abs warning light

I have a 1999 r1100s. As you know, the ABS lights flash back and forth upon startup and then go out once you pull away. Occasionally, the lights on my bike continue to flash after I start off. If I cycle the key off and then on while riding the ABS light go out, so assume (perhaps falsely) that...

I may be experiencing a failure of the iABS on my '04 1150 GS. I purchased the bike new and have done all maintenance and repairs during 48,000 miles of trips covering 44 of the States and Canada. Using funnel technique brakes were bled annually except for 2012 & 2013. Broke a few bones late...