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I changed the battery in my Sigma BC 500 and it only displays flashing SET MPH. How do I stop this?

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    My guess is it's going through the setup process, and is asking you to choose between mile/hour (MPH) and kilometers/hour (KMH). – Argenti Apparatus May 14 at 19:39
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Changing the battery has very likely reset the memory of the bike computer, so it needs to know what units you want to use, and what tyre size you have on the bike etc. You can even tell it what your old mileage total was so it starts counting from where you left off. I guess that’s how the world managed before Strava ;)

If you still have the manual you should refer to the setup process in it.

If you don’t have the manual, there are copies online you should be able to search for, as well as videos showing how it can be done. Whilst the video I watched was informative and matched the manual for a bc500, it sounds a bit different to what you are seeing, but the process will be very similar.

This video might be helpful:

  • Be aware that on older computer of the time, keys may become sticky (Think drops from bidons!) and not respond very well to pressure and may become hard to set values. – Carel May 15 at 19:51

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