intermitent problem with ABS lights blinking - BMW Luxury Touring Community
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post #1 of 5 Old Jul 9th, 2015, 1:38 pm Thread Starter
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intermitent problem with ABS lights blinking

OK, have a 2001 K1200 LT that has the ABS II breaking system. I seem to get the 2 ABS lights blinking on occasion but only when I am cursing on the highway at 75 to 80 mph. These seems to be no degradation on break function and the fault disappears once the ignition is turned off and restarted. Battery is at full charge and the rear master cylinder is full. Checked with GS/911 and see rear wheel speed censor fault has occurred but is no longer present. Any thoughts or ideas of where this may be coming from?
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post #2 of 5 Old Jul 9th, 2015, 2:02 pm
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Re: intermitent problem with ABS lights blinking

I will let the guru's respond with more solid tech info but if you have an intermittent rear speed sensor fault, I would start there. Remove it, clean it and if there is an adjustment procedure for clearance, I would do that and see if it continues. I also have a 2001 ( Brembo calipers) and the brake system does not use the servo brake assist but a modulator so if that system fails, you still have fill brake function, just no anti lock. Since you actually have a code, I would start there and see if you have a bad connection at the connector for that sensor or a lot of gunk built up on it. If you clear the code, does it come back on the next check after the fault occurs even if it isn't currently present when you check?

Gordon
Sugar Hill, GA
2001 K1200LTI Champagne (current ride) Lazy Susan
1998 R1100RT Never should have sold it
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post #3 of 5 Old Jul 9th, 2015, 7:45 pm
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Re: intermitent problem with ABS lights blinking

It is unusual that the fault self clears as that is not normal operation for the system. I would suspect a pinched wire in the rear sensor line some where. Look for a tight cable tie and strip back the insulation to check for a cracked wire at that location.

John
2009 K1300GT Red Rocket
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2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
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But lack DE, MA, RI and CT with the 2005 LT

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post #4 of 5 Old Jul 14th, 2015, 1:50 pm Thread Starter
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Re: intermitent problem with ABS lights blinking

well looks like the problem is solved .... seems that the air gap on the sensor was a bit too large .... made the adjustment and have not seen the problem again .... yet.
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post #5 of 5 Old Jul 15th, 2015, 9:41 pm
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Re: intermitent problem with ABS lights blinking

Thanks for the follow up report.
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John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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