The lights blinking means that the ride control is inop., or has a problem. Since you can no longer buy the replacements with the ride adjust, you shouldn't really worry about it. My suggestion (and plan for my own car) is to get the Tockio Illumina 5-Way adjustable shocks.
nissan still has replacements but very expensive. last time i checked they were $800 per front and $200 per rear. i would get the Tockico 5-ways, i went that way after i found out the price of factory new.