Question about Garmin Edge 305HR GPS Receiver

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Garmin edge 305 heart rate monitor

Has stopped working. I have put a brand new battery in thesender and still nothing on the screen.

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  • avstiles May 19, 2008

    My heart rate monitor on my Garmin 305 was reading too low so I changed the battery in the strap and now it isn't working at all. I followed all of the troubleshooting in the manual.

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I had the same problem, but it was unresolved using the above info. I finally went into the menu (Settings / System / Accessories) and selected Restart Scan. All is well now =)

Posted on Jul 03, 2010

  • Cyndi Webb
    Cyndi Webb Jan 06, 2013

    Awesome! It works now!!!!! Happy me :) Thank you

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Check the battery polarization and connectors in the battery holder if anything blocks the connection (humid, stain, corrosion etc).
if you need user manual you can check at link below
http://www8.garmin.com/manuals/967_OwnersManual.pdf

Good Luck

Posted on Feb 08, 2008

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Related Questions:

1 Answer

How do i change a battery in a garmin 305


Hi David!

From your Owners Manual (Page 54)
http://www8.garmin.com/manuals/984_OwnersManual.pdf

REPLACE THE HEART RATE MONITOR BATTERY

"The heart rate monitor contains a user replaceable CR 2032 battery...
Locate the circular battery cover on the back of the heart rate monitor. Use a coin to twist the cover counter-clockwise until it is loose enough to remove. Remove the cover and replace the battery. Be careful not to lose or damage the o-ring gasket on the cover. Then use a coin to twist the cover back into place."

Hope this helps.

Jan 16, 2011 | Garmin Forerunner 305 GPS Receiver

1 Answer

Battery change, now no signal


I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80



May 24, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Heart rate monitor not working


Remove the batteries and clean the battery contacts inside the device with a common pencil. Then insert new batteries that you know are fresh. That should fix it. If it still won't work for you go to Garmin.com and send it in for repair. Joe

Mar 19, 2010 | Heart Interface Garmin 305 Gps Heart Rate...

1 Answer

I haven't used my Garmin Forerunner 305 for over a year - but have just started using it again. It wasn't picking up my heart rate from the HRM, so I changed the battery in the HRM but it is still not...


I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80


Hope this helps......

Feb 09, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Heart rate not being received after changing battery.


I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80


Hope this helps......

Jan 17, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Bpm isn't showed, i have changed the batery and bpm doesn't apear


I just helpped some one else with same probelm, try this see if it works.


In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80


Hope this helps......

Jan 17, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

My garmin forerunner 305 HRM suddenly stopped working. I thought it was a bad battery so replaced that, and still nothing. Any other suggestions?


I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80

Nov 01, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Garmin Edge 305 HRM problem


Try to pair his unit with your strap and it won't work, you have a bad strapl

Feb 16, 2009 | Garmin Edge 305 GPS Receiver

5 Answers

Garmin edge 305 heart rate sensor does not work


the rescan worked for me, didn't know it existed, briljant. Follow list below:settings/system/accessoires/rescan
I love google today;o)

Mar 21, 2008 | Garmin Edge 305 GPS Receiver

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