How to connect an iPhone 5c to a Hyundai active car?

I connect it through Bluetooth but for example, I stall the car I have to connect it again. If I have the ignition on and I connect my phone through Bluetooth again and I turn the engine on it's goes off… How do I get it where it's on all time and I don't have to keep connecting it.

IOS 7: Uninstalled apps are still taking up space?

I've just been to settings to find something unusual.
Settings > Mobile > at the bottom, there's a bit called 'Uninstalled Apps', for me it's taking up 61.4 MB. How do I get rid of this (preferably without syncing or restoring)?
I have 0 bytes of space (I can take screenshots, and if I use the Instagram camera I can take pictures, but I want the space to download more music)
I've cleared Safari history and cookies, I've deleted my message strings and emails (although Messages is still taking up 355 MB) and I've deleted every app and photo I don't need (I have Instagram (57 MB) Denon Audio (27.2 MB) MetroTimer (23.2 MB) and Flappy Bird (3.7 MB)
iOS 7.1.2
iPhone 4
0 bytes - 5 MB available (it changes, but is often 0 bytes)
6.2 GB used
Deleting songs is not an option
I synced about a week ago and this fixed a separate issue I was having, but not this.
Thanks!
1 picture is Messages taking up loads of space, the other is Uninstalled Apps taking up space
Sorry if it's badly worded and/or long winded.IOS 7: Uninstalled apps are still taking up space