ABS Failure? - BMW Luxury Touring Community
 1Likes
  • 1 Post By sailor
 
LinkBack Thread Tools Display Modes
post #1 of 26 Old Jul 9th, 2017, 12:25 am Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
ABS Failure?

Riding the LT Saturday. Going down the road . A stupid guy slams his brakes no turn signal and proceeds to make a turn slower than paint drying. I haul the LT down and proceed after numbnuts makes his 3 day turn. Farther down the road. The dreaded triangle is lit solid. And the ABS light flashing at 1 HZ. Pull over. Shut it off. Restart. Servo whines for the typical startup as always. Triangle goes out. ABS flashes as always. Start off. Goes out as normal. Roll 20 seconds down the road. Triangle comes up again solid lit. ABS flashes again 1HZ. Servo whines when brakes are applied. Off when their not. I have brakes pretty decent. Can this be reset?

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
Sponsored Links
Advertisement
 
post #2 of 26 Old Jul 9th, 2017, 2:22 am
Senior Member
 
bmwcoolk1200's Avatar
 
Join Date: Feb 2015
Posts: 3,907
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
Riding the LT Saturday. Going down the road . A stupid guy slams his brakes no turn signal and proceeds to make a turn slower than paint drying. I haul the LT down and proceed after numbnuts makes his 3 day turn. Farther down the road. The dreaded triangle is lit solid. And the ABS light flashing at 1 HZ. Pull over. Shut it off. Restart. Servo whines for the typical startup as always. Triangle goes out. ABS flashes as always. Start off. Goes out as normal. Roll 20 seconds down the road. Triangle comes up again solid lit. ABS flashes again 1HZ. Servo whines when brakes are applied. Off when their not. I have brakes pretty decent. Can this be reset?
Triangle on and ABS flashing 1Hz is " At least one brake circuit is without ABS." I think you are going to need a GS911 to see what is going on. If one of the reservoirs was just low, they would be wig wagging.

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


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bmwcoolk1200 is offline  
post #3 of 26 Old Jul 9th, 2017, 7:26 am
Senior Member
 
sailor's Avatar
 
Join Date: Nov 2004
Location: Montreal ,QC , Canada
Posts: 1,148
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
Riding the LT Saturday. Going down the road . A stupid guy slams his brakes no turn signal and proceeds to make a turn slower than paint drying. I haul the LT down and proceed after numbnuts makes his 3 day turn. Farther down the road. The dreaded triangle is lit solid. And the ABS light flashing at 1 HZ. Pull over. Shut it off. Restart. Servo whines for the typical startup as always. Triangle goes out. ABS flashes as always. Start off. Goes out as normal. Roll 20 seconds down the road. Triangle comes up again solid lit. ABS flashes again 1HZ. Servo whines when brakes are applied. Off when their not. I have brakes pretty decent. Can this be reset?
NOTE that my message below is ONLY for IABS (with servos) as sold in USA 2002-2009 -OR- 2001-2009 for other countries:

Although the Owner's Manual supplied ABS warnings table only says: "At least 1 brake circuit without ABS" for your 2 warning sequence, accumulated experience from this forums and various other testing has shown that it is related to a defect of either "Wheel ABS speed sensor".

There is no need for reset in these IABS system as the system will reset itself on each ignition ON during internal self-check.
Once the fault is corrected, the error will not appear anymore.

List below will cover 90% cases for your type of warning: you have to check all items below for both wheel sensors:
General Warn ON (triangle) with ABS Warn flashing SLOW at 1 HZ, can be caused by:
1) incorrect ABS sensor gap (check CLYMER shop manual for data),

2) defective ABS sensor on a given wheel (check damaged wires or bad connection)

3) dirt in ABS sensor dented wheel OR damage dented sensor wheel

OF COURSE, a GS911 readout of faults would help confirm cause if available.
bmwcoolk1200 likes this.

