Even the stand alone GPS systems work the same way. other than you can get lifetime updates, the system does the exact same things as the installed GPS. If your Manuf. installed GPS is running Garmin software you may be able to go right to Garmin and buy the update. I personally like the integrated GPS over the standalone because they are more user friendly. My 07 Chrysler T&C has the integrated GPS and I like it. I still haven't updated it yet, I may do it just to have updated maps, I certainly wouldn't do it every year though!
