My biggest tips for anyone is don't get this crap!
It has been nothing but a disappointment for me so far.
If you want navigation get a kenwood. The JBL uses the tom-tom type soft ware and it sucks but. The kenwood uses garmin. Much better.
And by the way the upgrade to the maps has to be done by the dealer and will cost about $200 for install. What a crock of shit.
The only good thing is the stereo with the sub kicks ass but the rest sucks ass.
I enjoy the nav - it's good enough for me.