Why will my Forerunner 410, 405CX, or 405 not acquire a satellite lock?

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In some cases, the Forerunner 405, 405CX, or 410 may not lock onto satellites. This can be due to corrupted satellite information. Performing an AutoLocate will clear previous GPS data and allow the device to lock onto its current position.

You may also need to perform an AutoLocate in the following circumstances:

  • The device has not been used in over two weeks
  • The device is powered on in a location that is 50 or more miles from where it is normally used
  • The distance or speed data appears to be inaccurate as a result of a corrupt satellite signal

To perform an AutoLocate on the Forerunner:

  1. Select GPS on bezel
  2. Select Satellites
  3. Press and hold Lap/Reset
  4. Wait to hear a reset tone
  5. Release Lap/Reset
  6. Take device outside for 10 to 20 minutes to acquire satellites

Once the bars on the Satellite page have disappeared, the AutoLocate is completed. The bars will reappear as the Forerunner locks onto its location.

If acquisition issue persists, it may be necessary to perform a reset.

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