Garmin is aware of an issue that may affect a small number of Vector 3 customers where the spindle nut is under torqued and must be tightened before your next ride.
NOTE: Garmin recommends tightening the spindle nut on one pedal at a time taking care to keep track of small parts. You must obtain a 4 mm hex key, PH 00 screwdriver, 15 mm pedal wrench, and thin wall 12 mm socket wrench with an outer diameter that is less than 17 mm, which is typically a ¼ in. drive socket. Use care not to damage any of the Vector components.
Use a 15 mm pedal wrench to remove the pedals.
Use a 4 mm hex key to remove the battery cover (1).
Set the battery cover and batteries (2) aside.
Use a small Phillips screwdriver (PH 00) to remove the two screws (3) that secure the battery carriage (4).
Remove the battery carriage.
While securely holding the wrench flats with a pedal wrench, use the 12 mm thin walled socket wrench to torque the spindle nut (5) to 7 lbf-ft. (10 N-m).
NOTE: To ensure that the spindle nut stays in place, you must tighten it to the recommended torque specification.
NOTE: The right pedal has a black spindle nut and a reverse thread. The left pedal has a silver spindle nut. The left spindle has a line on the wrench flats.
Replace the battery carriage and two screws.
Replace the batteries and battery cover, and hand tighten it.