I am having an issue with drained battery on my 2011 tsx. i've had to swap out new battery very often, ranging from a few months to 1 year.

it seems that the suggestion is to disconnect the HFL.

Is the HFL only for bluetooth connection? What features am i missing with the disconnection?

 

Delete all the connected devices from the Bluetooth pair. Get those yellow optima batteries and I haven’t had any issues since. Clean your battery terminal as well. If you have a audio system make sure it’s not draining it. I’m at 154k miles and my alternator is going out so it looks like it’s a battery drain again but it’s not it’s the alternator.