As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABORTED TAKEOFF DUE TO ACCESSORY DOOR UNLOCKED TAIL ANNUNCIATOR AND MASTER CAUTION LIGHTS ILLUMINATED ON TAKEOFF ROLL AT APPROXIMATELY 70 KNOTS, ABORTED TAKEOFF. TROUBLESHOT TO SHORTED WIRES OUT BACK SIDE OF BATTERY DOOR LOCK SENSOR. REMOVED AND REPLACED SWITCH. OPS CHECK GOOD, ALL WORK DONE IAW CESSNA 560XL MM CHAPTER 52-70-00.