LG Optimus G PRO E 988

A

AC Question

LG Optimus G PRO E 988, Using for around 1 & 1/2 year. That time it was able to connect with my car Blue & Me through Blue tooth automatically as soon as I entered into my car. After upgradation of latest software automatically , from then my phone is not able to connect with my car Blue & Me through blue tooth automatically, after several manual trying some how it is connected but if I get down from car and switch off ignition, then again I have follow the manually connection for several times.
Can you guide what to do by avoiding visiting service station and long waiting.
Presently my phone is having following software,
Android version 4.4.2
Baseband version APQ8064T/MDM9x15M
Kernel version 3.4.0
Build number KOT49l.E98820c
Software version E98820c-ESA-XX