FORD 2002 F-150 v.2 - Manual (Page 12)

Check fuel cap
Illuminates when the fuel cap is not
installed correctly. Check the fuel
cap for proper installation. When
the fuel filler cap is properly
re-installed, the light(s) will turn off
after a period of normal driving.
Continuing to operate the vehicle with the check fuel cap light on,
mis-installed can activate the Service Engine Soon/Check Engine
warning light.
It may take a long period of time for the system to detect an
improperly installed fuel filler cap.
For more information, refer to Fuel filler cap in the Maintenance and
specifications chapter.
Brake system warning
To confirm the brake system
warning light is functional, it will
momentarily illuminate when the
ignition is turned to the ON position
(alternatively for some vehicles when the ignition is moved from the ON
position to START position, the light will momentarily illuminate prior to
reaching the START position). It also illuminates if the parking brake is
engaged. If the brake system warning light does not illuminate as
described, seek service immediately. Illumination after the parking brake
is released indicates low brake fluid level or a brake system malfunction
and the brake system should be serviced immediately by a qualified
technician.
Refer to Brakes in the Driving chapter for more information.
Instrument Cluster
12