2004 FORD THUNDERBIRD service interval

When the engine is cold, check the
level of the engine coolant in the
reservoir.
•The engine coolant should be at the “cold fill level ”or within the “cold
fill range ”as listed on the engine coolant reservoir (depending upon
application).
• Refer to the Scheduled Maintenance Guide for service interval
schedules.
• Be sure to read and understand Precautions when servicing your
vehicle in this chapter.
If the engine coolant has not been checked at the recommended interval,
the engine coolant reservoir may become low or empty. If the reservoir is
low or empty, add engine coolant to the reservoir. Refer to Adding
engine coolant in this chapter.
Note: Automotive fluids are not interchangeable; do not use engine
coolant, antifreeze or windshield washer fluid outside of its specified
function and vehicle location.
Adding engine coolant
When adding coolant, make sure it is a 50/50 mixture of engine coolant
and distilled water. Add the mixture to the coolant reservoir, when the
engine is cool , until the appropriate fill level is obtained.
COLD FILL
LEVEL
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
171

with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of“Premium ”
unleaded gasoline. If the problems persist, see your dealer or a qualified
service technician.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
Many of the world ’s automakers approved the World-wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-wide Fuel Charter.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning ”gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
• You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
• Your “Check Engine ”indicator may come on. For more information on
the “Check Engine ”indicator, refer to the Instrument Cluster
chapter.
Fuel Filter
For fuel filter replacement, see your dealer or a qualified service
technician. Refer to the scheduled maintenance guide for the appropriate
intervals for changing the fuel filter.
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
179

If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a “not ready for I/M test ”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
• First, at least 10 minutes of driving on an expressway or highway.
• Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
POWER STEERING FLUID
Refer to the scheduled maintenance guide for the service interval
schedules. If adding fluid is necessary, use only MERCON AT F.
1. Start the engine and let it run
until it reaches normal operating
temperature (the engine coolant
temperature gauge indicator will be
near the center of the normal area
between H and C).
2. While the engine idles, turn the
steering wheel left and right several
times.
3. Turn the engine off.
4. Check the fluid level in the
reservoir. It should be between the
MIN and MAX lines. Do not add
fluid if the level is in this range.
5. If the fluid is low, add fluid in
small amounts, continuously
checking the level until it reaches
the range between the MIN and
MAX lines. Be sure to put the cap
back on the reservoir.
M AX
M I
N
M AX
M IN
2004 Thunderbird
(tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
185

BRAKE FLUID RESERVOIR
The fluid level will drop slowly as
the brakes wear, and will rise when
the brake components are replaced.
Fluid levels between the“MIN ”and
“ MAX ”lines are within the normal
operating range, there is no need to
add fluid. If the fluid levels are
outside of the normal operating range, the performance of your brake
system could be compromised, seek service from your dealer
immediately.
TRANSMISSION FLUID
Checking automatic transmission fluid
The 5R55S transmission does not have a transmission fluid dipstick.
Refer to your scheduled maintenance guide for scheduled intervals for
fluid checks and changes. Your transmission does not consume fluid.
However, the fluid level should be checked if the transmission is not
working properly, i.e., if the transmission slips or shifts slowly or if you
notice some sign of fluid leakage.
Transmission fluid should be checked and, if required, fluid
should be added by a qualified technician.
Before adding any fluid, make sure the correct type is used. Use only
MERCON V automatic transmission fluid. The type of fluid used is
indicated on the transmission fluid pan, extension housing and also in
the Lubricant specifications section in this chapter.
Use of a non-approved automatic transmission fluid may cause
internal transmission component damage and void the warranty.
Do not use supplemental transmission fluid additives, treatments or
cleaning agents. The use of these materials may affect transmission
operation and result in damage to internal transmission components.
AIR FILTER MAINTENANCE
Refer to the scheduled maintenance guide for the appropriate intervals
for changing the air filter element.
When changing the air filter element, use only the Motorcraft air filter
element listed. Refer to Motorcraft Part Numbers .
Note: Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
MAX
MIN
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
186

