I have a 06 TL I just recently purchased. I am not new to the TLs, although, this is the first TL that I have owned that the bluetooth works (sort of). I bought it about a week ago. When test driving it/driving it home the bluetooth didn't work. I drive about 40 miles to work every morning. I have noticed that my bluetooth only works on my way to work, it's fully functional (buttons work perfectly, light up, recognizes my voice, etc etc). On my way home from work (or any other time for that matter) it does not work. So it only works in the AM, on my way to work. Anyone have ANY idea? This doesn't make sense.

I thought it might be because the car is cold in the morning, but I park my car from the time I clock in at work until I go home (usually about 8-12 hours). So it's a cold start either way.

 

It might be a broken solder problem-- the sun is up and heating the HFL unit in the a.m. to cause enough expansion to complete the circuits inside the HFL. In the evening, there is no sun, less expansion and thus a broken circuit on the way home.

I had the reverse happen with the HFL during a summer: the HFL worked in the p.m. on the way home because it was heated up by the sun during the day, but didn't work in the a.m. as there wasn't enough heat from the a.m. sun.

You can try baking the HFL circuit board to fix it; otherwise replacement is the way to go-- @$190 part and 10 minutes of work.