Question about Garmin Forerunner 305 GPS Receiver

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My Garmin Forerunner 305 doesn't go on when press the power button. It is fully charged. I can get it to activate pressing mode and lap/rest at the same time usually after several attempts. When the unit is on the light function works and I can turn it off using the power key. I should also mention the unit worked fine two days ago. Is there an easy adjust I can make to allevate the problem?

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You need a new battery. There is a small chance there is a hardware problem but about 99.9% of the time its just the battery giving up.

Posted on Jun 05, 2010

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It does not turn or or charge. Connected to laptop but got same results. Tried to install latest software but it would not the unit (forerunner 305). Message was that there was no unit connected...


Here's a few options: Soft Rest

- Hold down MODE + RESET for few seconds
- Press the Power button to turn on the device

------------------------

Hard Reset
(This will erase all of your data inside the device)

- Hold down MODE + RESET + POWER for few seconds
- Press the Power button to turn on the device

------------------------

Firmware Downgrade/Upgrade (2.9 > 2.8 > 2.9)
(This will erase all your data inside the device)

Software Downgrade/Upgrade

- Connect your Garmin Forerunner 305 to the computer
- Press the UP arrow button and hold while doing all the other steps below
- Press MODE + RESET for a moment (the computer will recognize the device)
- Dowload the Firmware from Garmin's website.
- Downgrade Firmware from 2.90 to 2.80. (You are still holding on that UP arrow button!)
- When the update is finished the Forerunner 305 should power on running the Firmware 2.80.
- Let go of the UP arrow button, disconnect the device from USB, connect it again and the computer should recognize it normally
- Update the Firmware to the current version.

Nov 04, 2012 | Garmin Forerunner 305 GPS Receiver

1 Answer

My garmin forerunner 305 turns off automaticly after a couple of minutes, and the battery is fully charge.


Try SW reset. Hold Mode and lap/reset for 10 seconds, then release and long press start until device restarts.
Should clean up default.

If not try hard reset, but you'll loose all data in device.
hold mode and start for ten second, device needs to off before.
Then keeping these, pulse press lap/reset.
You'll get a confirmation screen

Oct 04, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

My Garmin Forerunner 305 quit working at mile 15-ish during my 26.2-mile journey. There was a faint sound but the screen was blank. It doesn't seem to charge. I tried soft reboot by pressing on the MODE...


Try hard reset.

Hold mode + start for ten seconds (device off beforehand). Keep holding then pulse push lap/reset button.

You get a screen asking to return to default settings. You will loose all your data, but device should work then

Sep 26, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin 305 would not turn on after a ride. would


Reset your unit by pressing the "Mode"(reset/lap) and "Power" buttons at the same time. afte it turns on run system updater on computer

Jan 10, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Ive not had my garmin 305 long, it will not charge or turn on.


This might just need a 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 available by downloading and running the WebUpdater program. To update the software, please use the following link:
http://www.garmin.com/products/webupdater/

Sep 21, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin forerunner 305 won't turn off and keeps ringing .


You can reset the unit by pressing the and holding the mode and lap buttons simultaneously. This will power it off.

Jul 24, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

My Garmin 305 is not working. IT will not power on.


I've had the same problem for a few months. Only workaround is to press the lap and mode buttons together and then press the on button. Should come on in about 5 seconds.

Now can't launch training centre and no maps shown in garmin connect.

Jul 11, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin Foreruner 305 will not turn on or charge


I had the exact same problem and thought my beloved forerunner 305 had finally died. Try pressing the lap and mode keys simultaneously, and then power on. That may do a "soft reset." Worked for me.

Jan 05, 2009 | Garmin Forerunner 301

1 Answer

Garmin Forerunner 305


it wasn't working for me either , but the directions I received wasn't as accurate as some I've seen lately. Ensure:
  • Press mode and reset(lap) at the same time for at least 3 sec. (make sure you press it till you hear that click) 
  • after more than 3 sec. let both go
  • now press the power button and let go
  • wait 3-5 sec, then it will power up-
  • repeat if it doesn't work the first time, the key for me was hitting the power button after the reset and waiting for up to 5 sec after releasing the power button
  • the issue is getting it to work the way it should!
  • good luck!

Jun 27, 2008 | Garmin Forerunner 305 GPS Receiver

2 Answers

NO life in my Forerunner 305


There is a hidden recessed button on the right side of the Garmin. Press this button and it should reset the unit and it should turn on immediately.

Jan 13, 2008 | Garmin Forerunner 305 GPS Receiver

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