Garmin diagnostics screen / reset

Appreciate the info..
Thanks
NickJr

Very cool little easter egg! A lot of information, some of it would be nice to have on a regular screen, like the temperature. Some of the other screens, well, a bit more cryptic, but cool none the less.

Thanks!

nuvi360 user

Works on my Nuvi 660. I was tring to get some information such as software version and was able to obtain this information. It is really neet. Wonder why Garmin did not include this in their User Manuel.

cjames

Same for my 660. Excellent tip.
Randy Freedman
Bethesda, MD
Email: rkf@fastermac.net

The value of this is - it will do system reset that is restore the Nuvi to its orignal factory settings - wiping out any updates or pois you have added since you bought it.

Do you mean that you have this option or if you do this it will reset all your stuff?--------Earl Leeson

It does a system re-start after using this menu, but your previous user settings and POIs, etc remain intact.

Thanks. I was afraid it would rest everything and you had to start over.-----------Earl Leeson

Wow, that worked with my C340 also. Nice tip. Thanks very much for that one.
BB3

When you go into advanced tab it will let you reset to the factory defaults - does not do this automatically - sorry for the confusion.

neat! After hitting the exit button, and reboot - I got a little concerned when the speach was garbled. But all was fine after a complete power recycle.

Thanks for the great tip.

I tried this tip for the heck of it on my 2720 and it didn't work. Oh well.

Michael

Cool it worked for the c330 too.

I tried it on my c320 and it worked there too. Not sure what most of it is for (different colored screens and all sorts of stuff), but what the heck. It is fun!!!

Indeed, a very cool easter egg. Worked fine on the 660. Thanks!

That's pretty neat. Has anyone found any other diagnostic tools or options on the nuvis?

I tried this on my 660 with the latest ROM update and it did not work.

Works on the c503 too!!!

It works very nicely on the 360. Lets you get down into the good stuff - which I left alone!
Thanks!

660-frozen in version info. screen unit wont shut down.
any ideas ?

My 660 did the same thing. I just connected to my PC with the USB cable and it fixed it.

I will try it Nick thanks for the reply

Worked on my C530. Not a whole lot of usefull info though.

Can someone post a complete set of the information you get on a nuvi 660 when going into these screens? Maybe some screenshots?

Works on the Zumo as well.
.

Hi!
If you Pressing Moving average on trip meter for few seconds and yougo to diag statistics menù.

You can find this trick on my site, but it's in Italian, I'm sorry!

http://www.webalice.it/visanet/funzioni.html

Bye bye

Thanks and appreciate the information. I am new to this, so always looking to see what I can do this unit. I have the Garmin StreetPilot C550. There is a lot of informtion on the GPS that is not in any other instruction booklets.

This also works on the new Nuvi 670 (which is basically a 660 but with the FM transmitter installed in parts of the world where the 660 didn't have it) but is there any way to save the changes you make?

I am trying to adjust the FM power output to get better reception on my car radio. The car is a Jaguar XK8 and the radio antenna is quite a long way from the Nuvi, so every milliwatt helps!

There are several settings, and changing them improves things no end. But the changes are lost after powering down, and I can't see any way to save them.

Any help greatly appreciated! Thank you.

I pressed the Moving average for a few seconds and got a screen called "Shutdowns" with three entries labeled "RTL Trap" and the date. Clicking any of those lines brings up a list of registers and values. But can we do anything with this information? And why is my system generating RTL Traps (whatever those are) anyhow?

Two screens further in I get the memory statistics. The system is generating mallocs like there's no tomorrow. What's it doing with all that memory, and when does it do garbage collection? Looks like a memory leak to me.

Possibly heartening, though I wish I knew what it really signified, I have a "mempool size" of 9,175,040 and "mem in use" of 1,950,860. Does that mean I have plenty of memory to spare?

I'm afraid to try anything. If I keep going I get to the GTM screen which has buttones "Sim", "Test" and "Norm". What do they do? Dare I try it too?

cool easter egg!

Another way to get to the Nuvi diagnostic screen:
If the Nuvi is already on press and hold the moving average speed (about the center of the screen). The diagnostic screen will come one after a few seconds

Works on the Nuvi 680 as well. The Audio Output Test Page has a check box for "FM Sweep." Any more experienced users know what this does? Afraid to try it and screw something up royally.

This is a diagnostics/debug screen for the engineers during test. "Shutdowns" are basically Nuvi firmware crashes.

So for example I can force a shutdown by removed all my foreign languages files(I only speak English and little German) from my Nuvi then picked one of the languages I removed as the default. The Nuvi will just "shutdown". By connecting back to USB I can copy over the language I picked. Reboot the Nuvi and I am fine. I mistakenly did the above a few months back when I was clearing unnecessary files in the internal flash memory.

The registers are the values of the 32-bit registers in the strongARM processor recorded just before the shutdown. They have no meaning for us since we don't have the source code but can be used by the firmware engineers to diagnosis a hardware or firmware problem.

You're correct that about memory usage, but keep in mind we don't know what OS the Nuvi is using (VMWorks, Linux? etc..), so we have no idea what mechanism is used for garbage collection. Generally all code running is stripped to the bear bones with embedded products so we can't parse out strings that identify the OS. I just see many references to Garmin version 4.40. I doubt it is a memory leak, but it is possible.

The base Nuvi 350 uses about a 1 Gig for maps only so the OS and components are using much less. The maps are huge and there's a lot of processing power needed for map display and TextToSpeech.

Over the years I have worked on diagnostic software on various computers and micro controllers.

Lots of great information in the screens. I am not certain what many of them do. One thing is the speaker tests. My 680 appears to have only one speaker but there are test for a left and right speaker. Another cool thing is that it appears you can change some settings such as the FM modulator power. Changing the settings seems to work but how can you save the changes you make.

It's a diagnostics screen, not a change settings screen for users. So I doubt you can save any changes you make.

This worked on my C330 too.

Works on my nüvi® 350 as well

The left/right speaker adjustment works when using the headset jack for external speakers or headset.

RT

You can obtain the latest firmware (3.7) by using Garmin's "Webupdater". I believe this program is available for download on Garmins site. I recently updated my 660 and the diagnostic screens work OK. Touching ONLY the time is tricky because of its closeness to the little wrench icon.

Miki

I did look at both these special diagnostic screens on my nuvi 350 but i didnt change anything. now every time i start up my gps it takes long for it to locate the satelites. did i do something wrong?

You did not do anything wrong. I suspect the long delay occurred after a firmware update. Sometimes the Nuvi's memory needs to cleared after a firmware upgrade that changed the address map.

Please backup any user waypoints and custom POI then:
just do a hard reset..push and hold the reset button on the back of unit just under your open antenna.

Hi,

I just got a new Garmin Nuvi 660, preloaded with European map version 9. I live in Edinburgh, Scotland. The nuvi 660 I have got the software version 3.7 (updated via webupdater). When I try a route a bit long with a route setting set to "Faster Route" it starts calculating the route and gets stuck at around 85% (repeatedly) and then returns this error message: "Route Calculation Error: Not Enough Memory". I have been phoning Garmin US and Europe with not much luck. They try to convince me that this is ok. I am just wanting to know if anybody else is experiencing the similar problem and have found a solution for it? Could I do something by using the diagnostics screen?

Regards,

Yavuz

And I have not had any experience with the issue you note.

Not available for 27xx and 28xx

Worked for my c580.

thanks for the info

This easter egg works on the Nuvi 680 as well, but with SW version 4.10, hold finger on clock for > 10 seconds.

r0b01