How to reset 2001 Ford Windstar Van anti-theft

The battery on my 2001 Ford Windstar van went dead. It set off the anti-theft function - the blinkers are blinking and won’t stop. I tried to “bump the starter” several times to get it to start & get off the anti-theft function. Tried the following:

- Disconnected battery & installed a new one

- van starts & runs but flashers won’t stop

- Flasher switch has no effect

- tried locking & opening doors with a key

- what next?

Someone stole my owner’s manual … the dealer service department wants $104 to tell me how to do it. p.s. don’t buy a Ford from a Cedar Rapids dealer.

Look to download an owner manual at www.fleet.ford.com or www.motorcraft.com

Thanks very much - will see if I can find a fix in the manual.