Does your coolant level warning light come on under hard braking or around sharp turns? If so, your coolant level in the rad is low. Dump some water into the plastic coolant overflow tank and once the engine is cooled sufficiently remove the rad cap and top up the rad. Then keep an eye on the coolant level and watch for leaks because something caused the level to drop.
It’s a good idea with any car, rotary or not, to flush and fill the coolant system about once a year. I recommend doing this every fall, so your engine will warm efficiently and maintain optimum temperature during winter starting. If you’re in a hot climate such as Nevada or Arizona, you may want to perform the flush in the spring for better summer performance.