Page 177 of 256

If your vehicle is equipped with a
floor-shift transmission, overdrive
can be deactivated by pressing the
transmission control switch on the
gearshift handle.
The transmission control indicator light (TCIL) will illuminate on the
instrument cluster.
•Standard instrument cluster
•Optional instrument cluster
Drive (not shown)
Drive is activated when the transmission control switch is pressed.
•This position allows for all forward gears except overdrive.
•O/D OFF lamp is illuminated.
•Provides engine braking.
•Use when driving conditions cause excessive shifting from O/D to
other gears. Examples: city traffic, hilly terrain, heavy loads, trailer
towing and when engine braking is required.
•To return to O/D (overdrive mode), press the transmission control
switch. The O/D OFF lamp will not be illuminated.
•O/D (Overdrive) is automatically returned each time the key is turned
off.
O/D
OFF
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
km
MILES
/GAL
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
177
Page 178 of 256

2 (Second)
This position allows for second gear only.
•Provides engine braking.
•Use to start-up on slippery roads.
•To return to
(Overdrive), move the gearshift lever into the
(Overdrive) position.
•Selecting 2 (Second) at higher speeds will cause the transmission to
downshift to second gear at the appropriate vehicle speed.
1 (First)
•Provides maximum engine braking.
•Allows upshifts by moving gearshift lever.
•Will not downshift into 1 (First) at high speeds; allows for 1 (First)
when vehicle reaches slower speeds.
Forced downshifts
•Allowed in
(Overdrive) or Drive.
•Depress the accelerator to the floor.
•Allows transmission to select an appropriate gear.
If your vehicle gets stuck in mud or snow
If your vehicle gets stuck in mud or snow, it may be rocked out by
shifting between 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 minute or damage to the
transmission and tires may occur, or the engine may overheat.
TRACTION-LOKAXLE (IF EQUIPPED)
This axle provides added traction on slippery surfaces, particularly when
one wheel is on a poor traction surface. Under normal conditions, the
Traction-Lokaxle functions like a standard rear axle.
Extended use of other than the manufacturer’s specified size tires on a
Traction-Lokrear axle could result in a permanent reduction in
effectiveness. This loss of effectiveness does not affect normal driving
and should not be noticeable to the driver.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
178
Page 179 of 256

DRIVING THROUGH WATER
Do not drive quickly through standing water, especially if the depth is
unknown. Traction or brake capability may be limited and if the ignition
system gets wet, your engine may stall. Water may also enter your
engine’s air intake and severely damage your engine.
If driving through deep or standing water is unavoidable, proceed very
slowly. Never drive through water that is higher than the bottom of the
hubs (for trucks) or the bottom of the wheel rims (for cars).
Once through the water, always try the brakes. Wet brakes do not stop
the vehicle as effectively as dry brakes. Drying can be improved by
moving your vehicle slowly while applying light pressure on the brake
pedal.
Driving through deep water where the transmission vent tube is
submerged may allow water into the transmission and cause
internal transmission damage. Have the fluid checked and, if
water is found, replace the fluid.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
179
Page 181 of 256

Canadian customers who require roadside assistance, call
1–800–665–2006.
If you need to arrange roadside assistance for yourself, Ford Motor
Company will reimburse a reasonable amount. To obtain reimbursement
information, U.S. Ford or Mercury vehicles customers call
1-800-241-3673; Lincoln vehicle customers call 1–800–521–4140.
Canadian customers who need to obtain reimbursement information, call
1–800–665–2006.
ROADSIDE COVERAGE BEYOND BASIC WARRANTY
In the United States, you may purchase additional roadside assistance
coverage beyond this period through the Ford Auto Club by contacting
your Ford or Lincoln Mercury dealer.
Similarly in Canada, for uninterrupted Roadside Assistance coverage, you
may purchase extended coverage prior to your Basic Warranty’s Roadside
Assistance expiring. For more information and enrollment, contact
1–877–294–2582 or visit our website at www.ford.ca.
HAZARD FLASHER
Use only in an emergency to warn traffic of vehicle breakdown,
approaching danger, etc. The hazard flashers can be operated when the
ignition is off.
•The hazard lights control is
located on top of the steering
column.
•Depress hazard lights control to
activate all hazard flashers
simultaneously.
•Depress control again to turn the
flashers off.
FUEL PUMP SHUT-OFF SWITCH
FUEL
RESET
The fuel pump shut-off switch is a device intended to stop the electric
fuel pump when your vehicle has been involved in a substantial jolt.
After a collision, if the engine cranks but does not start, the fuel pump
shut-off switch may have been activated.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
181
Page 182 of 256
The fuel pump shut-off switch is
located on the left side of the trunk
behind the left rear tail light and the
trunk liner.
Use the following procedure to reset the fuel pump shut-off switch.
1. Turn the ignition to the OFF position.
2. Check the fuel system for leaks.
3. If no fuel leak is apparent, reset the fuel pump shut-off switch by
pushing in on the reset button.
4. Turn the ignition to the ON position. Pause for a few seconds and
return the key to the OFF position.
5. Make a further check for leaks in the fuel system.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
15
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
182
Page 184 of 256
The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 15A Cluster, Lighting Control Module
(Interior Lighting)
2 10A Ignition (ON) - Electronic
Automatic Temperature Control
(EATC) module, A/C mode switch
(vehicles equipped with EATC)
3 10A EATC module
4 10A Ignition (ON) - Anti-lock Brake
System (ABS) module, Positive
Crankcase Ventilation (PCV)
5 10A Speed control deactivation switch,
Stop signal, Brake-Transmission
Shift Interlock (BTSI)
(column-shift transmission)
6 10A Ignition (ON) - Cluster
7 10A LCM (Park lamps, Switch
illumination)
27 25
26 2423 21
2219
20
18 16
17 1514 12
1310
33
31
2932
30
28 11
97
8653
41
2Relay
1
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
184
Page 186 of 256

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
23 15A Multi-function switch
(Flash-to-pass)
24 10A Ignition (ON/ACC) - Passive
Anti-Theft System (PATS)
module, Powertrain Control
Module (PCM) relay coil, Fuel
relay coil, Ignition coil relay coil
25 10A Autolamp/Sunload sensor, Power
mirrors, Door lock switches
(DDM), Adjustable pedal switch
26 10A Ignition (ON/ACC) - Analog
cluster, Warning lamp module,
LCM, Overdrive cancel switch,
Rear defroster relay coil
27 20A Cigar lighter, OBD II, Power point
28 10A Center High-Mounted Stop Lamp
(CHMSL)
29 15A Audio
30 15A Stop lamps, MFS
31 15A Hazards
32 10A Mirror heaters, Rear defroster
switch indicator
33 — Not used
Relay 1 Full ISO relay Rear defroster
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
Always disconnect the battery before servicing high current
fuses.
To reduce risk of electrical shock, always replace the cover to
the Power Distribution Box before reconnecting the battery or
refilling fluid reservoirs.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
186
Page 191 of 256
Connecting the jumper cables
1. Connect the positive (+) jumper cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
2. Connect the other end of the positive (+) cable to the positive (+)
terminal of the assisting battery.
+–+–
+–+–
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
191