11 problems related to windshield wiper/washer have been reported for the 1999 Ford F-150. The most recently reported issues are listed below.
The windshield wipers activate (turn-on) unexpectedly when driving and switch is in the off position. Dealership says the control module is "defective" but will not warranty the repair since there is no recall. It is a definite safety issue as the distraction could arise at anytime while driving. Ts.
Windshield wipers activate themselves for no apparent reason. This is distracting to the driver and could be a potential hazard.
Windshield wipers intermittently engage without warning. Jlg.
Windshield wipers come on an off randomly while driving.
While driving windshield wipers come on without application. Problem was reported to dealership. Problem has not been corrected. Please provide any further information.
Electronic module causes windshield wipers to operate in the off mode without being turned on. Causes repeated scraping and scoring of dry windshield and distraction to driver.
Windshield wipers just arbitrarily coming on. It's been a problem ever since we bought our 1999 f150 but was much more sporadic than it is now. Now it just seems like the wipers have a mind of their own and keep coming on. It is getting quite annoying.
This has happened several times and is not correctable per Ford.
Windshield wiper suddenly comes on without being switched by the driver. This is very startling and distracting to the operator of the vehicle. I feel it is a safety concern because it frightens the operator.
The force of the wind over the hood directs the stream of washer fluid from the washers to a place below the wiper blades due to design.
At highway speeds, washer spray is to weak. It only gets the bottom 1/3 of windshield. This won't let you clean the section in front of your eyes. Problem with cleaning spray during winter driving or light rain.