ABS - when you turn the ignition on make sure everything else is turned off i.e. lights, heated grips or any other current drain. Turn ignition on then wait, don't press the starter straight away. The abs system is running though it’s checks. One of the checks is the battery voltage, it must read 12volts, if it’s checking as you press the starter it’ll read 8-9volts due to the draw from the starter motor and the abs disarms itself. Give it a few seconds before pressing the starter ... to satisfy yourself that there are no actual ABS faults, turn on the ignition (don’t press the starter) and with both ABS lights flashing together push the bike a few yards at a fast pace, if no faults the lights should extinguish and you’ll hear a “clunk” from the abs as it activates it’s system. ... be aware that some of the advice in previous posts isn’t relevant to your ABS system, they’re for the servo/abs system, a completely different kettle of fish with its own brand of unique fishy problems and cures.