k1200lt abs flashing - BMW Luxury Touring Community
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post #1 of 20 Old Feb 1st, 2020, 12:12 pm Thread Starter
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k1200lt abs flashing

hello I am new today I have just bought my first bmw bike it is a 2001

k1200lt and the abs light are flashing back and forth

fluid levels seem ok will not reset with the pin 21 to earth

also done multi meter test on brown and blue wire just sits at 10 volts
no drops in voltage

how does the abs no if the fluid is low

what else can I check

thanks to all
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post #2 of 20 Old Feb 1st, 2020, 1:17 pm
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Re: k1200lt abs flashing

The bike has to roll to check the wheel sensors before they will go off. How is the battery? The abs needs a fully charged battery. Many posts on this question, use the search or technical section.

_____________

Kim Thomson
Motorcycle Cigar Smoker
05 K1200LT - The Golden Rocket Ship
91 K100RS - The White Stallion
85 K100 Standard - Big Red
79 R65 - "The Bee" is a buzzin' again!
06 525i - Premium, Sport, Comfort, Xenons

Gone, but not forgotten...
02 K1200LTC - Big Blue (accident at 40k)
88 K100RT - Chocolate (it was brown, melted - fire)
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post #3 of 20 Old Feb 1st, 2020, 2:36 pm
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Re: k1200lt abs flashing

The 2001 LT's with the Brembo front caliper do not monitor the brake fluid level.

Dave Selvig
2004 Black LT
2000 Canon Red LT



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post #4 of 20 Old Feb 1st, 2020, 4:34 pm Thread Starter
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Re: k1200lt abs flashing

lights still flashing when riding the bike
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post #5 of 20 Old Feb 1st, 2020, 4:51 pm
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Re: k1200lt abs flashing

The pattern and speed will tell you the fault. There is a chart out there that tells what they mean.

_____________

Kim Thomson
Motorcycle Cigar Smoker
05 K1200LT - The Golden Rocket Ship
91 K100RS - The White Stallion
85 K100 Standard - Big Red
79 R65 - "The Bee" is a buzzin' again!
06 525i - Premium, Sport, Comfort, Xenons

Gone, but not forgotten...
02 K1200LTC - Big Blue (accident at 40k)
88 K100RT - Chocolate (it was brown, melted - fire)
85 K100RT - (wore out)
82 Yamaha Vision - (electrics)
72 Yamaha R5C 350 - (broke trans)
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post #6 of 20 Old Feb 1st, 2020, 6:53 pm
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Re: k1200lt abs flashing

They should be both flashing together at key on for normal operation and then go off after you start moving a few meters. If they are not both flashing together at key on, then there is a fault that needs to be cleared. If the pin 21 method did not reset it, what light or lights are flashing and how fast? As Saddleman said, the ABS-II with Brembo calipers has no fluid level sensors but if you are not in the USA, then an 01 might have the integral ABS system with BMW on the front calipers so please check and let us know. You may need access to a GS911 to read the code so can you fill in a little more of your profile so we know where you are and if there is anyone close that might be able to help out?
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Gordon
Sugar Hill, GA
2001 K1200LTI Champagne (current ride) Lazy Susan
1998 R1100RT Never should have sold it
1974 Yamaha TX 750 Twin. Omni Phase Balanced


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Last edited by bmwcoolk1200; Feb 1st, 2020 at 7:01 pm.
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post #7 of 20 Old Feb 2nd, 2020, 9:08 am Thread Starter
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Re: k1200lt abs flashing

thanks for all your reply's

when I turn the ignition on the lights flash one on one off back and fourth one second intervals stays the same all the time when riding fluid levels all ok pads all ok no leaks
I believe this abs system is none servo

been told off the dealer from frame number the bike was built in 1999 but registered in
2001 this my help

thankyou for your reply's
Dave
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post #8 of 20 Old Feb 2nd, 2020, 1:43 pm
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You have the ABSII (ABS2) system. Mine failed the same way. We call that flashing sequence "Wig Wag" fault lights. I had to pull my pump out and send it to Module Masters in Idaho. $350 rebuild with a 5 year warranty. Before I did that, I put some tape over the fault lights and rode it for 2 years. ABSII faults don't stop the brakes from stopping the bike. They work just like normal only NO ABS function.

