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Active Member
Gear position sensor behind sprocket
So let's talk about the gear position sensor behind the front sprocket. Pretty sure it is called something like that. Is black in color circular has a electrical female plug on it.
Has any had this replaced? What causes this to fail? Heat? Dirt? Was this "Checked" because the Check transmission message was running across the screen.
Any information greatly appreciated
Even from Mike the Blueknight911
And I'm being sincere as I write this.
Patrick Sempert,
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Last edited by Sempyder; 03-04-2017 at 01:23 AM.
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Active Member
Gear position sensor behind sprocket
Last edited by Sempyder; 03-04-2017 at 01:58 AM.
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Very Active Member
My gear sensor has just started playing up. Reporting the wrong gear and then displaying an E instead with both the newtral and reverse light alternatively. This is after the Spyder was ridden hard including some dirt roads last weekend so I suspect vibration and dust are responsible. Hopefully get a chance to investigate tomorrow so I'll let you know what I find.
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Very Active Member
I have had mine replaced. When it went bad it would show and E in gear display. Twice during this time the bike went into limp mode. This happened 680 miles from home. I rode it for 4 days like that. When we got back from our trip the dealer got me in right away. Good luck.
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Active Member
Gear Position Sensor
Had the same problem with my 2012 RT-S SE5. I was 500 hundred miles from home at the time and the dealer I stopped at diagnosed it as a problem with the ECU and he tried to reflash it. This caused the ECU to freeze and that could only be fixed by replacing the ECU. BRP did a great job of overnighting a new ECU to the dealer and the bike was supposedly repaired the next morning. Less than 100 miles further the problem came back. When I finally got back home I took it to my local dealer and he replaced the gear position sensor. No problems since, and that was 2 years ago. I never went into limp mode and really saw no difference in how the bike ran.
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Very Active Member
Bummer...
They apparently do go bad but have never seen an explanation as to why. In most all cases it is not the transmission or it's parts but the sensor that goes bad. If you reboot the computers the limp mode goes away but the gear indicator will continue to flash E and or R but not indicate the gear. Guess they are no longer simple contacts that could be cleaned sanded re installed....
Gene and Ilana De Laney
Mt. Helix, California
2012 RS sm5
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black
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Very Active Member
Not from personal experience but from reading what others have posted.
The GBPS can come loose and the cap screws need to be tightened up.
Dirt and or water has gotten into it and cleaning fixed it. I have only read from one poster that cleaning fixed it. Most just replace.
When replacing with a new one. It needs to be calibrated. It is not clear if removing and reinstalling the same GBPS would require recalibration.
2018 F3 LIMITED
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Very Active Member
Originally Posted by PistonBlown
My gear sensor has just started playing up. Reporting the wrong gear and then displaying an E instead with both the newtral and reverse light alternatively. This is after the Spyder was ridden hard including some dirt roads last weekend so I suspect vibration and dust are responsible. Hopefully get a chance to investigate tomorrow so I'll let you know what I find.
+1 what he said . Mine on da RS-S did it early on. Crappy switch.
If I can't fix it, I will fix it so no one can fix it. Sypder Loco!
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Active Member
Thanks everyone, do you think if when washing the bike it would extend the life of the switch doing a extra clean on it? Dielectric grease reapplication couldn't do any harm? Seems like close to my oil change my shifting has problems to R then check transmission comes and goes.
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my rs did the same for a while then it fixed itself that was about 5000k ago
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Mod Maniac
Info from a old time member...
... If you do a search on my posts, you'll find a thread about this very issue in 2008. Some info for you:
1. The reported problem at the time was one or more poorly-soldered connections on an internal GPS circuit board;
2. The GPS is a mostly sealed unit. I really don't see how dirt, or cleaning, can affect it unless it is defective in the first place with an opening of some sort. There is a flat-sided shaft from the transmission that is centered in a bushing with a seals in the GPS. I would guess that the GPS' o-ring seals could eventually leak but that was never reported.
Here's that thread.
Last edited by ataDude; 03-24-2017 at 04:06 PM.
ata = allergic to asphalt
My mods: https://www.spyderlovers.com/forums/...ead.php?t=5753
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There are two kinds of people: (1) those who can read, reason and apply the experiences of others; and (2) those who just have to pee on the electric fence. ataDude, 2009
My Spyder:
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Active Member
i had to have mine replaced last year, went in to limp mode and flasehed thru all gears and reverse on dash, dealer replaced under extended warranty so i do not know how much or what caused it
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Active Member
Originally Posted by ataDude
... If you do a search on my posts, you'll find a thread about this very issue in 2008. Some info for you:
1. The reported problem at the time was one or more poorly-soldered connections on an internal GPS circuit board;
2. The GPS is a mostly sealed unit. I really don't see how dirt, or cleaning, can affect it unless it is defective in the first place with an opening of some sort. There is a flat-sided shaft from the transmission that is centered in a bushing with a seals in the GPS. I would guess that the GPS' o-ring seals could eventually leak but that was never reported.
Here's that thread.
Thanks for the follow up on that thread from 2009, big help for sure. I had a conversation with a platinum BRP tech on this issue and he mentioned everything you hit in your thread. He also noted that you can get to the GPS without removing the sprocket but much easier and faster to remove the sprocket. The Budds reset must just be a double check to make sure the GPS is correctly set for zero but if you have it in neutral and disconnect ground you should be good. Once again thanks for the post.
Sempert out,
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Originally Posted by Sempyder
Thanks for the follow up on that thread from 2009, big help for sure. I had a conversation with a platinum BRP tech on this issue and he mentioned everything you hit in your thread. He also noted that you can get to the GPS without removing the sprocket but much easier and faster to remove the sprocket. The Budds reset must just be a double check to make sure the GPS is correctly set for zero but if you have it in neutral and disconnect ground you should be good. Once again thanks for the post.
Sempert out,
Sent from my iPhone using Tapatalk
Did you replace yours yourself without resetting it in the computer? Mine is acting up and I want to know if I can replace it without needing to go to the dealer. I've taken the front sprocket off before, so I'm not worried about dealing with that.
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Very Active Member
I replaced mine quite some time back without any dealer/Buds input. It's been perfect ever since.
The best substitute for brains & knowledge is....................silence.
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