Really REALLY strange backup sensor issue
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Laughing Gas
Joined: Nov 2014
Posts: 1,108
Likes: 23
Really REALLY strange backup sensor issue
No flames-I know there are a zillion threads about sensors but none covered this crap. The switch was lit and always off when I bought this one. I replaced the 4 sensors-no luck all though I could hear all 4 ticking. Next I replaced the speaker--ALMOST wa-lah. The 2 inner sensors work but the 2 outside sensors do not--or let me say they do not activate the system. I can hear ticks but no response. I know someone will say check connectors-which I will but honestly what are the odds the 2 outside sensors don't work and the 2 middle ones do. Is there a wiring pattern where they are linked in this fashion.
I swear I think this one was hit by lightning. The rear fan switch would not control speed--just stayed on. Replaced switch, replaced resistor-still one speed only and cannot turn off--so I unplugged the fan motor. I would not think the motor could be an issue=could it?
The overhead console did not work. Had to send it off to be repaired--to this point of 2 days it still works.
If anyone has any thoughts on the fan or backup system--Pee leeees
throw them out there. There is a ghost in the machine
I swear I think this one was hit by lightning. The rear fan switch would not control speed--just stayed on. Replaced switch, replaced resistor-still one speed only and cannot turn off--so I unplugged the fan motor. I would not think the motor could be an issue=could it?
The overhead console did not work. Had to send it off to be repaired--to this point of 2 days it still works.
If anyone has any thoughts on the fan or backup system--Pee leeees
throw them out there. There is a ghost in the machine
Senior User
Joined: Aug 2014
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The rear seat rear fan switch (on mine) only works if the front overhead rear fan switch is set to "rear"... which think is the first position.
On the backup sensors, are they snapped in all the way... not pushed back into the housing part way? The reason I ask is that if there's any actual system fault. the system is supposed to deactivate; so you should never have just two working.
If the sensors aren't snapped in, they might not be "aimed" properly?
On the backup sensors, are they snapped in all the way... not pushed back into the housing part way? The reason I ask is that if there's any actual system fault. the system is supposed to deactivate; so you should never have just two working.
If the sensors aren't snapped in, they might not be "aimed" properly?
Thread Starter
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Laughing Gas
Joined: Nov 2014
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Yeah I thought one item would shut it down as well but this one has been anything but normal. I don't have a control in front for rear air.This is an 05 aith automatic climate control. My 01 did have what you are describing.
I put the switch on and went back and put my hand in front of the sensors. if I stood to theside and placed my hand over either outside sensor--nothing, Moved over to inside sensors-worked just fine. I looked at the wiring diagram--this system should not be able to do what its doing. Ill pull the outside 2 tomorrow when the snow melts off of it in the garage.
Only thing I can figure is a partial connection where the system is grounded enough to not kick it off but not letting enough power through to completely activate the sensor. Geez I NEVER get anything routine!
4 X 4--everything inside is stock
I put the switch on and went back and put my hand in front of the sensors. if I stood to theside and placed my hand over either outside sensor--nothing, Moved over to inside sensors-worked just fine. I looked at the wiring diagram--this system should not be able to do what its doing. Ill pull the outside 2 tomorrow when the snow melts off of it in the garage.
Only thing I can figure is a partial connection where the system is grounded enough to not kick it off but not letting enough power through to completely activate the sensor. Geez I NEVER get anything routine!
4 X 4--everything inside is stock
Posting Guru
Joined: Aug 2013
Posts: 2,434
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From: Yakima, Wash.
I have pretty much the same issue with my back up sensors. An interesting thing happened with mine when i had the truck reprogrammed, all of the sudden the system started working once again. Then one day, it started freaking out while in reverse, and then nothing, back to the original issue of the two centers working and the two outer ones on the fritz.
While I would love to have the system working, I have pretty much given up on the dang thing!
Good luck with yours...
While I would love to have the system working, I have pretty much given up on the dang thing!
Good luck with yours...
Senior User
Joined: Aug 2014
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It would only take about 5 minutes to swap the backup sensors around and see if the "problem" goes with the sensors or stays with the wiring.
If you switch one inner with the other side outer, you should have one side working and one side not working if the two sensors are bad. It's a wiring or module problem it would stay the same.
If you switch one inner with the other side outer, you should have one side working and one side not working if the two sensors are bad. It's a wiring or module problem it would stay the same.
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From: Lone Jack , Mo
Backup sensor issue 05 X
I have watched and decided to participate the first time with my issue with the backup system . I removed my rear bumper , replaced the entire wiring harness , replaced the censors ( all new) , replaced the control box in the right rear side panel and I have only two sensors working. The far left and the right center work. I have switched sensors and still it is the same two that work. they all can be heard clicking. I have used my finger and scratched across the right sensor and it will beep a couple of times and then quit. The left center will not activate any. There is continuity from the center pin of each connector to the control box. Both control boxes respond the same way with the same 2 sensors working. I have downloaded a wiring diagram and It did not help.
Could this have not worked originally from the factory and where or who do I contact to help me troubleshoot this situation. thanks
I am very hardheaded about something like this not working!
Could this have not worked originally from the factory and where or who do I contact to help me troubleshoot this situation. thanks
I am very hardheaded about something like this not working!
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Thread Starter
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Laughing Gas
Joined: Nov 2014
Posts: 1,108
Likes: 23
Thanks
Thread Starter
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Laughing Gas
Joined: Nov 2014
Posts: 1,108
Likes: 23
I have watched and decided to participate the first time with my issue with the backup system . I removed my rear bumper , replaced the entire wiring harness , replaced the censors ( all new) , replaced the control box in the right rear side panel and I have only two sensors working. The far left and the right center work. I have switched sensors and still it is the same two that work. they all can be heard clicking. I have used my finger and scratched across the right sensor and it will beep a couple of times and then quit. The left center will not activate any. There is continuity from the center pin of each connector to the control box. Both control boxes respond the same way with the same 2 sensors working. I have downloaded a wiring diagram and It did not help.
Could this have not worked originally from the factory and where or who do I contact to help me troubleshoot this situation. thanks
I am very hardheaded about something like this not working!
Could this have not worked originally from the factory and where or who do I contact to help me troubleshoot this situation. thanks
I am very hardheaded about something like this not working!
New User
Joined: Dec 2014
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From: Lone Jack , Mo
It is just hard to believe when you replace everything it should work. I am tempted to take it to Ford and see if they can really fix it. It would be worht my sanity. thanks very much for the reply. Ed
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