Does anybody know what the red heart with the squiggly EKG like symbol on the Nav screen means?

It seems to go away if I turn off traffic data.

I looked in the manual, but I didn't see this grapic mentioned.

Pat

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2007 3.0si, Black Saph, Black Nevada, Bambo,
Prem, Tech, Comfort, Third Row, CWP, Rear Clim, Rear Seat Heat