Seems something is wrong with the Elevation function. I do a bike ride during lunch at work, starting from the parking lot, about a 10mile look and end at the same point. After I upload the data is shows a resulting elevation delta of about 30ft. This is not a hilly area I am riding in so do not expect much margin for error. I would expect this would be accurate with a foot or so. Anyone heard of seen this problem
Sorry to have to break (no pun intended) this to you, but I have had two units do this. Once this problem starts eventually the Elevation field will display and stay at 65616. The problem is with the barometric altimeter and cannot be fixed without sending the unit to Garmin. When you call Garmin technical support, they will have you do all sorts of resets - be patient - eventually they will concede that the unit is busted and give you an RMA. Both times this happened was after the unit got a little roughed up (one time dropped it, the other time was mountain bike tumble) - evidently the altimeter is the least robust part. Good luck.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Same for me very often. I think this is due to starting a road without waiting long enough that sattelites are acquired.
In fact 3 sattellites allow to compute position, 4 are necessary to compute position plus altitude.
Accuracy of position and altitude is much better from 5 sattellites acquired.
So I advise to start your device OUTDOORS, in an open place (not near walls as it masks sattellites) and wait until screen automatically moves to run mode, meaning enough sattellites are acquired. You will get better chances to have a good accuracy.
Also on Garmin connect site, when you load your ride, you can correct altitudes automatically using real maps.
Could be yes. There are contacts inside the device that become sensitive to vibrations after a while.
I have seen on Internet that it may also be due to USB plug that acts on these contacts. Anyway in this situation there is no other way than opening the devices and soldering contacts or adding wires to replace these contacts.
As opening device is not at all easy, I recommend you send your device to Garmin support.
Otherwise please check the relevant procedure on the internet
OK, There is a battery problem where the contacts become loose within the unit, i opened mine and followed the instructions i got on this site...MTB gurublog If you decide to do so..however if the 305 is in warranty contact garmin.com and ask for new unit... they accept the problem is widespread.
I have the same garmin, and have the same problem.
The high changes even during flat runs so when added you have this overamount of climbing.
I just reduce the points of the track and then the addition is more accurate.
My problem now is that the GPS stops working during runs (turns itself off). Awful!!!
I have the same problem. When I contacted Garmin they quickly diagnosed that my battery disconnects as a result of vibrations (like the ones you feel on your handlebars). Since I purchased this device over a year ago, their solution was for me to send it to them and pay $100 to get it fixed. Now one of the guys I ride with is having the same problem. I am very disatisfied with the Garmin 305's reliability. I'm not giving Garmin any more cash. (I paid $350 for this GPS 18 months ago!)
Does anyone know how to open the 305 so I can resecure the battery?
Found a fix, by resetting all user data my problem was fixed.
Garmin Edge 305
Power off device and hold 'mode + power'
Power off device and then hold 'page + enter + power'
Hope this helps!