-------------------------------------------------
John (Montreal, CANADA)
K1200RS (2002 IceBlue/Red - 95,000 miles)
-------------------------------------------------
Think twice before you hit [SUBMIT REPLY] - famous quote by another member:
"The value of this board is not founded on dismissing the ideas of others, but by posting to share our experiences and what we've learned from them."
sailor is offline  
 
post #4 of 26 Old Jul 9th, 2017, 9:18 am Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by bmwcoolk1200 View Post
Triangle on and ABS flashing 1Hz is " At least one brake circuit is without ABS." I think you are going to need a GS911 to see what is going on. If one of the reservoirs was just low, they would be wig wagging.
EXACTLY.. I've had the wig wag sequence. As always low fluid. I did a quick check last night when I came home late. No burnt bulbs. Wheel sensors looked ok. No leaking fluids. I rode the bike last week and it was fine. I threw the trickle charge on it last night. It was a little low. I have stuff to do today. I will delve into it later.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #5 of 26 Old Jul 9th, 2017, 9:21 am Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

The bad wheel sensor would be a blessing. I just hope it's not the unit.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #6 of 26 Old Jul 9th, 2017, 11:35 am
Senior Member
 
sailor's Avatar
 
Join Date: Nov 2004
Location: Montreal ,QC , Canada
Posts: 1,148
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
The bad wheel sensor would be a blessing. I just hope it's not the unit.
Anecdotal data accumulated here and on the other K1200RS forums (for 12 years at least) shows very few failure of these ABS sensor.
HOWEVER, we have seen many ABS sensor related failure / faults due to damaged wiring between sensor attachment point (at wheel) and the wiring connector (a few feet higher). HENCE, this were I would begin troubleshooting (based on warning light sequence of course).

1) In case of rear wheel sensor, fault was often caused by too tight tie-wrap or bad wiring routing (about 6 to 12 inch away from wheel sensor). In MOST cases damage was not visible from outside - you had to open the outside black wiring protector to see wire damage.

2) In case of front sensor, it was often related to recent wheel removal (tire change). Sensor gap had been changed -OR- wiring was damaged by incorrect installation of wheel -OR- fork tubes (if removed for maintenance).

P.S.: Of course, in case of faults, one should always check fluid level in 2 sections DOT4 reservoir on right side (2002-2004) -OR- 2 small reservoir on top of ABS modulator (2005-2009). BUT, in general, the warning light sequence you have seen is NOT related to low fluid level in these reservoirs. If fluid was low in these reservoirs, both warnings would be flashing (not solid ON for either).

-------------------------------------------------
John (Montreal, CANADA)
K1200RS (2002 IceBlue/Red - 95,000 miles)
-------------------------------------------------
Think twice before you hit [SUBMIT REPLY] - famous quote by another member:
"The value of this board is not founded on dismissing the ideas of others, but by posting to share our experiences and what we've learned from them."
sailor is offline  
post #7 of 26 Old Jul 9th, 2017, 1:14 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by sailor View Post
Anecdotal data accumulated here and on the other K1200RS forums (for 12 years at least) shows very few failure of these ABS sensor.
HOWEVER, we have seen many ABS sensor related failure / faults due to damaged wiring between sensor attachment point (at wheel) and the wiring connector (a few feet higher). HENCE, this were I would begin troubleshooting (based on warning light sequence of course).

1) In case of rear wheel sensor, fault was often caused by too tight tie-wrap or bad wiring routing (about 6 to 12 inch away from wheel sensor). In MOST cases damage was not visible from outside - you had to open the outside black wiring protector to see wire damage.

2) In case of front sensor, it was often related to recent wheel removal (tire change). Sensor gap had been changed -OR- wiring was damaged by incorrect installation of wheel -OR- fork tubes (if removed for maintenance).

P.S.: Of course, in case of faults, one should always check fluid level in 2 sections DOT4 reservoir on right side (2002-2004) -OR- 2 small reservoir on top of ABS modulator (2005-2009). BUT, in general, the warning light sequence you have seen is NOT related to low fluid level in these reservoirs. If fluid was low in these reservoirs, both warnings would be flashing (not solid ON for either).
Well. Tire change was some time ago. And have ridden many times since And did swap a rear rim after initial swap for a bent rim. I will start looking over things. Hopefully it's that simple.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #8 of 26 Old Jul 9th, 2017, 1:19 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Thanks. As I said. The almost certainty it being a sensor would be a good thing. As it is pretty simple and not the dreaded ABS pump Failure. But do have brakes. So. I think you guys are right on.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #9 of 26 Old Jul 10th, 2017, 1:58 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Angry Re: ABS Failure?

