Ford F-150 owners have reported 4 problems related to turn signal flasher unit (under the exterior lighting category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Ford F-150 based on all problems reported for the F-150.
When steering wheel is not all the way up the turn signals, hazard lights, and the brake lights do not work. I have taken it to the dealership and they state that there is a clip in the steering column that is broke. This all happened 2 months after I bought the truck and they will not fix it due to there being no warranty. At the same time the keyless entry stopped working as well as the automatic door locks. They stated that this was because the motor in both doors had went out. Seems odd to me that they would both go at the same time.
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When the turn signal light flasher failed to function when engaged. The signal indicator light on the dashboard didn't come on. Consumer felt that this may be caused by an electrical system failure because the windshield wipers engaged by themselves. Dealership will be contacted.
Turning signal was not working properly. Consumer had to push real hard to left or right to make the turning signal to work. Contacted dealer.
Turn signals have intermittent failure problem when humidity level is high. Brake system locks up when conditions are damp when initialling using truck for the day.