iABS problems R1200RT

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mrtg
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iABS problems R1200RT

Postby mrtg » Fri Aug 10, 2018 8:46 pm

Hi
I’m new to forum and wonder if anyone might be able to help me, I have a 2005 r1200rt with an abs issue, the original fault was the abs releasing under heavy braking (the wheels weren’t locking) and the brake fault light flashing after. Since then I’ve totally flushed and bled the system (all 4 circuits) just test rode it, bike seems ok until you apply very heavy braking on rear circuit then fault light comes on and servo stops whining (rear circuit only) front seems fine. Bike resets when power turned off, seems ok until heavy braking re-applied to rear.
I’ve invested in an elm327 reader and motoscan software, however fault code given means nothing to me (wheel circuit rear code 618c) anyone any ideas, suggestions?


Thanks in advance Tony

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kent_instructor10
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Re: iABS problems R1200RT

Postby kent_instructor10 » Fri Aug 10, 2018 11:58 pm

I believe that fault code indicates that the brakes have moved to residual braking, which would indicate a problem with the servo system, which sounds correct from your symptoms.

Im sure more technically able members will be able to assist further.
Now: 2013 R1200RT SE; 2012 R1200GS Triple Black; Previously: K1100RS, R1200RTPx2, R1100RTPx2, R1100RT, R80RT, K100LT and Jap stuff!
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goldenoldy
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Re: iABS problems R1200RT

Postby goldenoldy » Sat Aug 11, 2018 7:28 am

Hi Tony. Same model as mine. What sequence are the lights flashing at? Sounds the same as mine, first the rear then the front failed. For me the way forward was to have the system removed. Leaving me with conventional braking which is excellent. Roy Gardner did mine. Made no difference to insurance or MOT.
Brian

mrtg
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Re: iABS problems R1200RT

Postby mrtg » Sat Aug 11, 2018 8:43 am

Thanks Brian, bike seems ok with normal braking, however when I force rear abs to cut in, I get red warning triangle and brake failure light rapidly flashing, book states one circuit in residual braking mode, other thing is rear servo stops working till reset with key. Was thinking same as you regarding removing abs as I like riding the bike, very interesting regarding insurance mind.

Thanks Tony

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Re: iABS problems R1200RT

Postby Mike D » Sat Aug 11, 2018 11:09 am

Maybe you have not bled all the air out of the rear systems. I assume your code reader does not have the function that a GS-911 has, in that there is a test to check if you have evacuated all the air from the system.


MIke

mrtg
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Re: iABS problems R1200RT

Postby mrtg » Sat Aug 11, 2018 6:10 pm

Thanks Mike

Don’t think it does on my type of bike but will check

Regards
Tony

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Re: iABS problems R1200RT

Postby mrtg » Thu Aug 30, 2018 5:38 pm

Hi there

Have worked through responses, have bled rear circuits both control and wheel until I’m certain no air is present, checked gaps and clearances, cables etc can’t find anything untoward. Took bike for another test ride, deliberately didn’t try to activate abs, after 30 mins of riding stopped at T junction holding bike on rear brake, as I pulled away noticed 4hz flashing brake failure light and red warning triangle on. I’ve contacted motoscan about the fault code that’s appeared again (rear brake circuit 618c) there response was they have no further information and to contact BMW, loads of help, would suggest others maybe think twice about this software as the support so far has left me cold.
Anyway upshot is I’m thinking of removing the iABS, happy with how this is done, direct link brakes and remove ecu from abs and reconnect electrics, my question is what’s the latest and best way of stopping brake failure light and red warning triangle illuminating, my bikes an RT with canbus, so if anyone’s aware of a better method than masking the indication would appreciate it.

Thanks Tony

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Re: iABS problems R1200RT

Postby goldenoldy » Thu Aug 30, 2018 7:12 pm

Hi. When Roy did mine he blanked them off internally on the dash.
Brian

mrtg
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Re: iABS problems R1200RT

Postby mrtg » Thu Aug 30, 2018 7:25 pm

Thanks Brian, where’s Roy Gardener based,not anywhere Durham with my luck

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Re: iABS problems R1200RT

Postby goldenoldy » Thu Aug 30, 2018 7:31 pm

Just out of interest Tony, can you hear the hydraulic pump whine when you apply either then foot or hand lever? Mine went on the front first, I could still hear the pump, then went on the rear and the pump went silent. Roy is in Croston South of Preston.
Brian

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Re: iABS problems R1200RT

Postby mrtg » Thu Aug 30, 2018 7:45 pm

Cheers Brian, I can hear the servo when I apply either front or back brake before flashing brake failure light occurs, after that only from front, rear circuit has the issue. Both work again after switching off and on.

Tony

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Re: iABS problems R1200RT

Postby goldenoldy » Thu Aug 30, 2018 8:51 pm

Not an expert at all, but it sounds like the pump is ok. I have read of a duff battery causing issues. Even if it’s strong enough to start the bike it can cause abs/servo problems if it’s slightly down. Brian.

mrtg
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Re: iABS problems R1200RT

Postby mrtg » Thu Aug 30, 2018 8:57 pm

Thought of that one, already replaced sadly :-( gut feeling is to remove at the minute, as I’m more worried it fails when I need it

Tony

mike pace
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Re: iABS problems R1200RT

Postby mike pace » Mon Sep 03, 2018 5:37 pm

I have a 1200gs with the abs removed. No problems at all and stops well.


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