Changing the LEDs makes your car a manual
Did you plug in your circuit board after you soldered the LEDs in to make sure they all worked? You don't need the LCD screen over the LEDs to plug in the board and see if they light up.
Make sure those LEDs are in the right way - I put all my red ones in backwards at first as the install said to do, but that was false, so I had to take all my red outs out and turn them around to the normal orientation.
If your LEDs are in right, take them out and solder new ones in.
Nice body work!