Yu Crew,

My ML is '00. The lights that are out are the little 1/4 to 1/2" marker
lights next to each air vent. Since they all went out at the same time,
I assume there is 1 bulb feeding all or maybe there is a problem with the
source of power feeding that row of lights.

As far as pulling a knob, the only knobs I have are for the fan
speed & directional option, feet, chest etc.

Are you saying pull these knobs, or pull the actual vents themselves ??

Please let me know.