Alarm Problems
Thread Starter
Junior Member
Joined: Oct 2020
Posts: 8
Likes: 2
Alarm Problems
Hi all,
I have a 2010 F-150 XLT... it's paid for and has about 90K on it. It's starting to rust out and looks kinda ratty, but like I said... it's paid for, so I'd like to keep it. In the last week the theft alarm has been randomly activating. Unlocking the doors shuts it off. Today I noticed that as I was driving, the interior lights would randomly come on and go off by themselves. I don't think it's one of the door switches because the "Door Ajar" caution does not come on when the interior lights do. So, although I believe the lights and alarm are related, I think the problem is somewhere downstream of the door switches and not the switch itself, otherwise the Door Ajar warning would come on. Anyone seen this before? Any ideas? Does anyone know how to permanently disable the alarm system? As I said, it's pretty ratty and I'm not concerned with it being stolen, but I'd still like to be able to lock the doors. Any help would be greatly appreciated.
Just so you know, I'm a retired aircraft mechanic and well versed in electrical systems, so I'm up to speed in the dark arts of meters and such.
Thanks,
Jim.
I have a 2010 F-150 XLT... it's paid for and has about 90K on it. It's starting to rust out and looks kinda ratty, but like I said... it's paid for, so I'd like to keep it. In the last week the theft alarm has been randomly activating. Unlocking the doors shuts it off. Today I noticed that as I was driving, the interior lights would randomly come on and go off by themselves. I don't think it's one of the door switches because the "Door Ajar" caution does not come on when the interior lights do. So, although I believe the lights and alarm are related, I think the problem is somewhere downstream of the door switches and not the switch itself, otherwise the Door Ajar warning would come on. Anyone seen this before? Any ideas? Does anyone know how to permanently disable the alarm system? As I said, it's pretty ratty and I'm not concerned with it being stolen, but I'd still like to be able to lock the doors. Any help would be greatly appreciated.
Just so you know, I'm a retired aircraft mechanic and well versed in electrical systems, so I'm up to speed in the dark arts of meters and such.
Thanks,
Jim.
Last edited by JimD54; Oct 1, 2020 at 09:58 PM.
Thread Starter
Junior Member
Joined: Oct 2020
Posts: 8
Likes: 2
As far as I know it's OEM. Uses the factory key fob and has the red lock symbol built into the dash warning lights. The lock symbol comes on when you turn the key on and goes out a few seconds later.
Senior Member
Joined: Nov 2016
Posts: 728
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Could go looking with flashlight for pinched, damaged, or corroded wiring...... clean and reconnect all visible grounds etc. It's likely either wiring or a module.
If that yields nothing then I'd pay up for the Ford wiring diagrams. Then you can proceed with certainty.
I am aware of no "widespread" electrical issue with your vehicle that could cause your symptoms.
Good Luck!
If that yields nothing then I'd pay up for the Ford wiring diagrams. Then you can proceed with certainty.
I am aware of no "widespread" electrical issue with your vehicle that could cause your symptoms.
Good Luck!
Thread Starter
Junior Member
Joined: Oct 2020
Posts: 8
Likes: 2
Could go looking with flashlight for pinched, damaged, or corroded wiring...... clean and reconnect all visible grounds etc. It's likely either wiring or a module.
If that yields nothing then I'd pay up for the Ford wiring diagrams. Then you can proceed with certainty.
I am aware of no "widespread" electrical issue with your vehicle that could cause your symptoms.
Good Luck!
If that yields nothing then I'd pay up for the Ford wiring diagrams. Then you can proceed with certainty.
I am aware of no "widespread" electrical issue with your vehicle that could cause your symptoms.
Good Luck!
Thanks.
Senior Member
Joined: Nov 2016
Posts: 728
Likes: 276
Some kind folks sometimes will post images taken from their paid for copies.
Ford, and all other makers, charge $ for access to service and repair manuals.
This is what I had in mind:
https://www.motorcraftservice.com/Home/Pricing/7
You can printout what you need. ....72hr access. There are maybe 10,000 pages for every model yr.
Thread Starter
Junior Member
Joined: Oct 2020
Posts: 8
Likes: 2
NO!
Some kind folks sometimes will post images taken from their paid for copies.
Ford, and all other makers, charge $ for access to service and repair manuals.
This is what I had in mind:
https://www.motorcraftservice.com/Home/Pricing/7
You can printout what you need. ....72hr access. There are maybe 10,000 pages for every model yr.
Some kind folks sometimes will post images taken from their paid for copies.
Ford, and all other makers, charge $ for access to service and repair manuals.
This is what I had in mind:
https://www.motorcraftservice.com/Home/Pricing/7
You can printout what you need. ....72hr access. There are maybe 10,000 pages for every model yr.