6. Visually inspect the tires to make sure there are no nails or other
objects embedded that could poke a hole in the tire and cause an air
leak.
7. Check the sidewalls to make sure there are no gouges, cuts, bulges or
other irregularities.
Tire and wheel alignment
A bad jolt from hitting a curb or pothole can cause the front end of your
vehicle to become misaligned or damage to your tires. If your vehicle
seems to pull to one side, vibrate or shake when you’re driving, the
wheels may be out of alignment. Have a qualified technician at a
reputable repair facility check the wheel alignment periodically.
Wheel misalignment in the front or the rear can cause uneven and rapid
treadwear of your tires and should be corrected by a qualified technician
at a reputable repair facility. Front wheel drive (FWD) vehicles, and
those with independent front suspension require alignment of all four
wheels.
The tire should also be balanced periodically. An unbalanced tire and
wheel assembly may result in irregular tire wear.
Tire rotation
Rotating your tires at the recommended interval (as indicated in the
Service Maintenance Guide that comes with your vehicle) will help your
tires wear more evenly providing better tire performance and longer tire
life. Unless otherwise specified, rotate the tires approximately every
8,000 km (5,000 miles).
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
197

Fluid Ford PartNameApplication Capacity
Engine coolant
2Motorcraft
Premium Gold
Engine Coolant
(yellow-colored) 3.9L-4V V8
engine
11.3L (11.9
quarts)
Power steering
fluid Motorcraft
MERCON
AT F All Fill to MAX line
on reservoir
Rear axle
3Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant All 1.2
–1.3L
(2.5 –2.7 pints)
Fuel tank N/A All 68.2L (18.0 gallons)
Transmission
fluid
4Motorcraft
MERCON V
AT F Automatic
(5R55S)
11.2L (11.9
quarts)5
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateAll Fill to line on
reservoir
1Use only brake fluids certified to meet Ford specifications. Refer to
Lubricant Specifications in this chapter. DOT 3 fluid is recommended.
However, if DOT 3 is not available, DOT 4 fluid can be used.
2Add the coolant type originally equipped in your vehicle.3Your vehicle ’s rear axle is filled with a synthetic rear axle lubricant and
is considered lubricated for life. These lubricants do not need to be
checked or changed unless a leak is suspected, service is required or the
axle assembly has been submerged in water. The axle lubricant should
be changed any time the rear axle has been submerged in water. Fill 6
mm to 14 mm (1/4 inch to 9/16 inch) below bottom of fill hole.
4Ensure the correct automatic transmission fluid is used. MERCON and
MERCON V are not interchangeable. DO NOT MIX MERCON and
MERCON V. Refer to the scheduled maintenance guide to determine
the correct service interval.
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
202

Item Ford partnameFord part
number Ford
specification
Lock cylinders Motorcraft Penetrating and
Lock LubricantXL-1 none
Power steering
fluid Motorcraft
MERCON
AT F XT-2-QDX MERCON

Rear Axle
Lubricant Motorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant
2
XY-75W90-QFEHP
Automatic
transmission
fluid Motorcraft
MERCON
V
AT F
3
XT-5-QM MERCON V
Windshield
washer fluid Motorcraft
Premium
Windshield
Washer
ConcentrateZC-32-A WSB-M8B16
–A2
1Use only brake fluids certified to meet Ford specifications. DOT 3 fluid
is recommended. However, if DOT 3 is not available, DOT 4 fluid can be
used.
2Ford design rear axles contain a synthetic lubricant that does not
require changing unless the axle has been submerged in water.
3Ensure the correct automatic transmission fluid is used. MERCON and
MERCON V are not interchangeable. DO NOT MIX MERCON and
MERCON V. Refer to the scheduled maintenance guide to determine
the correct service interval.
2004 Thunderbird (tbr)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
204