2009 Mercury Mountaineer Owner's Manuals

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
5 5A Moonroof, Door lock switch
illumination, Rearview mirror with
microphone
6 20A Liftglass release motor, Door
unlock/lock
7 15A Trailer stop/turn
8 15A Ignition switch power, PATS,
Cluster
9 2A 6R TCM/PCM (Ignition
RUN/START), Fuel pump relay
10 5A Front wiper RUN/ACC relay in
PDB
11 5A Radio start
12 5A Rear wiper motor RUN/ACC,
Trailer battery charge relay in
PDB, Radio
13 15A Heated mirror, Manual climate
rear defrost indicator
14 20A Horn
15 10A Reverse lamps
16 10A Trailer reverse lamps
17 10A RCM (restraints), Passenger
occupancy
18 10A Reverse park aid, IVD switch,
IVD, AWD module, Heated seat
switches, Compass,
Electrochromatic mirror, AUX
climate control
19 — Not used
20 10A Manual climate, DEATC, Brake
shift
21 — Not used
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
22 15A Brake switch, Bi-color stop lamps,
CHMSL, All turn lamps
23 15A Interior lamps, Puddle lamps,
Battery saver, Instrument
illumination, Homelink
24 10A Cluster, Theft LED
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 Manual/DEATC
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
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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.
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The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 50A** BATT 2 (SJB)
2 50A** BATT 3 (SJB)
3 50A** BATT 1 (SJB)
4 30A** Fuel pump, Injectors
5 30A** Third row seat (left)
6 40A** 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)
13 30A** Trailer tow battery charger
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
14 30A** Memory seats (DSM)
40A** Non-memory seats
15 40A** Rear defrost, Heated mirrors
16 40A** Front blower motor
17 30A** Trailer electronic brakes
18 30A** Auxiliary blower motor
19 30A** Running boards
20 30A** Front wiper motor
21 20A* Rear power point
22 20A* Subwoofer
23 — Not used
24 10A* Powertrain Control Module
(PCM) Keep Alive Power,
Canister vent
25 20A* Front power point/Cigar lighter
26 20A* AWD module (4.6L engine only)
27 20A* 6R Transmission module (4.6L
engine only)
28 20A* Heated seats
29 15A* Headlamps (right)
30 25A* Rear wiper
31 15A* Fog lamps
32 5A* Power mirrors
33 30A* ABS valve
34 15A* Headlamps (left)
35 10A* AC clutch
36 20A* Console bin power point
37 30A* Driver window motor
38 15A* 5R Transmission (4.0L engine
only)
39 15A* PCM power
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
40 15A* Fan clutch, PCV valve, AC clutch
relay, GCC fan
41 15A* SDARS, DVD, SYNC
42 15A* Redundant brake switch, EVMV,
MAFS, HEGO, EVR, VCT1 (4.6L
engine only), VCT2 (4.6L engine
only), CMCV (4.6L engine only),
CMS
43 15A* Coil on plug (4.6L engine only),
Coil tower (4.0L engine only)
44 15A* Injectors
45B — GCC fan relay
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
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CHANGING THE TIRES
If you get a flat tire while driving:
•do not brake heavily.
•gradually decrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowly move to a safe place on the side of the road.
Note:The tire pressure monitoring system (TPMS) indicator light will
illuminate when the spare is in use. To restore the full functionality of
the monitoring system, all road wheels equipped with tire pressure
monitoring sensors must be mounted on the vehicle.
Have a flat serviced by an authorized dealer in order to prevent damage
to the TPMS sensor, refer toChanging tires with TPMSin theTires,
Wheels and Loadingchapter. Replace the spare tire with a road tire as
soon as possible.
WARNING:The use of tire sealants may damage your Tire
Pressure Monitoring System and should not be used.
WARNING:Refer toTire Pressure Monitoring System (TPMS)
in theTires, Wheels and Loadingchapter for important
information. If the tire pressure monitor sensor becomes damaged, it
will no longer function.
Dissimilar spare tire/wheel information
WARNING:Failure to follow these guidelines could result in an
increased risk of loss of vehicle control, injury or death.
Note:Turn off the power running boards (if equipped) before driving
with a dissimilar spare tire/wheel. Refer toRunning boardsin the
Driver Controlschapter.
If you have a dissimilar spare tire/wheel, then it is intended for
temporary use only. This means that if you need to use it, you should
replace it as soon as possible with a road tire/wheel that is the same size
and type as the road tires and wheels that were originally provided by
Ford. If the dissimilar spare tire or wheel is damaged, it should be
replaced rather than repaired.
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A dissimilar spare tire/wheel is defined as a spare tire and/or wheel that
is different in brand, size or appearance from the road tires and wheels
and can be one of three types:
1.T-type mini-spare:This spare tire begins with the letter “T” for tire
size and may have “Temporary Use Only” molded in the sidewall
2.Full-size dissimilar spare with label on wheel:This spare tire has
a label on the wheel that states: “THIS TIRE AND WHEEL FOR
TEMPORARY USE ONLY”
When driving with one of the dissimilar spare tires listed above,do not:
•Exceed 50 mph (80 km/h)
•Load the vehicle beyond maximum vehicle load rating listed on the
Safety Compliance Label
•Tow a trailer
•Use snow chains on the end of the vehicle with the dissimilar spare
tire
•Use more than one dissimilar spare tire at a time
•Use commercial car washing equipment
•Try to repair the dissimilar spare tire
Use of one of the dissimilar spare tires listed above at any one wheel
location can lead to impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
•Winter weather driving capability
•Wet weather driving capability
3.Full-size dissimilar spare without label on wheel
When driving with the full-size dissimilar spare tire/wheel,do not:
•Exceed 70 mph (113 km/h)
•Use more than one dissimilar spare tire/wheel at a time
•Use commercial car washing equipment
•Use snow chains on the end of the vehicle with the dissimilar spare
tire/wheel
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