Low Battery - Built in Sat Nav?

Hello

I keep getting a message popping up on the Sat Nav/Bluetooth display screen saying 'Low Battery'.

Whats it referring to?

The car?
The keyfob?
A device connected to it via blue tooth?

Cheers
 
I've got the same problem. Usually came up previously when iPhone battery was low but now it does it all the time.....
 
Mine does it too, only since I put ios6 on my iPhone so was blaming that for it. Is there any non iPhone users having this problem?
 
I also didn't have this issue before IOS 6.

I can't see it being the remote as it happens before the message comes up saying 'the remote is now connected'
 
Mines not on a sat nav it's on the little screen that has all info and track monitor on it