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 manual
A/C only), A/C blower relay coil
3 10A EATC module
4 10A Ignition (ON) - Anti-lock Brake
System (ABS) module, Rear Air
Suspension Module (RASM),
Variable Assist Power Steering
(VAPS)
5 10A Speed control deactivation switch,
Stop signal
6 10A Ignition (ON) - Cluster
7 15A LCM (Park lamps, Corner lamps)
8 10A LCM
9 10A LCM (Switch illumination)
10 5A Ignition (START) - Audio mute
11 10A Ignition (ON/ACC) - window relay
coil
12 10A Ignition (START) - Starter relay
coil, DTRS
13 10A Ignition (ON/ACC) - Wiper
module
14 10A Ignition (ON) - BTSI (Floor-shift
transmission)
15 7.5A Ignition (ON/ACC) - LCM, Door
lock switch illumination, Heated
seat switch illumination,
Moonroof, Overhead console,
Electrochromatic mirror
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
189
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
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
223
•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 toLubricant specificationsin
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.
•Close windows for high speed driving.
EPA window sticker
Every new vehicle should have the EPA window sticker. Contact your
authorized dealer if the window sticker is not supplied with your vehicle.
The EPA window sticker should be your guide for the fuel economy
comparisons with other vehicles.
It is important to note the box in the lower left corner of the window
sticker. These numbers represent the Range of MPG (L/100 km)
expected on the vehicle under optimum conditions. Your fuel economy
may vary depending upon the method of operation and conditions.
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
244
For PCV valve replacement, see your authorized dealer. Refer to
scheduled maintenance informationfor the appropriate intervals for
changing the PCV valve.
Replace the PCV valve with one that meets Ford material and
design specifications for your vehicle, such as a Motorcraft or
equivalent replacement part. The customer warranty may be void
for any damage to the emissions system if such a PCV valve is not
used.
2For spark plug replacement, see your authorized dealer. Refer to
scheduled maintenance informationfor the appropriate intervals for
changing the spark plugs.
Replace the spark plugs with ones that meet Ford material and
design specifications for your vehicle, such as Motorcraft or
equivalent replacement parts. The customer warranty may be
void for any damage to the engine if such spark plugs are not
used.
REFILL CAPACITIES
Fluid Ford Part Name Capacity
Engine oil (includes
filter change)
6Motorcraft SAE 5W-20
Premium Synthetic
Blend Motor Oil (US)
Motorcraft SAE 5W-20
Super Premium Motor
Oil (Canada)6.0 quarts (5.7L)
Brake fluid Motorcraft High
Performance DOT 3
Motor Vehicle Brake
Fluid
1
Fill to line on reservoir
Power steering fluid Motorcraft MERCON
AT FFill to line on reservoir
Transmission fluid
(4R75E)
2Motorcraft
MERCONVATF13.9 quarts (13.2L)3
Engine coolant4Motorcraft Premium
Gold Engine Coolant
(yellow-colored)18.6 quarts (17.6L)
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
252
Fluid Ford Part Name Capacity
Fuel tank N/A 19.0 gallons (71.9L)
Rear axle lubricant
5Motorcraft SAE
80W-90 Premium Rear
Axle Lubricant5.0 pints (2.4L)7
Windshield washer
fluidMotorcraft Premium
Windshield Washer
ConcentrateFill to line on reservoir
1Use only brake fluids certified to meet Ford specifications. Refer to
Lubricant Specificationsin this chapter. DOT 3 fluid is recommended.
However, if DOT 3 is not available, DOT 4 fluid can be used.
2Ensure the correct automatic transmission fluid is used. MERCONand
MERCONV are not interchangeable. DO NOT MIX MERCONand
MERCONV. Refer to thescheduled maintenance informationto
determine the correct service interval.
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.
4Add the coolant type originally equipped in your vehicle.
5Rear axles are considered lubricated for life when the vehicle is used for
normal service. See yourscheduled maintenance informationfor
Severe Duty requirements.
6Use 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.
7Service refill capacities are determined by filling the rear axle 1/4 inch
to 9/16 inch (6 mm to 14 mm) below the bottom of the filler hole.
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
253
Item Ford part
nameFord part
numberFord
specification
Automatic
transmission
(4R75E)Motorcraft
MERCONV
AT F
3
XT-5-QM
MERCONV
Rear Axle
LubricantMotorcraft SAE
80W-90
Premium Rear
Axle Lubricant
2
XY-80W90-QL WSP-M2C197-A
Windshield
washer fluidMotorcraft
Premuim
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.
2Add 4 oz. (118 ml) of Additive Friction Modifier XL–3 or equivalent
meeting Ford specification EST-M2C118-A for complete refill of
Traction-Lok rear axles.
3Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick or on the dipstick
handle. MERCONand MERCONV are not interchangeable. DO NOT
mix MERCONand MERCONV. Refer to yourscheduled maintenance
informationto determine the correct service interval.
ENGINE DATA
Engine 4.6L V8 engine 4.6L FFV V8 engine
Cubic inches 281 281
Required fuel 87 octane 87 octane or Ethanol
(E 85)
Firing order 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8
Ignition system Coil on plug Coil on plug
Spark plug gap 0.052–0.056 inch
(1.32–1.42 mm)0.041–0.047 inch
(1.04–1.20 mm)
Compression ratio 9.4:1 9.4:1
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
255
wiper blades ............................217
Climate control (see Air
conditioning or Heating) ............37
Clock adjust
6-CD in dash .............................33
AM/FM .......................................18
AM/FM/Cassette ........................19
AM/FM/CD .................................23
AM/FM/Tape/CD .......................28
Compass, electronic
set zone adjustment .................55
Console ........................................53
overhead ..............................53, 55
Controls
power seat ...............................101
steering column ........................69
Coolant
checking and adding ..............230
refill capacities ................234, 252
specifications ..................254–255
Cruise control
(see Speed control) ....................66
Cupholder(s) .............................104
Customer Assistance ................184
Ford Extended Service
Plan ..........................................211
Getting assistance outside the
U.S. and Canada .....................212
Getting roadside assistance ...184
Getting the service you
need .........................................207
Ordering additional owner’s
literature .................................212
Utilizing the
Mediation/Arbitration
Program ...................................210D
Daytime running lamps
(see Lamps) ................................41
Defrost
rear window ..............................39
Dipstick
automatic transmission
fluid ..........................................248
engine oil .................................225
Doors
lubricant specifications ..........254
Driving under special
conditions ..................................183
through water .........................183
E
Electronic message center .........74
Emergencies, roadside
jump-starting ..........................201
Emission control system ..........245
Engine ................................255–256
cleaning ...................................216
coolant .....................................230
fail-safe cooling .......................235
idle speed control ...................228
lubrication
specifications ..................254–255
refill capacities ........................252
service points ..........................223
starting after a collision .........186
Engine block heater .................171
Engine oil ..................................225
change oil soon warning,
message center .......................225
checking and adding ..............225
dipstick ....................................225
filter, specifications ........227, 251
2006 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
262