This is the second time its happened. First time was about 3 weeks ago and lasted 2 days then it went away. Same thing occurred tonight while driving in light suburban traffic. The sound is a single chirp like the touch screen touch tone but it sounds off every 5 to 10 seconds while the car is moving. Its an electronic tone from the dash and not a squeak. It stops when the car is stopped. There are no faults reported (dash or Hondalink) or warning lights/messages but the chirping sounds like a system is warning about something. I've checked all the usual stuff and was running in EV with a full battery, gas tank full, headlights on auto, radio and HVAC off. The car was built in May 2018 and has been driven 3900 km since July. I've not been in for service so the car has not been updated with any service bulletins. Any suggestions? Thanks.