Agree with John on no bleeding should be necessary. You will have to "touch the caliper" though as after removing the old pads, you'll need to retract the pistons in the caliper in order to get enough room to get the new pads in. I use a large c clamp or big pair of channel lock pliars. As the piston moves back, the level of brake fluid will rise in the master cylinder. Take care it doesn't overflow as you may get air in the system and then you'll have to bleed them and air in an ABS is a nightmare.