1998 Mercury Mountaineer key battery

Anti-theft system (if equipped)
Refer toAnti-theft systemin the
Controls and featureschapter.
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.
Check gage
Illuminates when the key is in the
ON position and the engine coolant
temperature is high, the engine oil
pressure is low or the fuel level is
near empty. Refer toEngine
coolant temperature gauge,
Engine oil pressure gaugeor
Fuel gaugein this chapter for
more information.
Door ajar
Illuminates when the ignition
switch is in the ON or START
position and any door is open.
THEFT
CHECK
GAGE
DOOR
AJAR
Instrumentation
10

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
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.
Controls and features
48

door(s) or sound the personal
alarm.
The system automatically turns off
after 25 seconds or when the
ignition is turned to the START or
ACC position. The dome lamp
switch (if equipped) mustnotbe
set to the OFF position for the
illuminated entry system to
operate.
The inside lights will not turn off
if:
²they have been turned on with
the dimmer control or
²any door is open.
Battery saver will shut off the
interior lamps 45 minutes after the
last door is closed.
Autolock
Autolock is a feature that will
automatically lock all doors when:
²all vehicle doors, liftgate and
liftgate window are fully closed
²the ignition key is in the ON
position
²you shift into or through R
(Reverse)
²the brake pedal is released
The autolock feature repeats when:
²any door is opened and then
closed
²the brake pedal is released
Deactivating autolock
Before following the activation or
deactivation procedures, make sure
Controls and features
50

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
1. Set the parking brake 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.
Working with the engine on
1. Set the parking brake and
ensure the gearshift is securely
latched in P (Park).
2. Block the wheels to prevent the
vehicle from moving unexpectedly.
Do not start your engine
with the air cleaner
removed and do not remove it
while the engine is running.
Maintenance and care
155