Ford 2006 Ranger Owner's Manual page 13

It may take a long period of time for the system to detect an
improperly installed or properly re-installed fuel filler cap
depending on driving and fuel tank level conditions. Refer to Fuel
filler cap in the Maintenance and Specifications chapter.
Brake system warning light: To
confirm the brake system warning
light is functional, it will
momentarily illuminate when the
ignition is turned to the ON position
when the engine is not running, or in a position between ON and START,
or by applying the parking brake when the ignition is turned to the ON
position. If the brake system warning light does not illuminate at this
time, seek service immediately from your authorized dealer. Illumination
after releasing the parking brake indicates low brake fluid level or a
failure to brake proportioning and the brake system should be inspected
immediately by your authorized dealer.
Driving a vehicle with the brake system warning light on is
dangerous. A significant decrease in braking performance may
occur. It will take you longer to stop the vehicle. Have the vehicle
checked by your authorized dealer.
Anti-lock brake system: If the
ABS light stays illuminated or
continues to flash, a malfunction has
been detected; have the system
serviced immediately by your
authorized dealer. Normal braking is still functional unless the brake
warning light also is illuminated.
Airbag readiness: If this light fails
to illuminate when ignition is turned
to ON, continues to flash or remains
on, have the system serviced
immediately by your authorized
dealer. A chime will also sound when a malfunction in the supplemental
restraint system has been detected.
2007 Ranger (ran)
Owners Guide (post-2002-fmt)
USA (fus)
Instrument Cluster
! P
BRAKE
ABS
13