Quote:
Originally Posted by sailor View Post
NOTE that my message below is ONLY for IABS (with servos) as sold in USA 2002-2009 -OR- 2001-2009 for other countries:

Although the Owner's Manual supplied ABS warnings table only says: "At least 1 brake circuit without ABS" for your 2 warning sequence, accumulated experience from this forums and various other testing has shown that it is related to a defect of either "Wheel ABS speed sensor".

There is no need for reset in these IABS system as the system will reset itself on each ignition ON during internal self-check.
Once the fault is corrected, the error will not appear anymore.

List below will cover 90% cases for your type of warning: you have to check all items below for both wheel sensors:
General Warn ON (triangle) with ABS Warn flashing SLOW at 1 HZ, can be caused by:
1) incorrect ABS sensor gap (check CLYMER shop manual for data),

2) defective ABS sensor on a given wheel (check damaged wires or bad connection)

3) dirt in ABS sensor dented wheel OR damage dented sensor wheel

OF COURSE, a GS911 readout of faults would help confirm cause if available.
Well. Went out to garage today. Inspected wheel sensors for damage, debris. Inspected both ABS rings. Found nothing. Started it up. Went thru it's self checks .Went down the driveway. Lights came up immediately. And i was wrong. It's a solid lit triangle. And 4HZ, Fast flashing Brake failure light. Which according to code chart is... At least one wheel has only residual braking. This is not good.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #10 of 26 Old Jul 10th, 2017, 7:04 pm
Senior Member
 
sailor's Avatar
 
Join Date: Nov 2004
Location: Montreal ,QC , Canada
Posts: 1,148
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
Well. Went out to garage today. Inspected wheel sensors for damage, debris. Inspected both ABS rings. Found nothing. Started it up. Went thru it's self checks .Went down the driveway. Lights came up immediately. And i was wrong. It's a solid lit triangle. And 4HZ, Fast flashing Brake failure light. Which according to code chart is... At least one wheel has only residual braking. This is not good.
So... did I got sidetracked by an incorrect read or by incorrect data. A fast flash has a very different meaning... thus you would not have an ABS wheel sensor issue.

Unfortunately , this fast-flash+Solid Triangle sequence of ABS warnings is NOT good news at all (compare the earlier given sequence of Slow flash at 1Hz).

This type of problem is often intermittent when it starts and will disable brake servos assist - thus rendering the brake system almost unusable (unless you loose servo assist on REAR only... hopefully).

The solid General warning light with the 4 hz flashing ABS light is an indicator that the ABS unit did not see the correct output pressure compared to the input pressure on the control circuit. This means it has disabled the pump assist on one -OR- both of the wheel circuits.

In most cases, you would need a new ABS unit -OR- an overhaul of your unit For the moment we know ONLY one shop in Germany that can overhaul these units as BMW does NOT sell any internal parts:
https://rhelectronics.de/de/neu-und-...-tauschgeraet/

Before going to the expensive solution above, YOU SHOULD HAVE a FULL SYSTEM BLEED done on all 4 circuits as documented in BMW Service manual (not CLYMER). There is also a YouTube video from the Illinois BMW club on this fairly long procedure:

-------------------------------------------------
John (Montreal, CANADA)
K1200RS (2002 IceBlue/Red - 95,000 miles)
-------------------------------------------------
Think twice before you hit [SUBMIT REPLY] - famous quote by another member:
"The value of this board is not founded on dismissing the ideas of others, but by posting to share our experiences and what we've learned from them."

Last edited by sailor; Jul 10th, 2017 at 7:31 pm.
sailor is offline  
post #11 of 26 Old Jul 10th, 2017, 7:50 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by sailor View Post
So... did I got sidetracked by an incorrect read or by incorrect data. A fast flash has a very different meaning... thus you would not have an ABS wheel sensor issue.

Unfortunately , this fast-flash+Solid Triangle sequence of ABS warnings is NOT good news at all (compare the earlier given sequence of Slow flash at 1Hz).

This type of problem is often intermittent when it starts and will disable brake servos assist - thus rendering the brake system almost unusable (unless you loose servo assist on REAR only... hopefully).

The solid General warning light with the 4 hz flashing ABS light is an indicator that the ABS unit did not see the correct output pressure compared to the input pressure on the control circuit. This means it has disabled the pump assist on one -OR- both of the wheel circuits.

