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View Full Version : 2017 F150 alarm goes off (only in the middle of the night, of course)



1BAD92LX
07-28-2020, 12:50 PM
Any body else's truck do this? If it was a Honda I'd unplug the hood switch, will do it anyway and see if it stops.

Scrape
07-28-2020, 01:34 PM
https://www.f150forum.com/f118/alarm-keeps-going-off-without-good-reason-410471/

Darkhorse
08-02-2020, 06:48 PM
Even in the honda the hood switch not guaranteed to work, had to pull the horn relay. A lot of these alarm systems are hard to disable later in life, tied to too many other things in the fuse panel.

Spock
08-03-2020, 07:32 PM
If you have a scan tool that can see BCM Pids, there are 4 pids, ALR EVT1-4 (alarm event 1-4) that tell you what set off the alarm the last 4 times

1BAD92LX
08-03-2020, 10:24 PM
I disconnected the battery after the last time it went off. Would it store that info still?
I don’t have a scanner unfortunately.

Chinga
08-06-2020, 10:02 AM
I have had the same issue in my 2019 F150. The alarm has gone off a number of times and usually at night to wake others up. I end up getting up to click the remote but not before I have woken up several neighbours. The good news is I don't give a shit if I wake them up in the middle of the night, they routinely wake me up with their barking dogs at 5:45 - 6:30am on weekends.

Spock
08-06-2020, 05:41 PM
no , disconnecting the battery would clear the data
If it happens again I would find someone with a scan tool
Guessing can get very expensive

1BAD92LX
08-07-2020, 04:08 PM
Yes I have, no obvious door handle or lock damage.
I was thinking this started after we went camping, had the doors open and didn’t drive much for 4 days.
Never had to boost it, but lights were on more than normal. Could low battery voltage do it?
The drive home was about 1 hr, should have been charged up.