Thanks to the great threads on replacing the heated seat dash lights, I was able to get those bulbs replaced, but I still had a burned out Downhill Assist light. I tried the same method as the heated seats, but you just can't get a hold of this switch as easily as the heated seat switch. I did a little searching and found a picture of the Downhill Assist assembly removed from the dash to make sure it could be pulled from the dash like the heated seat switches (the switch is blue):

[img]http://www.skjos.net/lexus/Down%20Hi...ton%20Back.jpg[/img]

^why isn't this picture working?^

Based on the picture, it should pull straight up from the dash, but how when you can't get a hold of it? Here's the DIY hint: fishing string or floss. I was able to get fishing string "fished" around the back of the switch and then with a quick yank up the switch popped right out. The light is exactly the same as the heated switch bulb (P/N 90010-01061) and is easily accessible once the switch is popped from the dash. After replacing the light simply press the switch back into the dash and you're done.

Here is a link to the heated seat bulb replacement: https://www.clublexus.com/forums/gx-...placement.html