Booting up
I always get the caddy symbol as the Nav system software is booting up.
Also, I use the nav system regularly.
I've discovered something very cool about it recently. I call it "the ADF" function after a similar instrument in light aircraft. It happens when you have a POI (point of interest) located, but the GPS data base doesn't have the necessary roads to get you there.
When the roads disappear, you get a message confirming that fact, and you get an arrow pointer that gives you the relative bearing to the POI, plus the distance.
This works best when you have the nav set up for "Track Up".
In our case, we were cruising through the hinterlands around the backside of Lake Conroe close to Montgomery, TX. We were on solid two-lane blacktop, but all of a sudden, the roads in the data base just ended. The ADF arrow popped up and pointed to about 1 o'clock off our nose, and indicated 7 miles to Del Lago (our destination). The road twisted and turned, the ADF arrow continued to point exactly to Del Lago. When the ADF arrow pointed to 3 o'clock and indicated 1/2 mile, we turned right, and bingo! There it was.
It makes a good case for storing interesting POIs.