FORD 2011 F-550 v.4 - Manual (Page 269)

ABS warning lamp
The ABS lamp in the instrument
cluster momentarily illuminates
when the ignition is turned on. If
the light does not illuminate during
start up, remains on or flashes, the
ABS may be disabled and may need to be serviced.
Even when the ABS is disabled,
normal braking is still effective. If
your BRAKE warning lamp
illuminates with the parking brake
released, have your brake system
serviced immediately by an authorized dealer.
Parking brake
To set the parking brake, press the
parking brake pedal down until the
pedal stops.
The BRAKE warning lamp in the
instrument cluster illuminates and
remains illuminated until the
parking brake is released.
ABS
P !
BRAKE
P !
BRAKE
Driving
269
2011 F-250/350/450/550 (f23)
Owners Guide, 4th Printing
USA (fus)