Bad part is.. basically BMW took an abs pump and module and built a bike around it. There are YouTube videos on disassembly and removal for rebuild. Good winter project. Good luck.

2000 BMW K1200LT
2005 BMW R1200GS
2001 Kaw KX250
1974 Kaw KX250
1981 Yam YZ465


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post #9 of 20 Old Feb 2nd, 2020, 2:16 pm Thread Starter
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Re: k1200lt abs flashing

thankyou
will start stripping it down and send it off
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post #10 of 20 Old Feb 2nd, 2020, 4:25 pm
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Re: k1200lt abs flashing

Confirm you don't just have low battery voltage before you take it apart. I believe that gives same warning flashing.
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post #11 of 20 Old Feb 13th, 2020, 4:09 pm Thread Starter
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Re: k1200lt abs flashing

hi all just a update

rest abs unit using pin 21 this as turned the left light off but the right is still flashing at 1 hz

I cannot find anybody in the uk to repair this unit just any body no of any strip down videos or what normally

go's in the units

thanks dave
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post #12 of 20 Old Feb 13th, 2020, 5:34 pm
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Re: k1200lt abs flashing

Have you checked to make sure you don't have a problem with one of your wheel sensors. Are they both adjusted correctly.
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post #13 of 20 Old Feb 14th, 2020, 3:50 pm Thread Starter
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Re: k1200lt abs flashing

hi all
just had multi meter on the battery

ignition off 12.6 volts

ignition on 11.6 volts

engine running 14 volts
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post #14 of 20 Old Feb 14th, 2020, 4:59 pm
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Re: k1200lt abs flashing

Quote:
Originally Posted by kerrigan View Post
hi all
just had multi meter on the battery

ignition off 12.6 volts

ignition on 11.6 volts

engine running 14 volts
I don't think you have confirmed what brake calipers you have yet. BMW or Brembo. In the UK, your 01 may have the I-ABS system. Brembo is ABS-II and BMW is I-ABS. please confirm.

Gordon
Sugar Hill, GA
2001 K1200LTI Champagne (current ride) Lazy Susan
1998 R1100RT Never should have sold it
1974 Yamaha TX 750 Twin. Omni Phase Balanced


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post #15 of 20 Old Feb 14th, 2020, 7:06 pm Thread Starter
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Re: k1200lt abs flashing

Brembo year 1999
sorry
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post #16 of 20 Old Feb 15th, 2020, 10:46 am
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Re: k1200lt abs flashing

Quote:
Originally Posted by kerrigan View Post
hi all
just had multi meter on the battery

ignition off 12.6 volts

ignition on 11.6 volts

engine running 14 volts
OK your battery is the issue. Normal full charge open circuit voltage (key off) should be 12.74 for a full charged and healthy battery. The Key on voltage should be no lower than 12.5 with a drop to 11.5 during cranking. I say a weak battery is your issue. Recommend replacement and then perform the reset function again after you have had a few run cycles under your belt.

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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post #17 of 20 Old Feb 15th, 2020, 2:05 pm Thread Starter
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Re: k1200lt abs flashing

thanks will look at get a new battery what make would you recommend
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post #18 of 20 Old Feb 15th, 2020, 7:20 pm
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Re: k1200lt abs flashing

I run the PC-680 (about 100 on Amazon) on both my LT and my 09 GT. It is a good quality AGM type battery. I get about 6 years out of each one. Not sure if they are available over on your side of the pond.

Looks like it is available there after all .

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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post #19 of 20 Old Yesterday, 11:30 pm
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Re: k1200lt abs flashing

Quote:
Originally Posted by kerrigan View Post
thanks will look at get a new battery what make would you recommend

Odyssey. Period.

Mark(Big Poppa) and Julie(Fireball)
'06 K1200LT Magnesium Black "Stella"
Glendale, AZ
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post #20 of 20 Unread Today, 10:49 pm
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Re: k1200lt abs flashing

Before I took everything apart, I would completely flush the system using the procedure in the book. IT must be done in a systematic method.

Check this guys video:


Don Wreyford
BMWMOA, 91738
RA 27032
ABC 7915
00 LT, 84 RS, 98 GS, 76R75/6
"An Elephant is eaten one bite at a time"
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