United States 89V101000
Ford Motor Company
The problem
SWITCHES MAY NOT ACTUATE THE SERVICE RESERVOIR LOW PRESSURE WARNING BUZZERS AND LIGHTS AT PRESSURES BELOW 60 POUNDS PER SQUARE INCH. CONSEQUENCE OF DEFECT: DRIVER WOULD NOT BE WARNED OF AIR BRAKE SYSTEM LOW PRESSURE AND LOSS OF BRAKE COULD BE EXPERIENCED WITHOUT WARNING.
What owners should do
REPLACE LOW PRESSURE SWITCHES.
Units 9198