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Garmin 478 powers up then 3-5minutes powers down then i will turn on again then will turn off again

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The 478 does have a user replaceable battery, There appears to be an issue with the recharge circuit/sense on these units. Contact Garmin. There is a software upgrade.

That said, batteries typically only last a year or two so you may be at the end of its service life.

Posted on May 19, 2009

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Hello mrbill254,

The rechargeable battery in your GPS receiver may be going bad. Over the lifetime of the battery the amount of operating time you can expect in between charges will naturally decrease until the battery gets to a point where it is no longer able to power the unit. That may be what is happening.

Unfortunately most GPS batteries are not considered to be user replaceable. You should contact Garmin to find out about battery replacement service.

Best Regards!
Ken
"Go Ahead. Use Us."

Posted on Jun 18, 2008

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1 Answer

Nuvi will not turn on


What model Garmin Nuvi ???....
On occasion, your Garmin GPS may experience technical malfunctions, including failing to power up.
When this happens, perform a manual hard reset of the unit.
A soft reset entails holding the power button until the unit powers down, and then pressing the it again to power the device back up.
However, when the unit won't turn on, a soft reset won't work. In this case, a hard reset is the only way to get the device up and running again.

Unplug power and USB cables to disconnect all sources of power to the unit.
Place your thumbnail into the groove located below the Garmin logo on the face of the unit.

Pry the faceplate off using gentle pressure.
Press the reset button and hold for approximately 3 seconds.
When the device is facing you, the reset button is located in the middle of the right-hand side of the front of the device.

Snap the faceplate back into place.
Press the power button.
Your GPS should now turn back on.

Garmin Nuvi With No Power
A Garmin Nuvi is a type of GPS device that can help you find your way around when traveling by motor vehicle.
You can mount the Garmin Nuvi inside the windshield of your vehicle and allow it to acquire the satellite signal.
This tells the device where you're located.
After that, you can find simple directions to get to a new location by entering the address into your Garmin Nuvi.
If you find that your Garmin Nuvi has limited or no power, you will need to do some troubleshooting to get it to work.

Change the fuse within your unit's power cable.
If your Garmin Nuvi has no power, the fuse may be out, meaning the device cannot be charged.
Plug your Garmin Nuvi into the power supply of your vehicle and turn the vehicle on.
The device cannot charge and get power unless the vehicle is running.


Allow the Garmin Nuvi to charge fully.
You might be unplugging it from the power source too soon, which could cause the device to have little or no power.

Regulate the temperature of your Garmin Nuvi.
It may not function properly if the temperature is too cold, below 32 degrees Fahrenheit, or too hot, above 113 degrees Fahrenheit.


Aug 10, 2013 | GPS

1 Answer

I power my nuvi 255w on and it says loading maps but doesnt and it makes a beep and powers off. there is no reset button on this unit and i don`t know what to do to get it to come on and stay on? ty


Hold the power button for more than 20 seconds till it restarts - this is a soft reset. Then try again.

If that doesn't help, do a master reset which clears all user data back to the factory state. From powered down, turn the Garmin on while holding the right bottom corner of the screen for at least 20 seconds. A question should appear if all user data should be cleared. Then try again.

When it works again I would suggest to update the software in there till the latest version available on Garmin.com

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1 Answer

Turned on the Garmin nuvi 1200. the Garmin logo comes up, loading maps comes up then it goes blank and begins the cycle again. I have held the power button down nothing. I have touched the bottom right of...


Hi! Please try inserting a paperclip on the reset button. Press hold for atleast 15secs. and this can resolve the problem. Hope this helps and thank you for using FixYa!

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1 Answer

Cant turn on backlight


Click the power button again - don't hold it down, just tap the on/off button. The backlight by default is shut off when the unit is powered up. To turn it on you press the power button again

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2 Answers

Garmin won't turn on


I hope this helps, I had the same thing happen today. I noticed on the face under the word Garmin you can pop the face off and underneath on the right side is a reset button I held it down for 10 seconds popped the face back on and pressed the power button it came on. I hope this works for you.

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1 Answer

Garmin nuvi 200 frozen screen


with the garmin off, hold down the right bottom of the screen and turn the garmin on, it will then ask you if you want to perform a hard reset. Choose yes and that should fix your problem.

Mar 16, 2009 | Sony NV-U71T GPS Receiver

1 Answer

Garmin died and will not turn on


Waking up your c330...

If you left your Garmin c330 on running the battery will have 1% life left. If you turn c330 back on again, it will flash screen for 3 seconds then die, even charging it at this point will not wake it back up. TO BRING IT BACK TO LIFE... plug in the power home or car into Garmin c330. There is a tab in the front Garmin gray frame of your screen. You must take like your fingernails and under the logo "GARMIN" pull the whole gray plastic frame off. Underneath the plastic frame to the right hand side. There is a "RESET" button. Make sure power is plugged in while hitting reset. Your battery should come back to life. Cheers

Mar 12, 2009 | Garmin StreetPilot C330 GPS Receiver

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