Auxiliary Relay Box - Ford 2008 F-150 Owner's Manual

Roadside Emergencies

Auxiliary relay box

The relay box is located in the engine compartment on the left fender.
With Daytime Running Lamp (DRL) or 4x4 options
Without Daytime Running Lamp (DRL) and 4x4 options
The relays are coded as follows:
Fuse/Relay Fuse Amp
Location Rating
F03 5A
R01 Full ISO Relay
R02 Full ISO Relay
R03 1 ⁄ ISO Relay
2
R201 Relay
R202 Relay
D01 Diode
D02 Diode
306
2008 F-150
Owners Guide (post-2002-fmt)
USA
Description
Clockspring illumination
4x4 CCW
4x4 CW
Daytime Running Lamps (DRL) high
beam disable
DRL
A/C clutch
A/C clutch
One Touch Integrated Start (OTIS)