Page 197 of 280

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
17 10A Ignition (ON) - A/C mode switch
(vehicles equipped with manual A/C),
Blend door, Heated seat modules, BTSI
(Floor-shift transmission)
18 15A Lighting control module (interior
lighting)
19 10A LCM (Left-hand low beam)
20 10A Ignition (ON/START) - Back-up lamps
21 10A LCM (Right-hand low beam)
22 10A Ignition (ON/START) - Restraint Control
Module (RCM), Occupant Classification
Sensor (OCS), Passenger Air bag
Deactivation Indicator (PADI)
23 15A Multi-function switch (Flash-to-pass),
LCM (High beams)
24 10A Ignition (ON/START) - Passive
Anti-Theft System (PATS) module,
Powertrain Control Module (PCM) relay
coil, Fuel relay coil, Ignition coil relay
coil
25 15A LCM (Park lamps, corner lamps, license
lamps)
26 10A Ignition (ON/START) - Cluster, LCM,
Overdrive cancel switch
27 — Not used
28 7.5A Brake signal, LCM (BTSI), ABS
29 — Not used
30 — Not used
31 5A Key in (LCM)
32 — Not used
33 — Not used
Relay 1 Full ISO relay Window relay
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
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Page 232 of 280
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
4.6L SOHC V8 engine
1. Brake fluid reservoir
2. Engine oil dipstick
3. Windshield washer fluid reservoir
4. Air filter assembly
5. Power steering fluid reservoir
6. Engine coolant reservoir
7. Battery
8. Power distribution box
9. Engine oil filler cap
10. Automatic transmission fluid dipstick
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
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Page 254 of 280
![Mercury Grand Marquis 2008 Owners Manuals •Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using th Mercury Grand Marquis 2008 Owners Manuals •Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using th](/manual-img/33/10910/w960_10910-253.png)
•Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between the top gears occurs. Unnecessary
shifting of this type could result in reduced fuel economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
8–10 miles (12–16 km) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
254
Page 264 of 280

Item Capacity Ford part nameFord part number /
Ford specification
Hinges, latches, striker
plates, fuel filler door
hinge and seat tracks— Multi-Purpose GreaseXG-4 or XL-5 /
ESB-M1C93-B
Lock cylinders —Motorcraft Penetrating
and Lock LubricantXL-1 /
None
Power steering fluidFill to line on
reservoirMotorcraft MERCONV
AT FXT-5-QM /
MERCONV
Automatic transmission
fluid (4R75E)13.9 quarts
(13.2L)
3
Motorcraft MERCONV
AT F
4
XT-5-QM /
MERCONV
Rear axle fluid
5
5.0 pints (2.4L)
6
Motorcraft SAE 80W-90
Premium Rear Axle
LubricantXY-80W90-QL /
WSP-M2C197-A
Windshield washer fluidFill to line on
reservoirMotorcraft Premium
Windshield Washer
ConcentrateZC-32-A /
WSB-M8B16-A2
Fuel Tank19.0 gallons
(71.9L)——
1Add the coolant type originally equipped in your vehicle.2Use of synthetic or synthetic blend motor oil is not mandatory. Engine oil need only meet the
requirements of Ford specification WSS-M2C930-A and the API Certification mark.3Indicates only approximate dry-fill capacity. Some applications may vary based on cooler size and
if equipped with an in-tank cooler. The amount of transmission fluid and fluid level should be set
by the indication on the dipstick’s normal operating range.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
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plastic parts ............................226
washing ....................................223
waxing .....................................224
wheels ......................................224
wiper blades ............................226
Climate control (see Air
conditioning or Heating) ............35
Clock adjust
6-CD in dash .............................31
AM/FM .......................................19
AM/FM/CD .................................22
AM/FM/Tape/CD .......................26
Compass, electronic
set zone adjustment .................54
Console ........................................52
overhead ..............................52–53
Controls
power seat ...............................102
steering column ........................68
Coolant
checking and adding ..............239
refill capacities ................243, 263
specifications ..........................263
Cruise control
(see Speed control) ....................65
Cupholder(s) .............................105
Customer Assistance ................191
Ford Extended Service
Plan ..........................................219
Getting assistance outside the
U.S. and Canada .....................220
Getting roadside assistance ...191
Getting the service
you need .................................215
Ordering additional owner’s
literature .................................221
Utilizing the
Mediation/Arbitration
Program ...................................219D
Daytime running lamps
(see Lamps) ................................39
Defrost
rear window ..............................37
Dipstick
automatic transmission
fluid ..........................................259
engine oil .................................234
Driving under special
conditions ..................................189
through water .........................190
E
Electronic message center .........74
Emergencies, roadside
jump-starting ..........................208
Emission control system ..........255
Engine ........................................266
cleaning ...................................225
coolant .....................................239
fail-safe cooling .......................244
idle speed control ...................237
lubrication specifications .......263
refill capacities ........................263
service points ..........................232
starting after a collision .........193
Engine block heater .................177
Engine oil ..................................234
change oil soon warning,
message center .......................234
checking and adding ..............234
dipstick ....................................234
filter, specifications ........236, 262
recommendations ...................236
refill capacities ........................263
specifications ..........................263
Event data recording ....................6
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
272