2010 Mercury Mountaineer fuses

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
21 — Not used
22 15A Brake switch, Bi-color stop lamps,
High-mount brake lamp, All turn
lamps
23 15A Interior lamps, Puddle lamps,
Battery saver, Instrument
illumination, Homelink
24 10A Cluster, Theft indicator light
25 15A Trailer tow park lamps
26 15A License plate/rear park lamp,
Front park lamps, Manual climate
27 15A Tri-color stop lamps
28 10A Climate controls
CB1 25A Windows
The following relays are located on either side of the passenger
compartment fuse panel. See your authorized dealer for service of these
relays.
Fuse/Relay Location Description
Relay 1 Delayed accessory relay
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.
WARNING:Always disconnect the battery before servicing high
current fuses.
WARNING:To reduce risk of electrical shock, always replace
the cover to the Power Distribution Box before reconnecting the
battery or refilling fluid reservoirs.
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
Roadside Emergencies
298
2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 50A** Battery feed 2 (passenger
compartment fuse panel)
2 50A** Battery feed 3 (passenger
compartment fuse panel)
3 50A** Battery feed 1 (passenger
compartment fuse panel)
4 30A** Fuel pump, Injectors
5 30A** Third row seat (left)
6 40A** Anti-lock brake system (ABS) pump
7 40A** Powertrain control module (PCM)
8 — Not used
9 — Not used
10 30A** Power seat (right)
11 30A** Starter
12 30A** Third row seat (right)
Roadside Emergencies
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
40 15A* Fan clutch, Positive crackcase
ventilation (PCV) valve, A/C clutch
relay
41 15A* Satellite radio module, DVD, SYNC
42 15A* Redundant brake switch, Electronic
vapor management valve, Mass air
flow sensor, Heated exhaust gas
oxygen (HEGO) sensor, EVR,
Variable cam timing (VCT)1 (4.6L
engine only), VCT2 (4.6L engine
only), CMCV (4.6L engine only),
Catalyst monitor sensor
43 15A* Coil on plug (4.6L engine only), Coil
tower (4.0L engine only)
44 15A* Injectors
45B — Not used
45A — Not used
46B — Not used
46A — Not used
49 — Fuel pump relay
50B — A/C clutch relay
50A — Fog lamps relay
51 — Not used
52 — Not used
53 — One touch integrated start (OTIS)
(diode)
54 — Trailer battery charger relay
55B — Front wiper relay
55A — PCM relay
56B — Starter relay
56A — Blower relay
* Mini Fuses ** Cartridge Fuses
Roadside Emergencies
301
2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

idle speed control ...................346
lubrication specifications .......371
refill capacities ........................371
service points ..................337–338
starting after a collision .........294
Engine block heater .................265
Engine oil ..................................341
checking and adding ..............341
dipstick ....................................341
filter, specifications ........344, 370
recommendations ...................344
refill capacities ........................371
specifications ..........................371
Event data recording ....................7
Exhaust fumes ..........................264
F
Fail safe cooling ........................353
Family entertainment system ....56
Fluid capacities .........................371
Fog lamps ....................................97
Four-Wheel Drive vehicles
driving off road .......................285
preparing to drive your
vehicle .....................................275
Fuel ............................................354
calculating fuel
economy ............................21, 360
cap ...........................................356
capacity ...................................371
choosing the right fuel ...........357
comparisons with EPA fuel
economy estimates .................363
detergent in fuel .....................358
filler funnel .............................359
filling your vehicle with
fuel ...........................354, 356, 360
filter, specifications ........354, 370fuel pump shut-off switch .....294
improving fuel economy ........360
octane rating ...................358, 376
quality ......................................358
running out of fuel .........312, 359
safety information relating to
automotive fuels .....................354
Fuses ..................................295–296
G
Garage door opener ..........111, 124
Gas cap (see Fuel cap) ............356
Gas mileage (see Fuel
economy) ...................................360
Gauges .........................................17
GAWR (Gross Axle Weight
Rating)
calculating ...............................253
GVWR (Gross Vehicle Weight
Rating)
calculating ...............................253
H
Hazard flashers .........................293
Headlamps ...................................96
aiming ........................................98
bulb specifications ..................101
daytime running lights .............97
flash to pass ..............................98
high beam .................................97
turning on and off ....................96
Heating
heating and air conditioning
system .................................89, 91
Homelink wireless control
system ........................................125
Hood ..........................................336
Index
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

O
Octane rating ............................358
Oil (see Engine oil) ..................341
P
Parking brake ............................267
Parts (see Motorcraft parts) ....370
Passenger Occupant
Classification Sensor .................176
Pedals (see Power adjustable
foot pedals) ...............................117
Power adjustable foot pedals ...117
Power deployable running
boards ........................................117
Power distribution box
(see Fuses) ...............................298
Power door locks ......................141
Power mirrors ...........................116
Power point ...............................112
Power steering ..........................274
fluid, checking and adding ....366
fluid, refill capacity ................371
fluid, specifications .................371
Power Windows .........................113
Preparing to drive your
vehicle ........................................275
R
Radio ................................28, 32, 40
Rear seat entertainment
system ..........................................56
Rear window defroster ...............95Recommendations for
attaching safety restraints for
children ......................................207
Relays ........................................295
Remote entry system .......146–147
illuminated entry ....................151
locking/unlocking
doors ................................147–148
panic alarm .............................148
replacing the batteries ...........149
Reverse sensing system ...........282
Roadside assistance ..................292
Roof rack ...................................139
S
Safety belts (see Safety
restraints) ..................175, 178–183
Safety Canopy ...........199, 201–202
Safety defects, reporting ..........326
Safety restraints ........175, 178–183
Belt-Minder...........................185
extension assembly ................184
for adults .........................179–182
for children .............................205
Occupant Classification
Sensor ......................................176
warning light and chime ........185
Safety restraints - LATCH
anchors ......................................213
Safety seats for children ..........209
Safety Compliance
Certification Label ....................377
Satellite Radio Information ........53
Seats ..........................................157
child safety seats ....................209
easy access/easyout feature ..164
front seats ...............................160
Index
388
2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)