Back-up Sensors not working on 2004 E...

Back-up Sensors not working on 2004 Explorer

Posted in the Ford Explorer Forum

Glenn

Pasadena, MD

#1 Jul 29, 2011
The backup sensor stopped working and the switch on the dashboard appears to be in the off position when shifting into reverse with the gear selector on the column. The tranmission is an automatic. When the transmission is in any gear other then reverse I can turn the backup sensor on and off with the switch on the dash but as soon as I move the gear shift selector into reverse the backup switch goes into the off position and the light come on showing it is off. Ocassionally I get an intermittent beep as if it was working properly while in reverse and when it does beep for that fraction of a second I notice the light on the switch goes out only during that beep them come back on immediately until it beeps again.
Does anyone know the cause, it seems like it is coming from the switch or wiring in the dash or steering column.
Thanks for any reply.
shane

Vancouver, Canada

#2 Feb 14, 2012
having same problem need an ansewer as well
scottso

Spring Valley, NY

#3 Mar 10, 2013
I know this post is a bit old, but for anyone else experiencing this problem it was a pretty simple fix. After some online research, most indicated that the problem was likely a bad sensor. I ordered two off of ebay for 25 bucks each. Pulled the rear bumper assemly apart and started by swapping out the right inner sensor. Turned the key on and put into reverse and the dash switched turned off as always. Put back the original sensor and swapped the outer right sensor and again put the car into reverse. This time the system stayed active and emitted a steady tone as expected since the bumper was laying on the ground. Hung the bumper back into position and decided to test everything one moretime before putting back together and lucky I did. Tested all sensors by walking across the aback of the car and moving my hand slowly toward each sensor. Found all were working except the left outer that was unresponsive. Pulled bumper back off and replaced this sensor as well and retested to ensure all four were working. SO ultimatelly I had two bad sensors, one that disabled the system and the other simply didn't respond. Everything back together nd working perfectly. Good luck with your replacements.
Ted

Bridgeville, PA

#4 Nov 18, 2013
scottso wrote:
I know this post is a bit old, but for anyone else experiencing this problem it was a pretty simple fix. After some online research, most indicated that the problem was likely a bad sensor. I ordered two off of ebay for 25 bucks each. Pulled the rear bumper assemly apart and started by swapping out the right inner sensor. Turned the key on and put into reverse and the dash switched turned off as always. Put back the original sensor and swapped the outer right sensor and again put the car into reverse. This time the system stayed active and emitted a steady tone as expected since the bumper was laying on the ground. Hung the bumper back into position and decided to test everything one moretime before putting back together and lucky I did. Tested all sensors by walking across the aback of the car and moving my hand slowly toward each sensor. Found all were working except the left outer that was unresponsive. Pulled bumper back off and replaced this sensor as well and retested to ensure all four were working. SO ultimatelly I had two bad sensors, one that disabled the system and the other simply didn't respond. Everything back together nd working perfectly. Good luck with your replacements.
I have a 2004 Ford Explorer Eddie Bauer and have this same problem. Is there a easier way to replace the sensor other than taking the bumper off. It looks like you can access the sensors buy pulling off the black plastic step cover that sits on top of the bumper. There looks like 2 plastic plugs one on each end of the step that you can pop off and access the sensors. The sensors are mounted on a thin molding that attaches to the bumper. Can that be removed to access the sensors? Thanks.
Cory

Ottawa, Canada

#5 Mar 2, 2015
Ted wrote:
<quoted text>
I have a 2004 Ford Explorer Eddie Bauer and have this same problem. Is there a easier way to replace the sensor other than taking the bumper off. It looks like you can access the sensors buy pulling off the black plastic step cover that sits on top of the bumper. There looks like 2 plastic plugs one on each end of the step that you can pop off and access the sensors. The sensors are mounted on a thin molding that attaches to the bumper. Can that be removed to access the sensors? Thanks.
No you can not.... you have to remove the tail lights (2 screws on the side of inner hatch) then remove bolts that are angled where the tail lights were removed, remove all black tabs along top of bumper and there is also a hidden screw under the bumper on each side of the outer edge of the bumper you have to look under the truck.7mm bolt. After you get the cover off there is 3 bolts holding the foam inside the plastic cover you have to remove them when you do you will see the sensors. Lift the two plastic tabs gently and push sensors into the bumper to remove. Good luck in your adventure just remember to look under the truck for the hidden bolts !! Also after removing the 2 screws from the tail lights you will find it hard to pull them out but dont be scared just pull on it slowly towards the back of the truck you will have resistance because of a metal push pin holding in the center of the tail light.
Mike

Canton, MA

#6 Sep 26, 2015
Yes you can remove just the plate that the sensors are mounted to then each sensor individually
Terry

Columbia, SC

#7 Oct 8, 2017
I have a 2003 ford explorer eddie beauer, I change out all of the rear sensors on the bumper, and I can hear the clicking when i put my ear to it, but light on the inside of my truck park assit is still on, I need help to solve this problem

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