Mercury Mariner (2008-2011) Fuse Diagram


Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercury Mariner and Mariner Hybrid (2008, 2009, 2010, 2011).

Mercury Mariner (2008-2011)

Checking and Replacing Fuses

Fuses and circuit breakers protect your vehicle’s electrical system from overloading. If electrical components in the vehicle are not working, the system may have been overloaded and blown a fuse or tripped a circuit breaker. Check the appropriate fuses before replacing any electrical components. A blown fuse can be identified by a break in the wire within the fuse.


  • Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
  • Always disconnect the battery before servicing high current fuses.
  • Do not repair fuses and never replace a blown fuse with one that has a higher amp rating. This can severe wire damage and could start a fire.
  • Never replace a broken fuse with anything other than a new fuse.
  • Even after a fuse is replaced, it will continue to blow if the cause of the overload is not identified and corrected. If the fuse continues to blow, have the vehicle’s electrical system checked by your dealer or a qualified service technician.

Passenger Compartment Fuse Box

The fuse panel is located on the right-hand side of the center console, by the instrument panel. Remove the panel cover to access the fuse cover. Press the tabs on the top and bottom of the fuse cover to remove.

Passenger Compartment Fuse Box Location

Passenger Compartment Fuse Box Diagram

AProtected components
130110V inverter
215Brake On/Off switch
3152009-2011: SYNC module
4302009-2011: Moon roof
510Keypad illumination, Brake Shift Interlock (BSI), Passenger compartment fuse panel
620Turn signals, Stop lamps
710Low beam headlamps (left)
810Low beam headlamps (right)
915Interior lights
1110Four wheel drive
127.5Power mirror switch
137.52008: Canister vent
1410FCIM (radio buttons), Satellite radio, Front display module, GPS module (2010-2011)
1510Climate control
1615Not used (spare)
1720All lock motor feeds, Liftgate release, Liftglass release
1820Heated seat
1925Rear wiper
2115Fog lamps
2215Park lamps
2315High beam headlamps
2420Horn relay
2510Demand lamps
2610Instrument panel cluster
2720Ignition switch
295Instrument panel cluster
3052008: Overdrive cancel
3110Restraints control module
32102010-2011: Rear video camera module
33102008: Speed control switch
3452008: Speed control deactivate switch, ABS
3510Four wheel drive, Electric power assist steering (EPAS), Park aid module, Active park assist module (2010-2011), 110V inverter module
365Passive anti-theft system (PATS) transceiver
3710Climate control
3820Subwoofer/Amp (audiophile radio / premium radio)
3920Radio, Radio amplifier (navigation only (2010-2011))
4020Front power point
4115Driver/passenger door lock switches, Automatic dimming mirror, Compass, Ambient lighting, Moon roof, Camera display in mirror
4210Not used (spare)
4310Rear wiper logic, Heated seats relay, Instrument cluster
4410Not used (spare)
455Front wiper logic, Blower motor relay
467.5Occupant classification system (OCS), Passenger airbag deactivation indicator (PADI)
4730Circuit Breaker: Power windows, Moon roof (2008)
48Delayed accessory


Engine Compartment Fuse Box

The power distribution box is located on the driver’s side of the engine compartment. The power distribution box contains high-current fuses that protect your vehicle’s main electrical systems from overloads.

Engine Compartment Fuse Box Location

Engine Compartment Fuse Box Diagram

AProtected components
A80Electronic power steering module (EPAS)
B125Passenger compartment fuse panel (SPDJB)
115Heated mirror
230Rear defroster
320Rear power point (center console)
4202008: Fuel pump (except Hybrid)
40Hybrid: Electric vacuum pump
510Powertrain Control Module (PCM) Keep Alive power, PCM relay (2009-2011), Canister vent (2009-2011), Transmission control module (Hybrid)
615except Hybrid: Alternator
7102008: Reverse lamps
152009-2011: Liftgate latch
820Trailer tow parking lamps
5Hybrid: Traction battery control module
950Anti-lock Brake System (ABS)
Hybrid: Brake control module
1030Front wipers
1130except Hybrid: Starter
1240Blower motor
1310A/C clutch
1415except Hybrid: Trailer tow turn lamps
10Hybrid: Heater/Coolant pump
1510Hybrid: Traction Battery Control Module (TBCM)
1640Cooling fan 1
1740Cooling fan 2
1820except Hybrid: ABS solenoid
50Hybrid: Brake control module solenoid
1930Power seats
22202009-2011: Fuel pump (except Hybrid)
15Hybrid: Ignition coils
23152009-2011: Fuel injectors (except Hybrid)
24102008: PCM transmission (except Hybrid)
Hybrid: Transmission control module
2552009-2011: Anti-lock Brake System (ABS) (except Hybrid)
Hybrid: Traction battery control module, Thermal expansion valve
26102008: PCM mil (except Hybrid)
152009-2011: Ignition coils (except Hybrid)
20Hybrid: Fuel pump, Traction battery control module
27102008: PCM non-mil
2009-2011: PCM – general powertrain components malfunction indicator lamp
28152008: PCM (except Hybrid)
Hybrid: Heated Exhaust Gas Oxygen (HEGO) sensor, PCM (mil-on — malfunction indicator lamp)
202009-2011: PCM – emission related powertrain components malfunction indicator lamp (except Hybrid)
29152008: Ignition coils
2009-2011: PCM
32Hybrid: A/C clutch diode
33PCM diode
34except Hybrid: Start diode
3510Reverse lamp relay, Speed control module (2008), Rear defrost relay, Run/start (2009-2011)
36Not used
37Not used
20A/C clutch
21ARear defroster
21B2009-2011: Fuel pump
Hybrid: Ignition
30Cooling fan 1
Hybrid: Electric vacuum pump mechanical
30CCooling fan main
30DCooling fan 2
31AReverse lamp
31B2008: Fuel pump
31Cexcept Hybrid: Trailer tow left turn
Hybrid: Heater pump
31Dexcept Hybrid: Trailer tow right turn
Hybrid: Coolant pump
31Eexcept Hybrid: Trailer tow park
31F2009-2011: Liftgate latch


Additional Relay Box (Hybrid)

Additional Relay Box

AProtected components
1Not used
2Not used
3Not used
45Vacuum pump monitor
5Not used
6Not used
R1Electric vacuum pump (solid state)