My navigation 'set destination' and 'route info' are greyed out so I cannot enter addresses in it

XL7 not XL-7 (the dash matters big time)
i'll guess its a dash.7
REDUX
in your post you said fuses are good (tested too)
have you checked and reseated the connectors on the OBJECTS that fail>?? (that is free to do)

we now learn many things fail on car,
even HEAD LIGHTS?????
and no statement of what works. in total!
does car drive perfect night and day?????
just a clue here, and win big. huh>?

I can't drive your car and see all those many things failing,& that are. ok .. and what does not fail....

but this car has CAN-bus (or the like)
a NETWORK for sure, and bus structured.

and does not work like some 1990 Vitara.
at all, not even close to same. (forget them...)
it's a BUS system.
each switch you throw sends a command on the bus.
it's failing I bet because of communication errors
that you fail to see because you did not use a real scan tool at the time of failure.
it must be scanned while failing !

cant fix it if its not broke,...(unless you drive
scan and log data. like i do all the time for all intermittent of any kind....)



does it fail engine running?
is running battery voltage at 13.3 to 15vdc
if voltage is low all computers in car will go nuts. (same with your cell phone)
this is a fact and what i check first?
valid battery voltages first.
2nd after fuses, (done already)
then scan it. using a real scan tool
not some relic.
a real tool can see all CAN buss errors
U codes top the list.

P1,p2, p3 and B codes too.... all seen.
failing.

you can buy tools
rent tools
or get the car scanned failing at any ASE shop.
car parts store may have junky or relic tools.
(i can name 10 that are)
some tools only do old federal P0xxx codes. say some old 1996 tool.

try a real shop and win. really
http://www.ase.com/Landing-Pages/Car-Owners/Find-a-Repair-Shop/Shop-Locator.aspx

• 1

  Turn the ignition switch to "ON" or "ACC."
  

• 2

  Press the "NAV" button on the center console, and tap "Accept" to open the navigation menu.
  

  
  

• 3 Tap "Destination Entry."
  

• 4 Tap "Street Address" to input a destination. If you would like to choose a point of interest, tap the "Point of Interest" option.
• 5 Tape the option to "Input Street Name In." If the current state or country is not correct, tap the "State" or "Country" button to change it.
• 6 Type the street name, then tap "List" to choose your street.
• 7 Input the house number for the address, and tap "Continue."
• 8 Input your city name, and tap "Continue." The navigation system will calculate the route and display a map.
• 9

  Tap "Go" to activate route guidance. The system will give you turn-by-turn directions to your selected destination.
  


car headlights.

Hello, be prepared to gasp. We know of factory updates costing $350 for Lincolns and accordingly cheaper for lesser Ford products. But is the Alpine a brand of stereo with Navigation or a car Model?

You can probably do an internet search under the topic "Navigation system updates" and plug in whether it is a car or stereo company.

i have the same problem with my 2003 volvo, did u fix it?

crutchfield.com

access enter new destination menu, then add new or delete existing

I had the same problem. What you need to do is clear the waypoint locations from the system. To do this hit the "nav" button, get to destination menu and locate the waypoint icon and touch. Delete all waypoint locations shows up at the bottom. Touch button, which will delete all waypoint locations and it will work again. Just to be safe, I cleared all of my stored locations including previous destinations

Try to check the region make sure it is under lower 48 states and check the map data base version if the map is outdated try to download the updated map date base.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

NAV unit uses a DVD disc. If its a copy, it may or may not work. I suggest you remove the NAV disc, unplug the NAV unit from power for 4-5 minutes, reconnect the NAV and try inserting the disc again to see if it reads. If it still does not read, another NAV disc needs to be inserted to verify its not a "bad" NAV DVD disc issue. If it still cannot read the second disc, the NAV unit is bad. The handbook feature needs the disc inserted in the slot 1 of the CD changer unit.

Installing the DVD Map Disc Your dealer/retailer may have installed the map DVD. If the map DVD was not installed, do the following to load it:
Read the following steps completely.

1. Turn the ignition on. The vehicle must be in P (Park) to perform this operation.
2. Press (power) to turn the navigation system on.
3. Press the NAV hard key.
4. Touch the Insert Map Disc screen button. The screen opens to access the map DVD slot.
5. Load the map DVD partway into the slot. The system pulls it in. The screen cannot be closed until a double beep is heard.
   Notice: Pressing directly on the navigation screen may cause damage. Repairs would not be covered by the vehicle's warranty. Do not press directly on the navigation screen.
   
6. To close the screen, slightly push up on the two outer corners until the screen is in position. Then push the screen in by pushing on the four outer corners until a click is heard.
7. Set the search area. See "Setting the Search Area" earlier in this section.

Ejecting the DVD Map Disc The navigation portion of the system cannot be used if the DVD map disc is not loaded.

1. Press the MENU key to enter the Menu options, then press the MENU key repeatedly until Nav is selected or touch the Nav screen button.
2. Touch the Map Database Information screen button.
3. Touch the Eject Map Disc screen button. The screen tilts, exposing the map DVD slot.
4. Press the eject button, located next to the DVD map disc slot, and the disc ejects. Pull the disc out. The screen cannot be closed until a double beep is heard.
   Notice: Pressing directly on the navigation screen may cause damage. Repairs would not be covered by the vehicle's warranty. Do not press directly on the navigation screen.
   
5. To close the screen, slightly push up on the two outer corners until the screen is in position. Then push the screen in by pushing on the four outer corners until a click is heard.