Last week I made a sharp left turn and my 2000 Exp started beeping at me. Since then every time I start it up I hear 5 sets of 5 beeps. Does anyone have a clue what this is? Thank you!

Any other lights or warning indicators on? Does it sound like the stock buzzer/chime?

Check to see if the passenger side air bag light is operating properly. Usually this indicates the bulb is burnt out.

5 beeps 5 times on ford means the airbag warning light is inop - this is the primary light in the cluster. normaly just a bulb but could also be wiring.