In most cases, you would need a new ABS unit -OR- an overhaul of your unit For the moment we know ONLY one shop in Germany that can overhaul these units as BMW does NOT sell any internal parts:
https://rhelectronics.de/de/neu-und-...-tauschgeraet/

Before going to the expensive solution above, YOU SHOULD HAVE a FULL SYSTEM BLEED done on all 4 circuits as documented in BMW Service manual (not CLYMER). There is also a YouTube video from the Illinois BMW club on this fairly long procedure:
https://www.youtube.com/watch?v=lGwXIrc3kRU&t=8s
No. You didn't get sidetracked or a different meaning. I told you it was a slow 1 HZ flash. I was on my way to the Doctor on Saturday when this popped up. I rushed home quickly parked the bike, and jumped in the car to make my Appt. And thought that's what I remembered. So I was wrong. Is that video from Kirk Johnson on the IABS flush? If so. That's the way I flush it and performed it last year. But. May have to give that procedure a shot to see if that will clear it.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #12 of 26 Old Jul 11th, 2017, 10:39 am
Senior Member
 
Join Date: Jul 2002
Location: Pelham, AL, United States
Posts: 522
Re: ABS Failure?

Everything fine until you had a panic moment.
Was the ABS was activated?
Could poor output pressure be related to flexing brake lines?
Have you ever changed out the brake lines?
I think regular "exercise" of the ABS unit is a good thing.

_____________

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)
alabrew is offline  
post #13 of 26 Old Jul 11th, 2017, 4:05 pm
Member
 
K1200_Pav's Avatar
 
Join Date: Sep 2013
Location: Shropshire, , UK
Posts: 72
Re: ABS Failure?

Well worth doing the ABS flush as above, I did mine several times got to be a routine job. I was unlucky with my unit it gave up altogether and I decided to by pass the system. I striped the pump down, and mine had corrosion and rust on the internals.

There is a company that now makes a bypass unit with new electronics pack for the USA 2005 / UK 2004 units and a simple pipe hook up block rather than having to do what I did to bypass the pump. You may need to select the English option to get the page understandable.

https://rhelectronics.de/de/neu-und-...-life-kit-am0/
K1200_Pav is offline  
post #14 of 26 Old Jul 11th, 2017, 5:18 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

I was looking at there website. I didn't see that. Wonder how that works? I flush mine every 2 years. Mines an 2004 USA.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.

Last edited by james216; Jul 11th, 2017 at 7:06 pm.
james216 is offline  
post #15 of 26 Old Jul 11th, 2017, 5:28 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by alabrew View Post
Everything fine until you had a panic moment.
Was the ABS was activated?
Could poor output pressure be related to flexing brake lines?
Have you ever changed out the brake lines?
I think regular "exercise" of the ABS unit is a good thing.
Yes. And i don't know if it was. I guess it's possible it flexed. No. Never changed the brake lines. I believe they were relatively new when i bought it. At least the rear. Well. I'm most likely screwed. Bypass will most likely be necessary.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #16 of 26 Old Jul 12th, 2017, 5:14 am
Member
 
K1200_Pav's Avatar
 
Join Date: Sep 2013
Location: Shropshire, , UK
Posts: 72
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
I was looking at there website. I didn't see that. Wonder how that works? I flush mine every 2 years. Mines an 2004 USA.
Think the one on the Web site is for USA 2005 ones on wards, you would need to check with them to check what actual ABS system that their kit replaces.

I am not familiar which pre USA 2005 systems and only by passed the system on my UK 2004 / USA 2005 bikes.
K1200_Pav is offline  
post #17 of 26 Old Jul 12th, 2017, 8:14 am
Wrencher Extraordinaire
 
jzeiler's Avatar
 
Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,138
Re: ABS Failure?

You really need to get the code read so you can see the fault. If it is a high pressure fault you may be able to remove the relief valve and exercise it to clear the fault.

OK to remove this little bugger you will need a 27 mm (or 1 1/16) socket. Slide the rubber shield up to reveal the nut. There may not be enough clearance for the thickness of the socket so you will have to move the fitting next to the relief valve a few degrees to place a flat next to the relief valve. Use a 15 mm open end wrench to move it. Don't worry about a leak as these are all sealed by o-rings that are not a function tightness of the fitting.

