
Note that we only had one phone paired! Each setup varies with regards multiple phones and how to switch between them. This is a headache in our family, as we have 5 iPhones and everyone drives. Multiple phones are often not handled well.