Question about Garmin Edge 305 GPS Receiver

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I charged my edge 305, then I tried to turn it on later, but nothing happened

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  • 81 Answers

Try soft reset it :
press mode and lap/reset for 10 seconds, then release and press start for 10 seconds it should restart

Posted on Sep 16, 2010

  • robin_f_brow Jan 09, 2011

    thank you, this fixed my problem too...

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Posted on Jan 02, 2017

  • 81 Answers

SOURCE: I charge my Edge 305, then I tuynr it off. Later

Got the same issue. Either Soft reset by pressing mode and lap/reset for some seconds (up to 10), then press on/off for 10 seconds, it should start once.
Mine did start once like this, but after stopping did not start again. So only hard reset did solve the issue :
press on/off and mode together for some seconds, (device should be off when doing this) then press a pulse on lap/reset.
This erases all the data inside, including profiles but then it is working well.

Posted on Sep 04, 2010

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1 Answer

The edge 305 unit does not answer to hard and soft reset command


Just to be sure ...

Here is the way to reset the Garmin edge :

Soft reset : hold mode and lap/reset buttons for 10 seconds
Hard reset : device should be powered down, hold start and mode buttons for 3 seconds then pulse press the lap/reset button.

After soft reset, you need to hold start button for up to 10 secs before it starts.

After hard reset, you will loose all your data, including profiles

Now if this does not work, you should check battery. Does the device charge when plugged on PC ?
If it does not, either battery is out of order or the contacts inside the device re broken. This may happen if device is used in continuous vibrating environment like mountain bike.

Changing battery or fixing contacts issue is explained there :

http://blog.mtbguru.com/2008/11/06/surgery-on-the-garmin-edge-305/

Jan 04, 2011 | Garmin Edge 305 GPS Receiver

1 Answer

I charge my Edge 305, then I tuynr it off. Later on, I tried to turni it on, but nothing happened.


Got the same issue. Either Soft reset by pressing mode and lap/reset for some seconds (up to 10), then press on/off for 10 seconds, it should start once.
Mine did start once like this, but after stopping did not start again. So only hard reset did solve the issue :
press on/off and mode together for some seconds, (device should be off when doing this) then press a pulse on lap/reset.
This erases all the data inside, including profiles but then it is working well.

Aug 23, 2010 | Garmin Edge 305 GPS Receiver

2 Answers

My garmin 305 edge won't turn on. I had it for about 2 years.


I "over charged" my Garmin one time and it wouldn't turn on. There is a way to reset it so it works, but right off hand I can't remember how to do it. I have an email in to tech support. Let you kmow what I hear.

Mar 29, 2010 | Garmin Edge 305 GPS Receiver

1 Answer

I charged my Garmin 305 and the screen read fully charged. I went to turn it on and there is no power. Now I can't even charge or download anything. It is fully dead.


Attach your unit to your computer and go to garmin.com, download webupdater and then go to my dashboard on garmin and follow the instructions

Oct 04, 2009 | Garmin Edge 305 GPS Receiver

1 Answer

Won't turn on or charge


Press Mode (bottom left side button) and Reset (left front button) simultaneously, let go, then press On (top left side button).

Jul 28, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin 305 wont power on, wont charge on cradle


Same thing happened to mine. Put the unit in the cradle (just like you are going to recharge it) and press the reset and mode button at the same time for 3 seconds. This will "wake" the unit up.

Mar 30, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

I am charging the Garmin Edge 305 for 24 hrs or for at least over night, yet the Edge 305 will show 2 to 3 bars of charges and will last maximum 1 hour of riding time. What to do?


Discharge completely device then charge again for 8 hours.

If not working, then attempt Soft reset :
Hold mode and lap/reset for 10 seconds then release.
Start the device then by long press on start. DEvice should start and charge then

Mar 16, 2009 | Garmin Edge 305 GPS Receiver

1 Answer

Garmin 305 is off and wont come back on.


You have to soft reset it first, and if not solving, then try hard reset.

Soft reset : hold lap/reset with mode key for some seconds
Hard reset : hols start and mode, then pulse on lap/reset.

after soft reset hold on/off for up to ten seconds before it starts.
after hard reset all data are lost

Mar 15, 2009 | Garmin Edge 305 GPS Receiver

12 Answers

Forerunner 305 won't charge


Question: My Edge or Forerunner 205/305 won't power on. Is there a soft reset that I can do?
-----------------------------------------------------------------------------------------------------------------------------------------
From the Garmin web site.
--------------------------------------------------------------------------------------------------------------------------------------------- Answer: If a Forerunner or Edge 205/305 is unable to power on, a soft reset can be performed to un-freeze it. This will not erase any user data and is most effective if the device is connected to the computer while performing the reset.
To reset the Forerunner or Edge 205/305:
  1. Connect the device to the computer using the USB cable
  2. Press and hold the mode and reset (lap) buttons together for 10 seconds
  3. Release and wait for 3 seconds
  4. There should be some indication of battery charging (either Finished or In Process)
  5. Power the device on while keeping it connected to the computer
In addition, please make sure that the device has the latest software version

May 26, 2008 | Garmin Forerunner 305 GPS Receiver

1 Answer

Distance and average speed don't compute.


My solution included changing the battery in the cadence sensor (GSC10). You might not need to.
1. After changing battery, take bike outside. Turn on Edge 305 to acquire satellites (might not be necessary..)
2. Press reset button on GSC10. Should see red/green flash.
3. On Edge 305, go to SYSTEM.
4. Scroll down to ACCESSORIES.
5. On Accessory page, scroll to bottom, under Cadence Sensor, and press RESTART SCAN.
That fixed my Edge 305 - cadence and speed do appear now.

Apr 07, 2008 | Garmin Edge 305 GPS Receiver

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