After reading on here a few days ago, I decided to try and change the HID bulbs without removing the "bumper." I followed what a few of you suggested. and proceeded to use a small screwdriver in the Torx screw. Nothing would turn it, so I pulled it all apart and put it all back together. It only took me 3 1/2 hours to accomplish. The only way I can see removing the Tamper resistant Torx screws while still in the car would be with the Specially designed, Tamper resistant Torx driver with the hole in the center. I think you guys need to better inform the others on here that these are holding on the bulb covers and will be required to remove the bulbs the correct way.

 

I followed the DIY's from this forum and was fine. There's plenty of scans from the service manual that clearly state you need the tamper proof Torx T20 bit.

https://acurazine.com/forums/3g-tl-2004-2008-93/headlight-front-bumper-inner-fender-w-wash-tank-hid-bulb-scans-garage-e-001-g-001-a-587181/

https://acurazine.com/forums/3g-tl-2004-2008-93/how-do-i-remove-headlights-install-angel-demon-eyes-3g-garage-e079-568836/

But yes, you do need a tamper proof Torx T20 bit with the hole in the center or else you can use a small flathead that just fits and try to get it to unscrew.

 

I used a precision flat head screw driver and it worked just fine....

only exception was my headlights were off the car