Thread: Using TMC in Garmin nuvi for free

Looks like u used the wrong code, cause when u have the GTM-21 with the latest firmware it should show the name of the traffic provider in the Netherlands. Please note, u need the UnitID of your TMC receiver, not from the 765
Removing the other code is described here in this thread, basically generate a code with VenID 0 and not 1

Originally Posted by tom1807

Looks like u used the wrong code, cause when u have the GTM-21 with the latest firmware it should show the name of the traffic provider in the Netherlands. Please note, u need the UnitID of your TMC receiver, not from the 765

That's exactly what I did. In the mean time I have acquired a nüvi 775T as well, which behaves in just the same way. I must add that I have not used the nüvi in the car yet, just placed it behind the window at home for satellite reception while connected to the GTM21.

Originally Posted by tom1807

Removing the other code is described here in this thread, basically generate a code with VenID 0 and not 1

Thanks, will try this. Do I have to do this with each one of the 3 codes you mentioned in post #115?

Originally Posted by isg

TMC Bulgaria - it's free - FID 30721, PID 1, RgnID 1, VenID 1 - life time. Still not working properly, but it will be improved as per providers statements within 2-3 weeks.

Get it here for free:

Code:

Please Login or Register to see the links

Possible you have to select United States to see it

Thanks man! Worked 2nd code I tried! Garmin 2x5 series, GTM 25

Anybody know how to master reset subscritions on a GTM-25? Seems there is a maximum number of entry attempts (16?).

Installed "Australia All" then, then trying "Europe all" got error "Cannot add subscription. You have already added the maximum number of subscriptions". The GTM table at that point had 16 entries, 8 x Australia states listed individually and the first 8 EU countries.

To remove a subscription you still need to add one (eg Vendor ID = 0) so catch 22 and still getting errors and unable to remove single subscriptions. Interesting however removing "Europe All" still gave the error but unit then rebooted itself and the 8 EU countries were gone.

Adding "US & Canada All" then worked OK and can now see Aust x 8 and these two entries (US & Canada) for a maximum of 10 in the table....but still getting error trying to add anything else including a single subscription.

Any ideas?

What's about Austria & Switzerland? Is there TMC-Pro for free?

Originally Posted by keith13b

I have the same problem - Nuvi 680



I went out and bought another powercord w/ traffic antenna. Same problem. The unit itself seems to only use MSN software. Do I need to change my firmware to allow other traffic subscriptions? Also the above sequence "menu Tools, Settings, Traffic, Subscriptions" does not exist for my Nuvi 680.

The best I can do is "Tools - Navigation - Avoidances - then check the traffic box

Just stuck on how to get a TMC ID or which cable to buy exactly. Those things aren't cheap and I don't want to keep buying them using trial and error!

Any help is appreciated.


Edit: Found a GTM-10 10 digit code. It stays the same regardless which antenna I use though.

You need a GTM21 - about $40.
Plug it in.
Power GPS
turn off gps
Use garmin webupdater to ensure gtm correct firmware
power up gps again with gtm21
you should have options to add subscriptions.

PS most gtm come with a subscription.