2002 Ford Explorer 4wd not engaging---

A few weeks ago my battery was too low to start engine; got a jump start, and after that my 4x4 high and 4x4 low lights continue to flash on the dash display about every 2 miles. Now I have discovered that my 4wd system is not engaging and push buttons do not function. Suggestions before I take it into the dealer???

Suggestion: Consult the owner’s manual. What does it say about the flashing lights? It’s hard to believe a dead battery renders the 4WD inoperable on this vehicle.

You might want to consider having the trouble codes (if any) read at a local parts store. Most will do it for free, and if there are any codes they may help you figure out what’s wrong.