Sigh... 2009 Saab 9-7x. I have this same issue. The DIC lamps have grown so dim I can’t see them in daylight. They are fine at night when the headlamps come on. Normally they were brighter in the day, and dimmed at night. I have the dimmer knob rotated to maximum brightness, and it does work day and night, just not bright enough in the day.
All other lamps are fine- radio, HVAC, warning lamps, shift position indicator lamps, etc....
I’m guessing this has been fully addressed here, some sort of fault with the lamps or the voltage supplied to the lamps? Send the instrument cluster to a shop?
Or has there been new information uncovered?
I will add that sometimes my water temp gauge will instantly drop to “cold” - buried hard left and gauge warning lamp comes on. Then it MAY randomly reset itself. Or not. And if not, I can disconnect the battery momentarily and it will typically solve the problem. I have replaced the outside temperature sensor just because it was so cheap to do it and eliminate one possibility.
BTW- the camera makes the DIC look much brighter than it is. I’m also faced into the sun so the dash shadow helps. And the fact that it is running through test mode lighting all the lamps.
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