K11 Owners Group

chas · Posted: Fri Nov 05, 2010 3:01 pm Post subject: 1993 K1100RS ABS lights

Can anyone confirm the meaning of the ABS warning lights (ABS 1)? Should they be on solidly when the ignition is turned on, and flashing if there is a fault?

I've had to do an ABS reset once in the past, but since then have had no problems - until I bought an Optimate charger. After leaving the bike for 3 weeks with the Optimate connected, I now have the flashing ABS lights and fault code 7, and can't clear the fault.

Flying Duck · Posted: Fri Nov 05, 2010 3:17 pm Post subject:

Sounds like your ABS brain might be fried. Try resetting it every few days and it MAY come back to life.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

chas · Posted: Fri Nov 05, 2010 3:41 pm Post subject:

Flying Duck · Posted: Fri Nov 05, 2010 4:03 pm Post subject:

If it's a "smart" charger that shouldn't kill the ABS brain. I run my bikes on Battery Tender Jr. tenders and have no issues.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Tim (Midland Section) · Posted: Fri Nov 05, 2010 7:46 pm Post subject:

Tis common for an ABS 1 brain to fry to code 7, my 93 K did that, replaced the brain, then sold the bike for an ABS2 model. A duff battery usually causes this. Sometimes they recover.
_________________
Regards Tim,

Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
#485

chas · Posted: Sat Nov 06, 2010 2:34 pm Post subject: Re: 1993 K1100RS ABS lights

Flying Duck · Posted: Sat Nov 06, 2010 2:37 pm Post subject:

The lights flash together until you ride off and it has a chance to test the sensors. If you're getting an error code at the diagnostic plug then it's in fault mode.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

chas · Posted: Sat Nov 06, 2010 2:48 pm Post subject:

Stoked Steve · Posted: Sat Nov 06, 2010 7:57 pm Post subject:

Have you tried disconnecting the battery for awhile? Sometimes that will reset things.

Not as likely, but the gap clearances at the sensors can cause issues. After a rear wheel brake rebuild, I was getting the flashing lights. With the help of Scott Anderson, removing one of the shims got the clearance back in spec and now the lights go off right away after rolling just a few feet.

Just throwing darts...
_________________
Steve
Virginia Beach, VA
93 K1100RS Mystic Red SOLD
12 Suzuki DL650A VStrom

chas · Posted: Sun Nov 07, 2010 5:05 am Post subject:

Stoked Steve · Posted: Sun Nov 07, 2010 11:07 am Post subject:

According to the Optimate website, it is a "smart" charger that will charge and then maintain a battery, for months even, just like a battery tender.

It shouldn't have hurt anything. I keep mine plugged in a battery tender all the time it is parked in the garage, year round.

I often get an ABS flashing issue whenever I remove and re-install the wheels. Maybe check the gap clearance at the front sensor and see if it's in spec. Maybe even loosen the front wheel and jiggle it around and re-tighten.

I find it's usually something simple and not a major component failure.
_________________
Steve
Virginia Beach, VA
93 K1100RS Mystic Red SOLD
12 Suzuki DL650A VStrom

chas · Posted: Sun Nov 07, 2010 4:02 pm Post subject:

SugarHillCTD · Posted: Sun Nov 07, 2010 9:18 pm Post subject:

Stoked Steve · Posted: Sun Nov 07, 2010 9:42 pm Post subject:

FIX the problem, don't cover it up!

(although the check engine light on my Silverado is on and after the shop turning it off twice, it comes back on, so, I'm thinking the black tape might be the cure (rather than the $87 "smoke test" to find out which $300 component has failed!)
_________________
Steve
Virginia Beach, VA
93 K1100RS Mystic Red SOLD
12 Suzuki DL650A VStrom

granth · Posted: Sun Nov 14, 2010 6:40 pm Post subject:

I use an 0ptimate charger on my ABS11 equipped K1100RS and it is hooked up continuously while in my garage,without problems.I have used Optimates since the early 90's and have never had an issue with any of them,for what its worth. Question

_________________
1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM.

chas · Posted: Mon Nov 15, 2010 1:20 am Post subject:

I'll try the bike again next week when I'm back for the weekend (I'm working away). Can anyone confirm the reset procedure for ABS1?

chas · Posted: Sat Mar 19, 2011 5:55 am Post subject:

Update:

Finally got it fixed Laughing

I tried a new reset switch and second-hand relays - no change. Then the bike went in for a service (not a BMW dealer, but they seem to know their stuff). So I asked them to take a look at the ABS, and they found fault code 5 (low battery voltage), and reset it. Strange, coz I found code 7.
It's been connected to the Optimate for another 4 weeks since then, and the ABS is still working.

What I'd like to know is (a) how I got a different fault code and (b) why my attempts at resetting didn't clear the fault.

Anyway, it's working, and the lights go out as soon as the bike moves (even backwards!).

granth · Posted: Sat Mar 19, 2011 9:57 am Post subject:

Glad its fixed,its a real headache when you cant track it down !

One trick I have heard of for "fixing" problem ECUs,is to put them in the Freezer overnight, in a sealed plastic bag, remove them and allow them to reach room temperature and try them again.A friend of mine in the trade says it often works. Apparently the process erases temporary fault codes but does not affect the" burnt in" software? I guess you have lost nothing if you think its fried anyway ?

Comments ? Idea

_________________
1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM.

Flying Duck · Posted: Sat Mar 19, 2011 10:05 am Post subject:

I've seen the seven and then five thing before on K75 ABS I brains which are quite similar to ours. Maybe it was "stacking" fault codes and a double reset was in order. (Just a guess.)
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

SugarHillCTD · Posted: Sat Mar 19, 2011 10:35 am Post subject:

or your the planets were aligned differently when you tried a reset.

(after having a '94RS- briefly, a '93RS and now a '92RS and multiple ABS 1 and 2 faults, I now believe in voodoo, witchcraft and the Loch Ness monster)

John
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.