Just bought a 2015 tlx adv shawd used private sales
The issue is both my front door keyless entry not working but the backs are working. Any suggestions ?

 

I had the exact same car. Do you mean when you walk up to the front doors, they don't unlock when you grab/pull the handle? Mine did this too. I typically had to pull the handle a couple or few times and sometimes re-position myself in front of the door to get the car to sense the key. Mildly annoying start to every trip. Your fob and its battery are likely four+ years old now. Maybe try replacing the watch battery within to increase broadcast signal strength?

Or do you mean when you unlock the doors with the fob, the front ones don't unlock? You may have to have a mechanic look at the mechanisms.

 

i meant unlock when you grab/pull the handle

both rear doors seems to be working and i changed the battery on my fobs.
i can get the driver door to open 1/5 times and nothing out of passenger side.
i believe its the proximity sensor that's faulty. any one can refer me to that part number ( driver side at least )