1998 FORD F150 key battery

High beams
Illuminates when the high beam
headlamps are turned on.
Anti-theft system (if equipped)
Refer toPerimeter alarm system
in theControls and features
chapter.
Charging system
Momentarily illuminates when the
ignition is turned ON and the
engine is off. The light also
illuminates when the battery is not
charging properly, requiring
electrical system service.
Oil pressure/Engine coolant
This light will come on when the
key is in the ON position and the:
²engine coolant temperature is
very high
²engine oil pressure is low
The light serves as a notice that a
system needs your attention and to
check the engine coolant
temperature gauge and the engine
oil pressure gauge.
Refer toEngine coolant
temperature gaugeandEngine
THEFT
Instrumentation
10

2. Press the power door unlock
control three times.
3. Turn the ignition key from ON
to OFF.
4. Press the power door unlock
control three times.
5. Turn the ignition back to ON.
The horn will chirp.
6. Press the unlock control, then
press the lock control. The horn
will chirp once if autolock was
deactivated or twice (one short
and one long chirp) if autolock was
activated.
7. Turn the ignition to OFF. The
horn will chirp once to confirm the
procedure is complete.
Replacing the battery
The transmitter is powered by one
coin type three-volt lithium battery
CR2032 or equivalent. Typical
operating range will allow you to
be up to 10 meters (33 feet) away
from your vehicle. A decrease in
operating range can be caused by:
²battery weakness due to time
and use
²weather conditions
²nearby radio towers
²structures around the vehicle
²other vehicles parked next to
the vehicle
To replace the battery:
1. Twist a thin coin between the
two halves of the transmitter near
Controls and features
45

the key ring. DO NOT TAKE THE
FRONT PART OF THE
TRANSMITTER APART.
2. Place the positive (+) side of
new battery in the same
orientation. Refer to the diagram
inside the transmitter unit.
3. Snap the two halves back
together.
Replacing lost transmitters
Take all your vehicle's transmitters
to your dealer for reprogramming
if:
²a transmitter is lost or
²you want to purchase additional
transmitters (up to four may be
programmed).
To reprogram the transmitters,
place the key in the ignition and
switch from OFF to ON five times
in rapid succession (within 10
seconds). After doors lock/unlock,
press any button on all
transmitters (up to four). When
completed, switch the ignition to
OFF.
All transmitters must be
programmed at the same time.
Reprogramming transmitters
To reprogram all transmitters,
place the key in the ignition and
switch from OFF to ON eight times
in a row (within 10 seconds). After
doors lock/unlock, press any
button on all transmitters (up to
Controls and features
46

²Do not work on a vehicle with
the engine running in an
enclosed space, unless you are
sure you have enough
ventilation.
²Keep all lit cigarettes, open
flames and other lit material
away from the battery and all
fuel related parts.
If you disconnect the battery, the
engine must ªrelearnº its idle
conditions before your vehicle will
drive properly, as explained in
Batteryin this chapter.
Working with the engine off
²Automatic transmission:
1. Set the parking brake fully and
ensure the gearshift is securely
latched in P (Park).
2. Turn off the engine and remove
the key.
3. Block the wheels to prevent the
vehicle from moving unexpectedly.
²Manual transmission:
1. Set the parking brake, depress
the clutch and place the gearshift
in 1 (First).
2. Turn off the engine and remove
the key.
3. Block the wheels to prevent the
vehicle from moving unexpectedly.
Maintenance and care
153