BMW R1200RT/R1250RT Forum

Maybe the riding gear??
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I use MotoScan as well; unless something has changed it’s only an Android app at this time.

Some of us have bought cheap Android phones just to use that app; for many of us (and how we use it) it’s less money at the end of the day than a GS 911.

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R-master,  The ring wasn't faulty, it was just the wrong ring for the 2009 unit (on the 2005 wheel I swapped onto the '09) in that it had a diffferent number of "teeth" that the sensor was counting to calculate the speed.  Don't know what you would learn from messing wit...

Wow...your speedo quit working and the only thing wrong was a front sensor ring. Usually with a failed speedo it’s the rear sensor system... but this might be a “undocumented feature” in certain failure modes that not only lights up the ABS warning, but kills the speedo. I’m going to try a few exper...

Great!
So the speed ring made the warning lights go away...but is your speedometer still inoperative?


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I had a few minutes so I hooked up the GS-911 and my laptop to the RT. I navigated to the ABS module in the GS-911 software; from that menu I can get to real-time data for the front and rear wheel speeds. As opposed to some other models of BMW bikes it does not show “calculated speed” but that’s rea...

UPDATE: It appears (at least with some BMW bikes) the GS-911 can read speed from the sensor...and calculated speed from the page “Input Data”: https://uploads.tapatalk-cdn.com/20200126/8af3b87e8411490643b20655a9d984e4.jpg I’m curious about this, so as time permits over the next couple of days I’ll h...

After reading that the sensor rings had a different number of slots (teeth), I did some research...indeed the earlier RTs (up to Aug 2006) use a different one: https://uploads.tapatalk-cdn.com/20200126/b66132d3cb78dcf619db6e9ce1df8015.jpg I have both an early ‘06, and an ‘09 sitting here: 2006 RT: h...

On your RT the wheel sensors connect to a harness that directs the signals from the speed sensors to the ABS controller: https://uploads.tapatalk-cdn.com/20200126/fdd67ebc4ca431c96db261150489e42d.jpg In the diagram above the front and rear wheel speed sensors (B9193 and B9194 respectively) at the bo...

Excellent!
Please let us know what they find.

Ride safe!


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OK... My nephew just brought over his ‘05 RT to roost for the winter. He’d previously left it in storage for a few years in Arizona and shipped it up to the Pacific NW last year so I did a lot of service work on it to get it roadworthy. This included oil/filter change, spline lube, flushing the tan...

OK... My nephew just brought over his ‘05 RT to roost for the winter. He’d previously left it in storage for a few years in Arizona and shipped it up to the Pacific NW last year so I did a lot of service work on it to get it roadworthy. This included oil/filter change, spline lube, flushing the tank...

Another question comes to mind – you said the bike was recently “de-servoed”...Out of curiosity, did the person or shop doing the modification leave the ABS electronics module in the bike? It’s necessary to leave it in so your speedometer and odometer works, among other things. The assumption here f...

Wait..what?? Sent you a PM on this as well, but just to clarify did you remove the rear speed sensor and put it in place of your front speed sensor ? That’s what we’ve been suggesting, to see if your front sensor (which drives the speedometer and odometer) is faulty. To review: 1. Remove front wheel...

David. wrote: This quote was taken straight out of the Haynes Manual.

As both speed sensors are the same, would removing the suspect rear one and replacing it with the front one do the trick.

Yes...see my post above.


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