Garmin screen says xm receiver is not supportted

Hello,

If it is a matter of the user name or password on your account, there is a link under the login to get your login information sent to you via your email.
Or you may want to give Garmin support a call to assist with this issue.
www.garmin.com/us/support/contact

Hello,

If it is a matter of the user name or password on your account, there is a link under the login to get your login information sent to you via your email.
Or you may want to give Garmin support a call to assist with this issue.
www.garmin.com/us/support/contact

You indicated that the battery went dead. Does the new battery work correctly? That is, does it show a full charge when you've had it plugged in overnight and disconnect the power? Try plugging it into AC power overnight and verify that the battery is accepting and holding a full charge. If it isn't, then unplug and turn the unit on and allow the battery to run all the way down. Then charge it fully. This resets the charge indicator. You may have to repeat it once. I did this and was able to again show that both my new and my old battery were working o.k. They should show about 8.1 V fully charged.
About the Nexrad problem. In the past I would need to refresh the XM receiver when this happened. XM walked me through it and I have the steps, but the links are no longer working. Maybe it is no longer required since the XM link now jumps to SiriusXM. I've not needed to refresh for a couple of years and I suspect they eliminated that requirement.
To verify that the XM antenna is connected: Turn unit off. Connect the XM receiver. Simultaneously press "on" and "enter" keys- hold both until data screen appears, which takes about 5 seconds. Second line from bottom indicates if it is seeing the XM receiver. This helps isolate where the problem is- i.e. if you have a faulty receiver, bad connection or a software problem. The only contact I know of now is Garmin 800-800-1020. They can give you the XM contact if the problem is on that side of the unit. There is other data here which may be of interest to you on this page. Turn unit off to close this window.
If you need your XM radio ID, turn 396 on. Press menu, menu, scroll to XM, then right to Info. XM Receiver ID is there. Write it down in case you talk to XM or they give you a way to refresh. There are other menus you can get into but if they show a problem I don't know the solution other than contacting Garmin and I don't have my XM receiver home so can't verify the steps.

To receive XM weather or audio, the GPSMAP 740s requires a GXM 40 Smart Antenna with XM subscription.

The GXM 40 Smart Antenna (010-00730-00) is used to receive weather and audio service from XM satellite radio. For details on XM services please visit our XM webpage.

Once a GXM 40 Smart Antenna has been connected to the GPSMAP 640, the device can display the subscription information for the antenna.

From the Home Page in Boating mode:

1. Select Configure
2. Select System
3. Select System Information
4. Choose Weather Subscription

From the Home Page in Driving mode:

1. Select Tools
2. Select XM Services
3. Select XM Radio
4. Set the channel selector to channel 0
5. Select Radio ID

The subscription information will now be displayed on the screen.

The solution to this problem is at http://www.fixya.com/support/r6197735-no_detailed_maps_found_support_routing

http://www.garmin.com/garmin/cms/site/us/support

type in the issue and the garmin tech section can help you.

try changing the batteries or placing the device on charge and unplugging it, if both those don't work go to the support section on garmin's website www.garmin.com/support/

I cannot find any problem on the site,if you still can't get it to accept your data contafct support at Garmin

I had the same problem. With unit off, press upper left corner of screen firmly and hold while using another finger to press the "power" button. This will cause device to boot up in the "maintenance mode". I usually hold screen pressure until I see satellite icons appear. This may not be necessary.

You can go to this site try and get the update that should put the upgrade on there: http://www8.garmin.com/support/collection.jsp?product=010-00656-00
It is most likely a firmware problem that is causing it not to boot, and the update should fix the problem.