Originally Posted by Mike_Struthers
Greetings all. Had the dreaded ABS module replaced on my K1200GT (2004) recently,
and since then it hasn't run much, so battery died. Took it off bike as per manual, charged nicely, still in good shape, bike starts well...but.... Now have alternating slow 1Hz flashing ABS and <!> warning lights, and BMW says I have to take it to their shop for a 2-hour "software reset".
When I re-fitted the battery I rotated the throttle twice, full travel, before starting. Sequence was Ignition on/off/on/cycle throttle X2/off/on/start.
Is it really necessary to go to the BMW shop for a reset?? I don't see this mentioned in my manuals.
Great site, keep it up.
Your dealer is either confused or not honest. He might think you have an earlier generation K1200RS (before 2001 for Europe) that is equipped with ABSII (also called ABS2). For these earlier ABS modulator you had to visit dealer for a fault reset - not anymore with integral-ABS (with servos) that you have on a 2004.
These Integral-ABS are self check at every ignition ON phase during the first 5 seconds. Every parameters is reset during self-check:
(1) low battery voltage check
(2) fluid level in 2 sections container on right side under seat (see picture)
(3) brake switches off (means lever or pedal not pressed during self-check)
(4) brake switches connected (in case of broken switch or wires)
(5) minimum pressure attained inside modulator
In most cases, it is either item (1) battery, (2) fluid level, (3) defective or badly adjusted brake switch(es). For a defective ABS unit , item (5) above, you need to use a GS911 or the dealer's computer to confirm the internal fault code.
After ignition ON, do not start, wait for 6 seconds for ABS self-check to complete: at that point read battery voltage with Voltmeter. Be prepared by removing seat and toolbox before the ignition is tuned ON. BMW has never published the minimum voltage that would trigger a fault. My best guess is that a good battery should still give you 12.2 volts at that point (some current is being used by bike electronics, dash and headligth+taillignt).
In one of the 2 owners manuals, you will find a table of all possible combination of faults of the 2 red dash warnings. This is a starting point to help you do a quick diagnostic. See attached picture from a page in manual.
Let us know what you find....