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Old 03-08-2013, 05:57 PM   #1
wegimex OP
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Joined: Oct 2009
Location: Mexico City
Oddometer: 50
Bluhduh 650 does not display the gear anymorewhen idling

Happened all of a sudden to my wife´s 2008 F650GS. While moving everything is fine. As soon as I stop display goes blank (only the part that displays current gear). Engine stops when side-stand is used even in neutral. Anybody had that before ?
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wegimex screwed with this post 03-08-2013 at 07:41 PM
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Old 03-09-2013, 04:59 AM   #2
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Joined: Jul 2008
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By chance has she ridden in deep water, let the bike take a "wet nap", or pressure washed it?

There is a sensor on the end of the selector shaft that sends a voltage to the computer that ends up getting converted to the gear position....

PN: 23 00 7 711 960 POTENTIOMETER WITH WIRE - L=300MM (from 03/08)
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That thing sometimes gets water in it and gets screwed up...
You might be able to take it off and dry it out some how...

Or it may be working but need to "re-learn" its positions ... either the dealer computer or the GS-911 can reset it so it can re-learn things....

Has bike had dead battery? That would make the computer forget details...

I didn't think the potentiometer was how the bike determined it was in Neutral for purposes of shutting down the engine ... I though there was a separate switch for that ... but maybe not...

If not that would explain bike shutting off when you put kickstand down- since the bike doesn't KNOW what gear it's in the computer would go to fail-safe mode and say:

"screw you - I don't know if we are in neutral or not ... better safe than sorry ... I'm turning off the engine"
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Old 03-09-2013, 09:59 AM   #3
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What he said. In order for the computer to re-learn the gears, you must be in each gear for at least 5 secs. Even better if its all at the same time, sequentially speaking. I chose to do that on a ride since I don't like doing 60 MPH on the c stand in the shop in front of the glass window.

On some models the gear selector would melt when in too hot conditions even if the coolant temp light stays off. Again, do a physical on it. Otherwise, you're too light toed. Sometimes if you're not assertive enough on the lever you'll get a midway reading from the sensor and the computer goes WTF?
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