It happens occasionally with my 500 as well, and although it will reset itself in time, the two warning lights annoying me.
So I went looking for a solution and found that turning the ignition key several times (about 6) in rapid succession without actually starting the engine will reset the system, although it can take a few tries...
This worked for me. I had the same problem with my Punto Evo Dynamic 2010 1.4. I tried the key thing and the lights were gone.