I have noticed that my Clarity will on occasion start to use gas to charge my battery, even when the battery is adequately full, and I have NOT switched on HV mode. Has anyone else noticed this? Is there a way to "force" the car back to EV mode? I have switched HV mode on and off when this happened, and this still did not stop the car from choosing to burn gas. It did eventually turn off and switch to full EV mode.