Just downloaded my free maps on my new gps 465. when I start a new route I go to "where to?" then new adress and it gives me no data available.

Do a hard reset on your GPS. Download and install Garmin Express from Garmin. Plug your GPS into your computer. The software will identify your GPS and allow you to download new maps to it.

My probleme:

When you want to select (established) a route (Finding Location or Planing a Trip) the device machine can not calculate route and displays the following message: "Route waypoint memory is full". The device is Garmin 3760T.

I found the solution:

1. Start the device.

2. Touch "Wiew Map or Map"

3. Touch on bottom right of screen (Speed)

4. Hold your finger on top center of screen for 5-10 seconds (the speed semicircle between Trip A and Trip B). The unit would go into "Diagnostic Page".

5. Select "Clear all user data" and confirm.

Warning: will erase all user-selected data (Home, Recently Found, Favorites, Trip Planner, ....).

connect it to a computer and purchase the maps that you need,if it is new,it will download what it needs for free

Download updated maps and associated software directly from here
http://www8.garmin.com/support/download_details.jsp?id=209

Question: What should I do if my Garmin nuvi or zumo displays the message "No Detailed Maps Found That Support Routing" or "No Map Data Available?"
--> Answer: The "No Detailed Maps Found That Support Routing" or "No Map Data Available" message may appear on your device for the following reasons:

• The GPS device is missing it's unlock code
• The maps on the GPS device have been disabled

To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.

• If you see a "Can't Unlock Maps" message following this error, remove any microSD / SD cards in the device and follow the instructions below for Retrieving your unlock codes followed by the instructions for Creating an unlock file

• If you do not get the Can't Unlock Maps message then skip to the instructions for Enabling maps on the GPS device

Retrieving your unlock codes:

1. Log into your myGarmin account
2. Select Manage Maps
3. Select Details
4. The unlock code is located under the Installed Maps.

You do not give very much information to go on.
Perhaps you have downloaded some data such as routing or some other details from your computer via "MapSource". If so AND you have a mini SD card in the GPS, you have overwritten the SD card with the data from MapSource ...the map data on the SD card is now gone!
But the MapSource Data remains.
If you have copied the original data on the SD card, just copy and paste to re-place it.
If NOT you will need to contact Garmin to get a new SD data card.

What you have to do to prevent this in the future is to temporarily remove the Data Card from the Garmin GPS, then download the MapSource data from your computer. Then the MapSource Data goes to the GPS on-board memory.

sounds like you might not have the new map set selected

settings -> map -> map info (make sure the NT 2009 map is checked)

GO TO http://www.wtorrent.com/search/?q=Garmin%20City%20Navigator%20North%20America%20NT%202009

You can download new maps..........free......................but..........

I had this problem last year with my garmin 200 and when I called they said that I was out of the 60 day time window for a free map upgrade but they would give it to me anyway. They gave me detailed instructions on how to download a new map free of charge but they didnt explain which selection replaced what I already had on mine.
As a result, I downloaded the wrong maps and have much less detail. Even though its the "2009" version, its less acurate than my old maps were. But its worth a shot, better than paying for them.

If you don't have "Detailed Maps" for the area you are travelling in, it will not have adequate map detail to create routes that are not on major highways.

To remedy this, you will need to use another of GARMIN's products... I believe it's called Mapsource City Navigator, and will have to be purchased for the area you are concerned with. This PC software will then allow you to load additional Map Data onto an SD card, which will slip into the slot on the left side of the unit.

You can find out about it at their website www.garmin.com then look in Maps