I have an '04 RX, it has rarely been in the sun and is a great vehicle.
I noticed that the dashboard is cracking on the passenger side above the airbag. Not major but a few 2" or so cracks running top to bottom.
Any suggestions on what I can use to prevent this from getting worse? I have tinted windows.
Thanks.

 

You might have a dash repair guy fix it to prevent further damage.

 

I've used super glue and a needle to stop the progress of a crack in my dash. Put the glue on the tip of the needle and put it IN the crack making sure you get the glue on both sides and at the apex of the crack. I did this three years ago and the crack has not progressed. YMMV