One problem related to brakes failed has been reported for the 2009 Ford F-650. The most recently reported issues are listed below.
The contact owns a 2009 Ford F-650 sd. The contact stated that while driving at approximately 40 mph, the brake pedal was depressed but the brakes failed to respond. The contact had to make a sharp left turn to avoid crashing into a vehicle. The emergency brake was activated and shifted the gear shifter into slow range to be able to continue driving the vehicle. The vehicle was taken to a dealer where it was diagnosed that a control unit failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 17,000.