2002 FORD THUNDERBIRD Owners Manual

warning light will come on. If the vehicle has continuous vibration or
shudder in the steering wheel while braking, the vehicle should be
inspected by a qualified service technician.
The ABS operates by detecting the
onset of wheel lockup during brake
applications and compensates for
this tendency. The wheels are
prevented from locking even when
the brakes are firmly applied. The
accompanying illustration depicts
the advantage of an ABS equipped
vehicle (on bottom) to a non-ABS
equipped vehicle (on top) during hard braking with loss of front braking
traction.
ABS warning lampABS
TheABSwarning lamp in the instrument cluster momentarily illuminates
when the ignition is turned to the RUN position. If the light does not
illuminate momentarily at start up, remains on or continues to flash, the
ABS needs to be serviced.
With the ABS light on, the anti-lock
brake system is disabled and normal
braking is still effective unless the
brake warning light also remains
illuminated with parking brake
released. (If your brake warning lamp illuminates, have your vehicle
serviced immediately.)
Using ABS
²In an emergency or when maximum efficiency from the four-wheel
ABS is required, apply continuous force on the brake. The four wheel
ABS will be activated immediately, thus allowing you to retain full
steering control of your vehicle and, providing there is sufficient
space, will enable you to avoid obstacles and bring the vehicle to a
controlled stop.
²The anti-lock system does not decrease the time necessary to apply
the brakes or always reduce stopping distance. Always leave enough
room between your vehicle and the vehicle in front of you to stop.
²We recommend that you familiarize yourself with this braking
technique. However, avoid taking any unnecessary risks.
P!
BRAKE
Driving
137

Parking brake
Apply the parking brake whenever
the vehicle is parked. To set the
parking brake, apply the brake pedal
and pull the handle up as far as
possible.
The BRAKE warning lamp in the
instrument cluster illuminates and
remains illuminated (when the
ignition is turned to to the RUN
position) until the parking brake is
released.
The parking brake is not recommended to stop a moving vehicle.
However, if the normal brakes fail, the parking brake can be used to stop
your vehicle in an emergency. Since the parking brake applies only the
rear brakes, the vehicle's stopping distance will increase greatly and the
handling of your vehicle will be adversely affected.
Always set the parking brake fully and make sure that the
gearshift is securely latched in P (Park).
Your brake handle may need to be
pulled up slightly to release
pressure before pushing in the
button.
Push the button on the end of the
parking brake and push the handle
down as far as possible to release
the brake. Driving with the parking
brake on will cause the brakes to
wear out quickly and reduce fuel economy.
TRACTION CONTROLY(IF EQUIPPED)
The Traction Controlysystem helps maintain the stability and
steerability of your vehicle. It is especially useful on slippery and/or hilly
road surfaces. The system operates at all speeds by detecting and
P!
BRAKE
Driving
138

controlling wheel spin. The system borrows many of the electronic and
mechanical elements already present in the anti-lock braking system
(ABS).
Wheel-speed sensors allow excess rear wheel spin to be detected by the
Traction Controlyportion of the ABS computer. Any excessive wheel
spin is controlled by automatically applying and releasing the rear brakes
in conjunction with engine torque reductions. Engine torque reduction is
realized via the fully electronic spark and fuel injection systems. This
process is very sensitive to driving conditions and very fast acting. The
rear wheels ªsearchº for optimum traction several times a second and
adjustments are made accordingly.
The Traction Controlysystem will allow your vehicle to make better use
of available traction on slippery surfaces. The system is a driver aid
which makes your vehicle easier to handle primarily on snow and ice
covered roads. This is especially evident if wheel spin-up should occur
while turning.
During Traction Controlyoperation you may hear an electric motor type
of sound coming from the engine compartment and the engine will not
ªrev-upº when you push further on the accelerator. This is normal
system behavior.
If you should become stuck in snow
or on a very slippery road surface,
try switching the Traction Controly
system off using the traction control
switch located on the left-hand side
of the instrument panel. This may
allow excess wheel spin to ªdigº the
vehicle out or enable a successful
ªrockingº maneuver.
If the Traction Controlysystem is
cycled excessively, the brake portion
of the system will shut down to prevent the rear brakes from
overheating. A limited Traction Controlyfunction using only engine
torque reduction will still help control wheels from over-spinning. When
the rear brakes have cooled down, the system will again function
normally. Anti-lock braking is not affected by this condition and will
function normally during the cool down period.
OFF
TRAC
Driving
139

