As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING: EMERGENCY LIGHTS WERE ILLUMINATED IN THE ARM POSISTION WITH ALL ELECTRICAL BUSES OPERATING NORMALLY. ATTEMPTED RESET PROCEDURE IN THE POH WITHOUT LUCK. CORRECTIVE ACTION: REPLACED EMERGENCY BATTERIES. OPS CHECK GOOD. IAW PHENOM 300 AMM 33-52-01.