Did you try changing the batteries?
Only in one pedal so far because that’s all I had to hand.
I have actually ordered (free of charge from Garmin) a pair of new battery doors as there was a known issue with the original ones, so who knows this might solve everything… Failing that, can the pedals be sent away for repair to Garmin?
Hey! I’m running Zwift on my PC with Win10, Ant+ usb stick and garmin vector 3s. My HRM connects fine via Ant+, but the vector does not pop up in Zwift. They do connect fine via Ant+ to Sufferfest, however.
Consider this a +1 to the “PC+Zwift+Vector 3+Ant+” - problem…
@alessusnik There are a handful of us with the problem. I have tried reaching out to Zwift and to Garmin several times last year. Neither party wants to take responsibility for the problem. The Vector 3s will connect to my phone via bluetooth, but they will not connect to Zwift on my computer. I would like to find another app that can recognize ANT+ accessories to do a test. If that app will not connect to the Vectors I’ll assume that it is a Garmin problem. If they do connect I’ll assume that it is a Zwift problem.
I normally ride on my Neo, but I would like to ride on my rollers from time to time. That hasn’t been possible since the Vectors aren’t found. I’ve tried two different dongles, and I’ve placed them just a few centimeters from my Vectors. There is no log for me to show you because they are never found.
I do enjoy your racing videos. I’ve even raced against you once or twice, but you destroyed me.
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Vector 3S sucks
Same problem here.
Vector 3 works fine with fēnix 5X and Forerunner 920XT via ANT. However, Zwift only picks up the pedals via Bluetooth and fails to recognize them via ANT. Everything else works fine (via ANT) in Zwift: cadence sensor, heart rate monitor, and Tacx trainer.
I tried with two different ANT dongles, even with the extension cable to right underneath my pedals. I also tried with two different computers, both MacBooks. One Pro and one Air. No joy.
And same as what @Oldsport said, there is no log since Zwift cannot even see the pedals with ANT.
Hi all, it’s important we keep this topic alive and raise it’s profile.
I got some Vector 3 pedals a couple of weeks ago and Zwift won’t see them over ANT+. I’ve tried my macbook pro and Windows 10 PC and 2 different dongles - one from Garmin and one from my Elite trainer. I can connect my HR strap, and Elite Trainers via ANT+ successfully on either dongle and computer combination, and like the other poster the pedals are connected fine on Sufferfest and also Golden Cheetah via ANT+ so this is 100% a Zwift specific problem.
The pedals do connect over bluetooth to both computers but I have to have my phone switched off or the pedals drop the connection to the computer, which is a pain in Zwift…
I opened a support ticket with Zwift a week ago and haven’t had anything after the automated response.
Andy
It will take about two weeks to hear back.
Why does your phone make the trainer drop connection? Turning Bluetooth off on your phone should help, or forgetting the pedal in the system settings.
But yeah, I’d want ant+ any day over Bluetooth.
I concur, Andy.
After I posted I downloaded Sufferfest and discovered that Sufferfest has no problem recognizing my pedals as an ANT+ device. This points strongly to Zwift being the source of the problem.
I contacted Zwift about 4 weeks ago. After the initial rounds of making-sure-the-user-is-not-a-buffoon they asked for my log files about a week ago.
I encourage those who have the same problem to contact Zwift support too so they can get it sorted.
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Thanks @Tim_Lin , I am also at this point.
Support provided links to the pages we have already read, and just in case I have fixed and changed the channel on my router.
I’ll log a few more rides and reply to support with some log files, photo’s and even a video that shows all other ANT+ devices apart from the pedals.
I had hoped that the update the other day would have changed things.
@Ben_Brawn regarding Bluetooth - I have taken to switching off bluetooth on my phone so I can leave the Companion app on and this was ok, the bluetooth connection to my MacBook seemed more stable than my PC. Unfortunately I can’t connect my bluetooth headset at the same time for some reason so it’s not ideal but not as bad, so I’m still looking for an ANT+ Garmin Vector solution!
I had an update from Zwift support at the end of June that after other reports of the same issue it’s been raised for further review 
Let’s see what comes, but so far I’ve had a more stable bluetooth connection to my pedals with my MacBook, so long as I don’t have my phone Garmin Connect App trying to connect to them as well.
I didn’t get an update from Zwift support on their further review of the ANT+ with Garmin Vector 3 issue.
To compound things, Zwift now thinks my bluetooth is turned off in my macbook, so I can’t use my Vector 3 as a power meter at all!
bluetooth is most definitely not turned off by the way!
Same problem. No success to connect my Vector 3. I give up and sign up for sufferfest. There everything works great right from the beginning.
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Same problem. I canceled my subscription tonight.
I’m still having this issue Zwift Windows App won’t connect to Vector 3 Ant+ !!! - Now that Zwift has just started to drop my Bluetooth connections (related to Steering?) this issue is now URGENT again.
I have to suggest that 2.4GHz radio interference(which covers both ANT+ and Bluetooth) sounds worth looking into. For example, from a fan, a microwave, garage door opener, or something else nearby that could be generating RF interference.
Garmin sent me a replacement pair of pedals for a different issue, and Zwift had no problem recognizing that pair. 
Maybe you can see if Garmin is willing to do something about it?
Steve’s suggestion is not going to address the fundamental issue that Zwift and some Vector 3s do not play nice with each other, but it might help with your Bluetooth dropout issue.
Good luck!
Thanks Tim and Steve
I’ll try both - why not? If some pedals work then no way will Zwift fix this
Do you have a steering device paired? If so I would try without and see if anything is different.