3 Week Old Fenix 5 - Wacky Altimeter

Three weeks old. Finally adjusted the altimeter and now it's all over the place. Used GPS to calibrate the altimeter and it looked like it got the right altitude.
All was good for about an hour and then the altimeter is all over the place -39,000ft, +50,000 ft with a few minutes. Manually adjusted it several times and each time within a few minutes it head off into nonsense land while sitting still in my home. Rebooted the watch. Downloaded the latest software. Nothing works. Defective or do I need to do something else?
Bought it from REI so I have 90 days to return if it's defective.

Thanks for any help!

EDIT - I accidentally originally posted this in the 5 Plus forum.

EDIT #2 - I did a total factory reset and this did not solve the problem.

0 seilogramp over 6 years ago

Was joking about getting your watch back. With the employee discount, I'd go for it.

0 JHinkey over 6 years ago

Yeah, I knew you were joking - my reply was a bit terse due to my annoyance with this watch.

I re-calibrated the barometric pressure last night and now the altimeter is stuck at 52 feed no matter what I do (change elevation by a couple hundred feet over one minute and it stays at 52 ft . . .). So it really is broken. Heading back to REI this afternoon or tomorrow morning to swap for another 5 or a 5 plus.

0 seilogramp over 6 years ago

Sounds good. Let us know how it goes.

0 JHinkey over 6 years ago

Since they (local REI) don't have any Fenix 5's in stock at the moment and the 5 Plus is on sale (but also not in stock), I was advised to wait until today to order a 5 Plus once it goes off sale (employee discount is 10% on sale items, 30% on non-sale items). So it looks like I'll not roll the dice a third time on the 5 and just bite the bullet and get the 5 Plus. Great watch otherwise - getting 2 weeks of battery time just to get to 50% charge left - way better than I had expected.

0 JHinkey over 6 years ago

Well, I've handed in my 2nd copy of the 5 in exchange for a 5 plus, so no longer going to post to this. Just too many failures of the 5 altimeter.