Default [Q] Bluetooth powersave mode somehow?

I have an issue with my Bluetooth while connected to my Jawbone heaset. My vehicle keeps asking to connect to the phone simultaneously with the headset. It drains battery like crazy! From 100% to 40% in just 2 hours! My old Sony Ericsson had an option for Bluetooth powersave mode. It just allowed one connection in that mode. I'd really use something like that... Any idea's?
Thanks in advance!

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