recently bout a 04 f150. been lookin around for things and ran across this site and have been hooked since. on the 04, next to the cig lighter there is a switch, i cant find out what it is for. help please?

 

do you have back up sensors? the button beside mine is to turn the sensors off.

 

If it is a triangle with a P on it it is for backup sensors.

 

Welcome to the site!

 

as far as i know i dont have a back up sensor. but maybe it is. ill try it.

 

The back up sensor is located in the bumper, I think. Two round plugs on each side.

 

See the sensors in those pictures?

 

What do backup sensors do? I have had three trucks and have never had those?

 

They beep as you get closer to an object.

 

REVERSE SENSING SYSTEM (IF EQUIPPED)
The Reverse Sensing System (RSS) sounds a tone to warn the driver of obstacles near the rear bumper when the R (Reverse) is selected and the vehicle is moving at speeds less than 3 mph (5 km/h). The system is not effective at speeds above 3 mph (5 km/h) and may not detect certain angular or moving objects.

The RSS detects obstacles up to 6 feet (2 meters.) from the rear bumper with a decreased coverage area at the outer corners of the bumper, (refer to the figures for approximate zone coverage areas). As you move closer to the obstacle, the rate of the tone increases. When the obstacle is less than 10 inches (25.0 cm) away, the tone will sound continuously. If the RSS detects a stationary or receding object further than 10 inches (25.0 cm) from the side of the vehicle, the tone will sound for only three seconds. Once the system detects an object approaching, the tone will sound again. The RSS may have reduced performance or an increased chance of false detection if the tailgate is not locked and in the upright position. If the tailgate is down, the RSS tone may be heard intermittently or continuously. The tone may also be heard if items in the truck bed protrude rearward outside the bed.

The RSS automatically turns on when the gearshift lever is placed in R (Reverse) and the ignition is ON. An RSS control allows the driver to turn the RSS on and off. To turn the RSS off, the ignition must be ON, and the gear selector in R (Reverse). An indicator light on the control will illuminate when the system is turned off. If the indicator light illuminates when the RSS is not turned off, it may indicate a failure in the RSS. The RSS will remain off until either the RSS control is pushed again or the ignition switch is recycled. Keep the RSS sensors (located on the rear bumper/fascia) free from snow, ice and large accumulations of dirt (do not clean the sensors with sharp objects). If the sensors are covered, it will affect the accuracy of the RSS. If your vehicle sustains damage to the rear bumper/fascia, leaving it misaligned or bent, the sensing zone may be altered causing inaccurate measurement of obstacles or false alarms.

PP 162-164
http://www.motorcraftservice.com/pub.../04f12og5e.pdf

 

i can tell u exactly what they do.

when your in reverse and hauling an object they constantly beep to **** the hell outta you until you press the button.

 

ah ok... I just use my mirrors

 

Do you have a pic of the switch? On my truck I put a switch there that looks like it belongs there to control my driving lights.

 

tryin to put pics up but i gotta learn how. but its definately not back up sensors... there is a switch on the left side of the gig lighter that turns red if i flip it to the right... dont know what it does

 

sounds like the previous owner mustve had other lights on the truck... they just left an empty switch for ya