Question about Garmin Edge 305 GPS Receiver

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305 Elevation Problem

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

Posted by on

  • swilson313 Feb 27, 2009

    my unit intermittently powered down so i opened the case to fix
    thecontacts. now the timer works great, but the altimeter doesn'twork
    and will read 65616 on occasion. how did i damage thealtimeter by
    opening the case?

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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.

Posted on Aug 02, 2008

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