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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Old 03-29-2012, 06:50 PM
Marty's 97 F-150 Marty's 97 F-150 is offline
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05 F150 Backup Sensor Wiring Question

I bought this 05 Lariat 3 weeks ago and have narrowed my to fix list down to the back up sensors. Have been searching and searching and can't find an identical problem that someone else has had. I went out tonight and turned on key and put truck in reverse and put my ear to the sensors and found 3 of them clicking/snapping away. The switch has always turned to off as soon as the truck is put in reverse. The out board sensor on drivers side was silent. Figured it was an easy swap of putting in a new sensor and problem solved. My neighbor has the same truck so I took a known working sensor out of his and put it in mine. Still silent but now the dash alarm makes a beep sound as soon as the truck is put in reverse and then the light illuminates "off" again. Went around back with truck in reverse and it was still silent when I put my ear next to it. Swapped it with the one directly beside it that was ticking/snapping and it was still silent in the outboard driver location. I guess now to trace wires?? Is there a known trouble spot for bad wires on these? Are all the sensors individually wired to the front or are they all spliced together at the back? The wire from the outboard sensor goes toward the sensor directly beside it but it was getting dark and I couldn't see if it was spliced in to it. Any help or guidance would be greatly appreciated
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Old 03-29-2012, 10:54 PM
Coskid Coskid is offline
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Man i don't think I have heard of a problem area on the rear sensors before. My guess is yours has a break someplace like you think so have fun tracking the wires. I am not certain but I believe they splice somewhere towards the back.

Good luck!
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Old 03-30-2012, 11:24 AM
hcbph hcbph is offline
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Backup Monitors

I had some intermittent issues with mine while still under warranty. I was told there is a connector by the tranny for the backup sensors that can become corroded and cause issues. Sorry, haven't looked at them myself so that's about all the info I have.
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Old 03-30-2012, 11:24 AM
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