K11 Owners Group

endoman100

I finaly replaced my wal-mart batt with a BMW copy. The fuel pump noise went away completly. Son-of-a-gun who would have thought that..
I replaced the batt because of my abs lights flashing. The abs resets and works great until you turn it off and restart and then damn lights start flashing again. Bastards..looks like black tape for me again. But on a positive side atleast the f&*cking fuel pump noise stopped.
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In the words of the stones
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Yes It Is
1993 K1100RS

Flying Duck · Posted: Thu Apr 02, 2009 7:30 pm Post subject:

In case you didn't know, the ABS lights are supposed to flash until you start moving. The brain needs to go through it's self-test - and part of that is testing the sensors which can't be done when stopped.
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mnb · Posted: Thu Apr 02, 2009 8:16 pm Post subject:

A slightly weak battery will fail to init the ABS system properly. The lights will flash and the flashing will not stop once you start moving.

Temporary Solution: Start the bike. Let it warm up for a minute or so. Stop the engine. Turn the ignition off at the key. Back on. Restart the bike. The lights should flash normally (together not alternately) and stop once you start moving (after about 10').

You will experience this problem more often in the winter as batteries hold less of a charge when it's colder outside. My current battery started doing it a couple months ago, but now that it's warmer here in California, it's happy as a clam. I know from this behavior that the battery is still usable, but not quite as healthy as it used to be. I expect it'll be a tad more trouble next winter. You are MUCH less likely to experience this if you keep your bike on a battery tender. I have one. I always forget to use it.
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1997 BMW K1100LT ABS Special Edition
2003 Husqvarna TE610e
2007 Harley Davidson Road King
2009 BMW F800GS
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endoman100 · Posted: Thu Apr 02, 2009 8:56 pm Post subject:

k11gaz · Joined: 31 Mar 2009 Posts: 22

I had a chat to a BMW mechanic in Guildford recently and he told me that if the battery drops below 11.7V then the computer takes the resources away from non-essential systems (ie ABS) and diverts them to more important area like keeping the engine going. So that is why your ABS lights flash when you have a poor battery.

I use an 'Optimate' clone purchased from my local auto-mart to keep my battery topped up when i am not riding it, and I dont get the flashy ABS light thing after about 10 secs of running when the compy finishes its self test cycle.
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1984 CX650 Turbo 48k miles
1993 K1100LT 63k miles

Ride it like ya stole it !!

Flying Duck · Posted: Fri Apr 03, 2009 1:31 am Post subject:

Flying Duck · Posted: Fri Apr 03, 2009 2:00 am Post subject:

Stoked Steve · Posted: Fri Apr 03, 2009 7:47 am Post subject:

Duck in reference to your last post, if I added the Catz lights to my '93 with the smaller alternator, would I have the issues you mentioned? I don't have heated grips or run heated clothing (yet).

I am concerned about the output being able to handle those lights and properly charge the battery as well.
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Virginia Beach, VA
93 K1100RS Mystic Red SOLD
12 Suzuki DL650A VStrom

Flying Duck · Posted: Fri Apr 03, 2009 8:21 am Post subject: