My driver side tail light isn't working while I press on the brake. The bulb is new, the passenger side is working perfectly. Any idea what I should I do?

 

Do you have a volt meter to take some readings?

LT GRN should have battery voltage when the brake is pressed. The BLK should have good continuity to ground....I'll assume it does since I believe the outer brake lights both share this ground point but test it anyway.

 

Having the exact same problem with my 2010 Crosstour. Checked power and got 8 vdc with the meter. Had the AC condensor changed recently. when I picked up my car I noticed that the programming for driver seat and mirrors was not set when I got home.