STEERING
Your vehicle is equipped with power steering. Power steering uses energy
from the engine to help steer the vehicle.
To prevent damage to the power steering pump:
²Never hold the steering wheel to the extreme right or the extreme left
for more than a few seconds when the engine is running.
²Do not operate the vehicle with a low power steering pump fluid level
(below the MIN mark on the reservoir).
If the power steering system breaks down (or if the engine is turned
off), you can steer the vehicle manually, but it takes more effort.
If the steering wanders or pulls, the condition could be caused by any of
the following:
²underinflated tire(s) on any wheel(s)
²uneven vehicle loading
²high crown in center of road
²high crosswinds
²wheels out of alignment
²loose or worn suspension components
Speed sensitive steering
The steering in your vehicle is speed sensitive. At high speeds, steering
assist will decrease to improve steering feel. At lower speeds,
maneuverability will be increased.
If the amount of effort required to steer your vehicle changes while
driving at a constant vehicle speed, have the power steering system
checked by your dealer or a qualified service technician.
AUTOMATIC TRANSMISSION OPERATION
Brake-shift interlock
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the RUN position unless brake pedal is depressed.
Driving
140

If you cannot move the gearshift lever out of P (Park) with ignition in
the RUN position and the brake pedal depressed:
1. Apply the parking brake, turn ignition key to LOCK, then remove the
key.
2. Insert the key and turn it to OFF. Apply the brake pedal and shift to N
(Neutral).This allows the automatic transmission shift lever to be
moved from the P (Park) position without the brake pedal
depressed.
3. Start the vehicle.
If it is necessary to use the above procedure to move the gearshift lever,
it is possible that a fuse has blown or the vehicle's brakelamps are not
operating properly. Refer toFuses and relaysin theRoadside
emergencieschapter.
Do not drive your vehicle until you verify that the brakelamps
are working.
If your vehicle gets stuck in mud or snow it may be rocked out by
shifting from forward and reverse gears, stopping between shifts, in a
steady pattern. Press lightly on the accelerator in each gear.
Do not rock the vehicle if the engine is not at normal operating
temperature or damage to the transmission may occur.
Do not rock the vehicle for more than a few minutes or damage to
the transmission and tires may occur or the engine may overheat.
Always set the parking brake fully and make sure the gearshift is
latched in P (Park). Turn off the ignition whenever you leave
your vehicle.
If the parking brake is fully released, but the brake warning lamp
remains illuminated, the brakes may not be working properly.
See your dealer or a qualified service technician.
Driving with a 5±speed automatic transmission
Your automatic transmission electronically controls the shift feel by using
an adaptive learning strategy. This feature is designed to increase
durability, and provide consistent shift feel over the life of the vehicle. It
is normal for a new transmission to shift firmly. This operation is
Driving
141

considered normal and will not affect function durability of the
transmission. Once the vehicle is at operating temperature it may take
several shifts at the same operating condition for the transmission to
properly adapt. Over time the adaptive learning process will fully update
transmission operation. The more varied the driving habits, speed and
torque, the longer it may take to adapt but the more complete the
process will be.
When the battery is disconnected or a new battery installed, the
transmission must learn its adaptive strategy. As a result of this, the
transmission may shift firmly. This operation is considered normal and
will fully update transmission operation to its optimum shift feel.
Understanding gearshift positions
Pull the gearshift lever towards you and downward to the desired gear.
The gearshift positions are displayed on the floor console next to the
gearshift lever and on the instrument cluster.
Hold the brake pedal down while you move the gearshift lever
from P (Park) to another position. If you do not hold the brake
pedal down, your vehicle may move unexpectedly and injure someone.
P (Park)
Always come to a complete stop
before shifting into P (Park). Make
sure the gearshift lever is securely
latched in P (Park). This position
locks the transmission and prevents
the rear wheels from turning.
Always set the parking
brake fully and make sure
the gearshift lever is latched in P
(Park). Turn off the ignition
whenever you leave your vehicle.
Driving
142

R (Reverse)
With the gearshift lever in R
(Reverse), the vehicle will move
backward. Always come to a
complete stop before shifting into
and out of R (Reverse).
N (Neutral)
With the gearshift lever in N
(Neutral), the vehicle can be started
and is free to roll. Hold the brake
pedal down while in this gear.
Driving
143

Drive 5 (Overdrive)
The normal driving position for the
best fuel economy. Transmission
operates in gears One through Five.
Drive 4 (Drive)
Transmission operates in gears One
through Four. Drive 4 (Drive)
provides engine braking in 4th gear
and is useful when:
²driving with a heavy load.
²towing a trailer up or down steep
hills.
²additional engine downhill
braking is desired. If towing a
trailer, refer toDriving while
you towin theTrailer Towing
section of this chapter.
Upshifts into Overdrive can be made
by shifting to D5. Selecting 4
(Drive) at higher speeds causes the
transmission to shift to 4th gear. Selecting D4 from lower speeds will
cause the transmission to upshift at the proper speed.
Driving
144