The relief valve shown in the picture is the rear one - inboard on the 2001-2004 and out board on the 05 and up.
Attached Thumbnails
Click image for larger version

Name:	Relief Valve.jpg
Views:	58
Size:	130.7 KB
ID:	128825   Click image for larger version

Name:	Relief Valve 2.jpg
Views:	44
Size:	91.1 KB
ID:	128921  

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

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by jzeiler; Jul 12th, 2017 at 6:25 pm.
jzeiler is offline  
post #18 of 26 Old Jul 12th, 2017, 12:58 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by jzeiler View Post
You really need to get the code read so you can see the fault. If it is a high pressure fault you may be able to remove the relief valve and exercise it to clear the fault.
Is this going to cause system to need a bleed? And excersise it? The relief valve when i have it in my hand? I was looking at the link for RH Electronics in Germany. Would that second life kit work?

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.

Last edited by james216; Jul 12th, 2017 at 1:16 pm.
james216 is offline  
post #19 of 26 Old Jul 12th, 2017, 1:28 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by K1200_Pav View Post
Think the one on the Web site is for USA 2005 ones on wards, you would need to check with them to check what actual ABS system that their kit replaces.

I am not familiar which pre USA 2005 systems and only by passed the system on my UK 2004 / USA 2005 bikes.
So. You blocked the brake ports on ABS and ran lines direct from reserviors?

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #20 of 26 Old Jul 12th, 2017, 4:44 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Will a flush clear it?

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #21 of 26 Old Jul 12th, 2017, 6:02 pm
Member
 
K1200_Pav's Avatar
 
Join Date: Sep 2013
Location: Shropshire, , UK
Posts: 72
Re: ABS Failure?

Quote:
Originally Posted by james216 View Post
So. You blocked the brake ports on ABS and ran lines direct from reserviors?
This is what I did to bypass my ABS, a few hours work for my ABS system a USA 2005 model, UK 2004.


1. Drain the brake fluid from all circuits.
2. Tupa ware and petrol tank off.
3. Remove the steel brake lines coming off the ABS unit to the front flexible brake pipe union.
4. Remove the steel brake pipes for the rear brake off the ABS unit, the joint up by the Rear shock mounting can be tricky.
5. The reverse control unit will need to be removed temporarily to give access, worth marking the cables in some way I used different coloured tie wraps. I did this as any ident labels on my cables were gone.
6 The workshop manual says to remove the ABS holding tray out, in the end not needed to do so, though the ABS pump can be firmly stuck to the tray.Not sure from memory you might need to remove the tray mounting screws, one of which is awkward.
7. disconnect the ABS electrical connector off the pump and brake fluid levels plugs.
8. The next bit can be tricky / fiddly, lift the pump off it's mounting bracket and lift it out, a lot easier as the metal brake lines are out of the way, still a tight fit though.

9. The next bit is down to personal choice on how you do it. The first part is required as you need to retain the electronics unit. Remove the electrics cover, held on by 5 point star security screws. Sockets available off ebay or one can tap a torx bit in and do it that way.

10. Disconnect the leads going from the electronics board to the pump so the pump is isolated.

11. You can do the next bit can be done in a number of ways as you need to stop one of the dash lights coming on (warning triangle). One way is to strip the dash down and cover the led light as on the later LT's they don't use bulbs so you can't easily remove the led. I choose the easier option, I cut pin 9 or 10 (can't remember which one others may remember) coming from the circuit board to the connector but left the link so it could be reconnected at a later date if required and used heat shrink sleeving over the pins to insulate them from each other.

In the UK the by pass kit is two brake pipes one in the shape of an R clip for the front brakes and a length of brake pipe around 12" approx (never did measure it.

12. Fit the R pipe to the union on the head stock so the front flexible lines are now reconnected.

13. This is a fiddly bit as the second length of brake pipe needs to go from the union by the rear shock top mounting which you disconnected earlier to the the rear brake flexible brake pipe and needs to be bent in several places to avoid the rear suspension shock and requires a tight 90 degree bend by the top of the rear shock.

14. the brakes can now be bleed (might need to do it several times to get all the air out. and check for any leaks in the system. Fix any leaks and perform a final bleed. The one by the top of the rear shock was my awkward one for me with a slight leak.

15. The next bit is optional refit the board back onto the pump (leave pump wires disconnected) make sure all brake fluid is out of the pump. To save weight the optional bit is to leave the pump body off and just fit the electronics board, though doing this you will need to find a way to seal the board from the elements, so much easier just to refit it back on the pump.

