As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE, DISCOVERED EMERGENCY LIGHT NOT ARMED CAS MESSAGE REMAINS ILLUMINATED WITH EMERGENCY LIGHT SWITCH IN THE "ARM" OR "ON" POSITION. REPLACED FWD EMERGENCY BATTERY WITH "TESTED" UNIT IAW P300 AMM 33-52-01. OPS CHECK GOOD PN 6450LS-00 S/N 000898.