Question about Cycling

Open Question

Sigma 1609 sts speed and distance no longer work

Sigma 1609 sts I changed the battery in the front sensor after the indicator showed that the "distance" battery was low. Since I replaced the battery (I've tried two new ones) I can't get speed or distance to work. I tried pressing the button to "sync" but that hasn't worked either. I have successfully changed the battery for the cadence sensor in the past and it continues to function. Any ideas?

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 81 Answers

SOURCE: when I training indoor my edge 305 doesn't show me

Try start your training device outdoor for a check. If then it is working, the issue is about the device needs to see sattelites to perform measurements and register speed.

You may try switch GPS device off, which is said to be an indoor mode for training.

Menu>Settings>System>GPS Mode

Posted on Oct 11, 2010

  • 8546 Answers

SOURCE: Hi, My sigma bc 1009 sts

Well, it IS wireless. Perhaps the distance or line-of-sight isn't right. As a test, hold the receiver in your hand and hold it closer to the spinning wheel transmitter.

Posted on Mar 31, 2011

  • 8546 Answers

SOURCE: i bought a bike and


Find it here...

Posted on May 28, 2011

  • 8 Answers

SOURCE: Sigma wireless bicycle computer.

Did you throw the magnet on the crankarm? If not check the alignment of the transmitter and the magnet - sometimes they need to be quite close. Sometimes they just fail. I have seen instances where cadence worked and speed didn't and vice versa - so the unit is transmitting perfectly, but one of the sensors has gone bad.

Posted on Jun 24, 2011

  • 1 Answer

SOURCE: Sigma BC 1609 Cadence Bicycle Speedometer reads my movement much slower than I am actually going. E.g. moving about 15, reads as 5 mph.

I had the same problem. It is caused because the mount is facing the wrong direction and your computer is swapping speed and cadence. 5 mph would mean 63 RPM of the wheel which probably what your pedal is actually doing. The wheel is actually turning at about 3 times that rate so if you check your cadence it is probably maxing out at 180 even though that wouldn't be possible.

To fix this, just twist your mount 180 degrees on your handlebars or stem and try again. That way the computer is correctly lined up with the mount.

Posted on Sep 09, 2012

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How can I get my sigma 400 bike computer to display speed and distance?

Need to know if it worked before, and what you have tried so far - new battery, repositioning magnet, making sure unit is seated well in mounting? If you take a magnet and move it back and forth right next to the wheel sensor and get no response then either the signal is not getting to the computer or the computer is broken and needs to be replaced.

Aug 29, 2017 | Cycling

1 Answer

Not registering speed

Check your magnet is aligned with and adequately close to the sensor, and that the sensor is not too far from the computer. Also check batteries. Try taking the computer off the bars and moving it nearer to the sensor to see if it is a range problem.

Oct 14, 2013 | Sigma Sport BC 1009 STS Wireless Computer

1 Answer

Syncing with Sigma BC1009

Had this same problem and nothing worked after trying everything I could think of. Speedometer would never display a blinking 0 (just stagnant). Turned out the computer mount on the handle bar was turned around backwards. The sigma letters go towards the front of the bike. Placed the device in the mount, the 0 started blinking and sync'd up with sensor. Finally works!

Sep 13, 2012 | Sigma Sport BC 1009 STS Wireless Computer

1 Answer

How to open the sensor on rear wheel of Sigma BC1609 wireless odometer. I need to change the battery and there is no slot (to use a coin to open.) Instructions say "use a tool" what tool?

They're talking about a special tool with two little pins on it for turning the battery cover. It's the item on the far right of the 3rd page of the manual. I imagine a bent paper clip might also work in its place.

The manual is here 2009_BA_BC 1609 STS CAD_nat.pdf

Watch the video #5 here.

Jul 13, 2011 | Sigma Cycling

1 Answer

Hi, My sigma bc 1009 sts stop functioning during rides.The speed flashes as 0km\h.I changed the transmitter battery,then the display flashes"spd trans low".Then I changed battery and it's the...

Well, it IS wireless. Perhaps the distance or line-of-sight isn't right. As a test, hold the receiver in your hand and hold it closer to the spinning wheel transmitter.

Mar 31, 2011 | Sigma Sport BC 1009 STS Wireless Computer

Not finding what you are looking for?
Cycling Logo

Related Topics:

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cycling Experts

Michial Gueffroy

Level 3 Expert

1138 Answers


Level 3 Expert

102366 Answers

John Egan
John Egan

Level 2 Expert

73 Answers

Are you a Cycling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides