It is a 2004 limited. Not sure of the model on the Navigation unit. It is what came in the rig stock. He may have updated the map once.
On the GEN4 (2003-2005) Navigation unit, there is an OVERRIDE feature in the SERVICE menu.
You have to do this sequence before you start driving.
Press the MENU button
Tap the left top corner of the screen then the bottom left.
Repeat this sequence and the SERVICE MENU will appear.
Press and hold the Override until you hear one beep and the Override word will be highlighted (black letters).
Touch the BACK to return to the Volume menu then click OK.
Not all features are available but basic search (for Restaurant.. ATM... Gas Station, Parks...etc) or input the destination are not grayed out.
This Override will be active as long the engine is running. When you turn off the engine and remove the key the Override is terminated.
I have the 2005 Camry, Navigation Model (E7003), DVD MAP v4.2 and it is working for me.