RemedyTook the center dash panel around radio off...indicator light was disconnected. Reconnected and no more code 18.

Thanks for your quick response. I am sure the fault is a result of indicator disconnect when I intalled the original radio. Sounds as though I need to go to the dealer so they can verify and reset the fault. Thanks again!

I had the aftermarket radio ripped out and stolen from my 04 F-150. No dash damage was done but after I replaced the original radio the airbag warning light flashes a code 18 (one flash...eight flashes). Is there an alternative to taking to the dealer for a reset? Thank you.