16. Refit the pump into it's mounting tray and secure it and refit the electrical connector to the pump.

17. Refit the reverse control box and any other bits removed, ensuring all cables are fitted correctly

16 Open up the relay box on the side of the air filter box and remove the Blue ABS relay this stops the flashing nag light from operating.

17. Before reassembling the plastics, test everything works including the electrics.

18. You now have normal braking with NO ABS assistance.

19. Reassemble all the tupa ware / fuel tank and relay cover.

20. Enjoy the ride and the reliability of normal brakes.

What I did to seal the pump holes to stop any residue brake fluid coming out where the brake lines fit into the pump was to use the rubber caps of the brake like, fill them with silicon sealant and place back over the the hole and tie wrapped them in place.
K1200_Pav is offline  
post #22 of 26 Old Jul 12th, 2017, 6:10 pm
Senior Member
 
Join Date: Dec 2010
Location: Augusta, GA, USA
Posts: 220
Re: ABS Failure?

I flushed mine on my 06 and it didn't. Did the by pass afterwards. YMMV

Sammy

Sent from my SM-G935V using Tapatalk
sgroover is offline  
post #23 of 26 Old Jul 12th, 2017, 9:12 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Ok. I will see what the fault is and go from there. If it's high pressure. I will definitely try that.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #24 of 26 Old Jul 13th, 2017, 6:15 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Quote:
Originally Posted by K1200_Pav View Post
Well worth doing the ABS flush as above, I did mine several times got to be a routine job. I was unlucky with my unit it gave up altogether and I decided to by pass the system. I striped the pump down, and mine had corrosion and rust on the internals.

There is a company that now makes a bypass unit with new electronics pack for the USA 2005 / UK 2004 units and a simple pipe hook up block rather than having to do what I did to bypass the pump. You may need to select the English option to get the page understandable.

https://rhelectronics.de/de/neu-und-...-life-kit-am0/
Yea Got an answer back from RH Electronics today. It's translated into English so some words have one to many
letters or slight misspell. But basically it says. They do not offer the second life kit for the 04 without servos. it's to heavy. But sure didn't hesitate to tell me they can rebuild mine for 799 euros. Yea. I Don't think so.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #25 of 26 Old Jul 15th, 2017, 11:41 pm Thread Starter
Senior Member
 
james216's Avatar
 
Join Date: Jan 2013
Location: Garfield Hts, Ohio, USA
Posts: 1,367
Re: ABS Failure?

Ok. Took the gray battleship for a ride today cause i couldn't remember exactly what kind of braking i had. I was in such a hurry to get to my appt last Saturday that i just parked it and jumped in the car. So i go out today. Turn key on. Servo makes short whine, l. start it up. ABS light is flashing at 1HZ normal. I roll out. It goes out like normal. Apply brakes at the stop sign. Triangle pops up solid and ABS 4HZ flash illuminate immediately. I can barely hear servos whine. But boy i have brakes. Maybe not all servo assist. But defiantly not residual either. No way. I cruise around town. At 35-40 mph. I grab front or rear or both. She hauls down immediately.. I do notice at a stop. I don't quite hear the servos running like they normally would. I mean i really gotta listen now. I sort of hear them , but faint. If i shut off the ignition. And press the rear or front brakes. The servos fire. But not the loudnees they had. But man .She's got good enough brakes. And i tried locking up at least the rear tire. Couldn't do it. Is the ABS out? Are the servos working? Hmmm.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
james216 is offline  
post #26 of 26 Old Jul 16th, 2017, 8:58 pm
Wrencher Extraordinaire
 
jzeiler's Avatar
 
Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,138
Re: ABS Failure?

Just remember the input does not matter (front or rear) you get both front and rear every time. So your rear may be out but you would never know it because your fronts kick in when you hit the pedal. You may be only hearing one of the two servo motors so it sounds different.

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

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jzeiler is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
K 1200 LT ABS Brake failure VolkerM K1200LT 36 Oct 9th, 2015 2:55 pm
Trading Harley on an LT today WillieC K1200LT 25 Jun 18th, 2012 10:13 am
ABS unit gone again plonk K1200LT 9 Jun 17th, 2011 4:06 am
ABS II Failure captainasty K1200LT 2 Oct 3rd, 2005 3:46 pm

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome