Garmin Vector 3s - wrong readings

Having problems with the readings. I set up the pedals on my bike, which is on the in-door turbo. I did the FTP test (on zwift) using the pedals and the result was 253. All is fine, and been training on the turbo and the pedals are cranking the correct data for the last month.

I take the pedals off one bike, and onto another for outdoor riding. Pair it with a wahoo, and i'm cruising along at an easy pace, doing 500 watts! I tried to calibrate the wahoo, but that failed. I gave up.

I thought it was just wahoo, and I put the pedals back on the in-door trainer, and now that is giving me wrong readings - too high (cruising along at 340 watts when I know my FTP is 253). Really not sure what to do now.

I've tried taking out battery and putting them back in - same thing.

At a loss as to what to do really. any help?

thanks

John

0 t_smit over 5 years ago

Use your wahoo head unit to do a zero offset calibration. This is required at least once after you install the pedals onto a different bike. For best results it is recommended that you re-do the calibration After you have done a couple of hard sprints on the pedals.

The pedals do have an automatic zero process but it will not make large changes as you may encounter after a re-installation.

0 2540930 over 4 years ago

HI all, I seem to have the same issue, cruising along and have 250Watt... I only have the vector 3 and the garmin app, no edge. Is there any way to calibrate / reset the pedals?

thanks

0 4221596 over 4 years ago

I have no head unit either. Is there any way to get the pedals to reset properly if all I've got is the Connect app?

My experience with these pedals has been horrible so far. Nothing but a pile of buggy garbage.

Jay

0 t_smit over 4 years ago in reply to 4221596

THe current version of GCM supports Vector calibration. Clicking the top field on the Device Settings screen will take you to the calibration menu.

0 2540930 over 4 years ago in reply to t_smit

I don’t have this button

0 t_smit over 4 years ago in reply to 2540930

what is the version of your GCM app? You should be at 4.28.x.x

0 2540930 over 4 years ago in reply to t_smit

I have 4.28.11

0 t_smit over 4 years ago in reply to 2540930

Sorry for the confusion. Currently this feature is available on Android devices but not (yet) iOS. We're checking into when this will be released for iOS.

0 4221596 over 4 years ago in reply to t_smit

Is there any way to force the pedals to reset? I tried taking the batteries out, but that didn't work. As of right now I'm getting readings of over 200 Watts when it should be reading 50. Would a static calibration fix this problem? I'm on iOS and don't seem to have the calibration button.

0 t_smit over 4 years ago in reply to 4221596

After installing the pedals it is necessary (not optional) to do a zero-offset calibration. You can do a zero calibration using any head unit that supports the respective ANT+ or BLE bike power profiles (i.e from Garmin or any of the other head unit manufacturers), or using a trainer app (such as TrainerRoad or others) that has implemented the power meter zero calibration function. Unfortunately I do not think that Zwift currently has this functionality.

As noted above, the zero calibration functionality is currently available on the Android version of Garmin Connect Mobile but not on the iOS version. We apologize for that inconvenience.

When the initial zero offset has been done, the offsets should be close enough that afterward, the auto-zero correction will track out subsequent changes. The auto-zero process is not equipped to handle large changes such as might occur upon a pedal re-installation.