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Forerunner 405CX not connecting to GSC

The battery is replaced
Settings checked
red green lights on gsc for cadence speed active

Not picking up or connecting to unit or GSC

PLease help :mad::mad::mad::mad:

0 DW152 over 14 years ago

Are you selecting pairing in the 405's menu?

Are you spinning the cranks and wheels when you are trying to pair?

Did you try the trick with reversing the polarity of the battery? Put the battery in the GSC-10 backwards and hold it there for 5-10 seconds. This resets the transmitter ID. Then put the battery back in properly and try to pair.

0 RUANRETIEF over 14 years ago

Yes pairing on on 405 unit
Yes spinning wheels and crank pairing but gsc unit if not picking up the unit flakes out on 30-45 sec

tried reverse of battery 5-10 sec no use

0 DW152 over 14 years ago

What do you mean "flakes out"?