One problem related to turn signal switch has been reported for the 2007 Ford F-550. The most recently reported issues are listed below.
The contact owns a 2007 Ford F-550 sd. The contact stated that while driving 30 mph, the brake lights and turn signal lights failed. The contact notified the dealer and they stated that the multi- function switch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 74,000.