'03 RS/Integral ABS: Two years ago I posted an article on bleeding these brakes as a new owner of this bike and unfamiliar with this version of ABS. My '98 RT was a snap compared to this animal. I got myself in trouble by erroneously thinking that the fluid for the front calipers was coming from the front reservoir...WRONG! The SpeedBleeders were soon spouting air and I knew I was in trouble. I got through the procedure by creating a vac pump using a small turkey baster pilfered from my wife's kitchen tool drawer. Once I figured out that the combined reservoirs located at the rear was the source for the fluid replacement (at this stage in the process), I soon had clean fluid coming through the bleeders. I was able to bleed the accessible bleeders on the ABS controller, but probably not in the correct order--a result of not knowing what I was doing.
I perused this forum last week and found the address for the detailed instructions, printed them out, studied them in great detail, then set about to do it correctly this time around. What a difference it makes to turn on the ignition and let the ABS controller pumps do the actual caliper bleeding! With the battery removed before proceeding to the controller itself, I did not
purchase the $68 "BMW Special Spanner" to access the "F2 & R2" bleeders as detailed in the instructions. Rather, I found a "work-around" using a 1/4" drive 7mm socket. Of course you can't get a drain tube over the bleeder with the socket in place, so instead, I stuffed paper towel under the bleeder in a large enough quantity to absorb the fluid. The box surrounding the battery and ABS controller is stainless steel, so errant fluid does not come in contact with anything that will be damaged and all was, in fact, contained within the towelling.
Otherwise, I followed these detailed instructions explicitly and had no problems. Once completed and with the battery reconnected, I turned on the switch and got 4 fast blinks of the ABS light followed by one-every-second. I thoroughly tested the brakes while in the garage with the engine running. I've since put 200 miles on it with no problems--the lights indicating "all is well with the ABS".
My advice: go to the address. Download the PDF file. Print all the pages. Study the photos. Do everything in the proper order as outlined in the instructions. And be very grateful to this guy. He's done us all a huge favor and saved us some big bucks.