from what I can see there is a bulb to the left of the shifter. this link https://www.bing.com/videos/search?...72C967A64521C7133B217&view=detail&FORM=VIREHT show how to take the console around the shifter apart. At 2:48 you can see what looks like a bulb on the left. the clear plastic sort wraps around to that point which to me looks like it carries the light from the bulb and illuminates the letters/numbers. I personally don't have an automatic and I could not find any other videos that specifically talk about the bulb, although I will admit I only did a quick search. Hope this helps
They are illuminated in all of the automatic 10th gens from 09-13. You can get a new bulb at the Toyota dealer for like $3-$4 and the install is straight forward by following the links above. You just need to remember to swap the yellow plastic from the old bulb to the new one.