One problem related to windshield wiper/washer has been reported for the 2004 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Ford F-150 based on all problems reported for the 2004 F-150.
Driver's windshield wiper leaves 6" blind spot uncleared/unwiped in line of sight along driver's windshield pillar. Almost hit pedestrian as a result of not being able to see. Also pulled out at intersection in front of another car because unable to see. Dealer can not fix because the wiper is "keyed" to that position only. Ford has been unwilling to resolve issue. Other owners complaining of safety hazard too.