1995 Ford Explorer --- beeps inside cabin and clunk under hood?

ford
explorer
#1

95 explorer beeps 5 times for 5 intervals of 5 times; stops…then again…beeping was first noticed today after changing headlamp; ALSO clunking under hood; believe there is hole in radiator as anti-freeze keeps leaking out. Help?

#2

The beeps are a warning that the SRS (air-bag) warning light isn’t working correctly.