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post #1 of 2 Old Sep 2nd, 2013, 12:28 pm Thread Starter
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Location: Pittsburgh, PA, USA
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Confirming ABS Error Codes

After reading every post on this and other BMW sites about ABS issues, I'm pretty sure I know the answer, but I'm just not willing to accept it yet....Poor yourself a drink, this may be lengthy....

The Symptoms: When I bought this '02 LT in March the warning lights blinked alternately and slowly but the power assist brakes worked great. (I thought low reservoir or battery). I took the bike to a dealership for a complete maintenance overhaul including new brake pads and bleeding the system. When I picked up the bike the lights still slow blinked and I was told the battery was the problem. (The battery was new at purchase) So I took the bike home and put the battery on a charger and checked the volts, 12.85v. Lights still blinked slow but brakes were fine. A couple of weeks ago things changed. Blinking went to fast and after 4 or 5 uses of the brakes on a ride, lost power assist and only had residual braking. This pattern continues, Start the bike, fast flashing lights, 4 or 5 uses of brakes then drop to residual.

What I have done: Found a friendly BMW owner with a GS911 and tried to pull none. I bought and installed a new battery (Odyssey PC680). No change. I found another friendly GS-911 and tried again. This time we got codes. 17419 "Rear ABS Motor Defective" not present, 17910 "Brake Fluid Level Low" present, 17163 "Front ABS Motor Defective" present. I have checked the resevoirs (handlebar and under passenger seat) they are very full. I contacted Module Masters and got a return email stating they cant rebuild my ABS Modulator/Motors.

Am I as screwed as I think I am or is there something I can test or do? (yes I read the post about holding a vibrator against the ABS unit to shake the dirt out of the brushes)

I am seriously thinking about adjusting my levers, putting black electrical tape over the lights and just riding until winter then do the ABS-ectomy that I saw on you-tube.

I forgot to mention....with the key on, when I press the brake pedal the servos kick on but do not stop when I release the pedal. I have to turn the key off to get the brake servos to stop running. Front brake lever does not do this, it stops when I release the lever.

Chuck H
2002 K1200LT "Queen Mary"

Last edited by Str8wsky; Sep 2nd, 2013 at 4:02 pm. Reason: more info
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post #2 of 2 Old Sep 2nd, 2013, 6:02 pm Thread Starter
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Location: Pittsburgh, PA, USA
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Re: Confirming ABS Error Codes

Just did an ABS bleed all around and now the front brake lever no longer activates the servos. Rear pedal still activates, and continues to run until key turned off.

Chuck H
2002 K1200LT "Queen Mary"
Str8wsky is offline  

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