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97 f150 lariat 4x4 supercab 5.4 auto. The alarm goes off randomly when doors locked by remote or door switch. not consistent, went off 4 times one day, couple days later went off again. Has not gone off three days now by locking doors manually. maybe coincidence? has only gone off in daytime knock on wood! changed batteries in remotes. Every time I think I solved it goes off. any help or ideas much appreciated
will try to get pic. Its about 2" long 1" wide ford logo on front, lock upper left unlock upper right, panic middle red button. Its longer than wife's 99 expeditions about same width. door jamb says 3/97
That sure looks like a factory-style keyless-entry remote.
When you say "the alarm goes off," what (exactly) happens?. Horn honk and light flash? Is there a siren? If there's a siren, it is most likely a dealer-installed "Ford accessory" alarm system. These were made by CodeAlarm. Those remotes, though, if I remember correctly, look different.
horn and lights no siren. I have manually locked doors (pushed button down, shut doors) since the weekend alarm has not gone off? Last week I locked doors using button on driver door couple mins later alarm went off as well?
Well, the factory anti-theft system is designed to sense when a door us opened either without a key unlock or fob unlock after they've been locked electrically. You could have a wire shorting, or the module could be going bad. Look up under the dash, driver's side. Do you see a box that looks like this one? (It's abut 4" by 5" if I remember correctly.)
Also, after turning off the vehicle, but before locking the doors, do you see a "THEFT" light flashing in the dash?
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Last edited by OhioLariat; 12-14-2017 at 11:05 AM.
12-11-2017, 07:00 PM
alarm issues
