Where are the fuse boxes located?

  1. Passenger compartment fuse panel / power distribution box : The fuse panel is located under the right-hand side of the instrument panel.
  2. Engine Compartment Relay Box: The power distribution box is located in the engine compartment (left-side).

1. Passenger Compartment

2008 ford f 150 passenger compartment fuse box location

How to access fuse panel ?


Remove the trim panel and fuse box cover to access the fuses.

To remove the fuse box cover, place
a finger behind the PULL tab and
your thumb above the PULL tab as
shown in the illustration, then pull
the cover off.

2. Engine Compartment Fuse Box

2008 ford f 150 under hood relay box location

2008 Ford F 150 Fuse Box Diagram

Passenger Compartment Fuse Panel / Power Distribution Box

2008 Ford F 150 Passenger Compartment Fuse Box Diagram

2008 ford f 150 fuse panel diagram

2008 Ford F 150 Passenger Compartment Fuse Details

AmpsFuse Function
F0110 ARun/Accessory – Wipers, Instrument cluster, Audio for XL/STX
F0220 AStop/Turn lamps, Brake on/off switch
F035 APower mirrors, Memory logic power, Memory seats and pedals
F0410 ADVD battery power, Power fold mirror
F057.5 AKeep alive memory for Powertrain Control Module (PCM) and climate control module
F0615 AParklamps, BSM, Instrument panel illumination
F075 ARadio (start signal)
F0810 AHeated mirrors, Switch indicator
F0920 AFuel pump relay, Fuel injectors, Injector sense
F1020 ATrailer tow back-up lamps relay (PCB1), Trailer tow parklamp relay
F1110 AA/C clutch, 4×4 solenoid
F125 APCM relay coil
F1310 AClimate control module power, Flasher relay
F1410 ABack-up lamp and Daytime Running Lamps (DRL) relay coil, A/C pressure switch, Redundant speed control switch, Heated PCV (5.4L), ABS
F155 AOverdrive cancel, Cluster
F1610 ABrake-shift interlock solenoid
F1715 AFog lamp relay
F1810 AElectrochromatic mirror, Heated seats, BSM, Compass, RSS (Reverse Sensing System), Power rail
F1910 ARestraints (Air bag module)
F2015 APower rail
F2115 ACluster keep alive power
F2210 ADelayed accessory power for audio, power door lock switch and moonroof switch illumination
F2310 ARH low beam headlamp
F2415 ABattery saver power for demand lamps, Flex fuel
F2510 ALH low’ beam headlamp
F2620 AHorn
F275APassenger Air bag Deactivation (PAD) warning lamp, Cluster air bag warning lamp
F285ASecuriLock transceiver (PATS), PCM IGN monitor
F2915 APCM 4×4 power
F3015 APCM 4×4 power
F3120 ARadio power, Satellite radio module
F3215 AVapor Management Valve (VMV), A/C clutch relay, Canister vent, Heated Exhaust Gas Oxygen (HEGO) sensors 11 and #21, CMCV, Mass Air Flow
(MAF) sensor, VCT, Heated Positive Crankcase Ventilation (PCV) valve (4.2L engine), CID sensor (4.2L engine), 4.6L/4.2L EGR
F3315 AShift solenoid, CMS #12 and #22, Ignition coils
F3420 APCM power, IMRC (4.2L)
F3520 AInstrument cluster high beam indicator, High beam headlamps, DRL disable relay
F3610 ATrailer tow right turn/stop lamps
F3720 ARear power point
F3825 ASubwoofer power
F39Not used
F4020 ALow beam headlamps, DRL
F41Not used
F4210 ATrailer tow left turn/stop lamps
F10130AStarter solenoid
F10220AIgnition switch feed
F10320AABS valves
F104Not used
F10530AElectric trailer brakes
F10630ATrailer tow battery charge
F10730APower door locks (BSM)
F10830APassenger power seat
F10930ADriver power seat, Adjustable pedals
F11020ACigar lighter, Diagnostic connector power
F11130A4×4 motor relays
F11240AABS pump power
F11330AWipers and washer pump
F11440AHeated backlite, Heated mirror power
F11630ABlower motor
F11720AInstrument panel power point
F11830AHeated seats
40130A Circuit breakerPower windows, Moonroof, Power sliding backlite
R01Full ISO relayStarter solenoid
R02Full ISO relayAccessory delay
R03Full ISO relayHi-beam headlamps
R04Full ISO relayHeated backlite
R05Full ISO relayTrailer tow battery charge
R06Full ISO relayBlower motor
R201Half ISO relayTrailer tow park lamps
R202Half ISO relayFog lamps
R203Half ISO relayPCM
R301Printed circuit
R302Not used
R303Printed circuit
Fuel pump
R304Printed circuit
Battery saver
R305Printed circuit

2008 Ford F 150 Relay Box diagram under hood

2008 Ford F 150 Relay Box Diagram

With Daytime Running Lamp (DRL)
Without Daytime Running Lamp (DRL)

2008 Ford F 150 Relay Box Details

NoAmpsFuse Function
F035AClockspring illumination
R01Full ISO Relay4×4 CCW
R02Full ISO Relay4×4 CW
R031⁄2 ISO RelayDaytime Running Lamps (DRL) (if equipped, otherwise not used)
R202RelayA/C clutch
D01DiodeA/C clutch diode
D01DiodeOne Touch Integrated Start (OTIS)

WARNING: The terminal and harness assignments for individual connectors may vary depending on the vehicle’s equipment level, model, and market. It is recommended to refer to the fuse box diagram provided at the back of the fuse box cover for accurate information.

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