Question about 2001 Ford F250 Super Duty Super Cab

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When interior lights go off on my 1999 F-250 super duty, the factory alarm is activated blowing the horn . How do you stop/fix this?

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1 Answer

Horn Blows non stop until it dies and then stops working 2006 F 250


Sounds like a short some place. Electrical, intermittent problems are hard to detect. Process of elimination.

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Yes, you need to find the positive wire to the side light circuit, from the alarm and try splicing into it, and then to the horn circuit.
You need to be sure that this wire doesn't also become positive when the side lights are switched manually though.

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2005 Ford F250 Disel horn starts blowing for no reason. It will stop when the truck is started. We do not know if the vehicle is capable of remote or not. How do we correct the horn problem and how do we...


there is an aftermarket alarm installed. pull the fuses and it will solve your problem. the vehicle should be capable of having remmotes if it has power locks

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Have Ford 250 Super Duty replaced battery and now when I reattached negative and positive cables the horn blows and does not stop and it wont start



Welcome to FixYa.com


Check the horn button or relay.






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Kind Regards, Lee

Your FixYa Expert and Master Technician

Feb 04, 2011 | 2006 Ford F-250 Super Duty

2 Answers

Lights and horn stay on for a couple of minutes


Does it go off ocationally while you are using you turn signals?
Check you multifuntion switch, if it is shorting out it can send power to you horn from when your interior lights is activated. Hope this helps

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I have a 1999 ford f350 ford 4x4 7.3 the horn starts blowing


there is a short in the horn wiring, you may disconnect the horn relay, that the easiet thing to do. owners manual should have a layout of where the relay is. Steering wheel switches most likely.

Sep 24, 2009 | 2000 Ford F350 Super Duty Super Cab

1 Answer

1999 F350 horn blows all on its own...


I think your horn relay is making contact from behind your horn buttons on your steering wheel. Usually as time creeps up the insulation that is placed on the positive lead for the horn gets worn out from constant horn action. If it is worn down the horn is touching a ground and completing the circuit and thus making the horn sound. I would start with that first before getting more technical. Let me know. Gabe

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1 Answer

Door ajar light on


The drivers side door switch goes bad all the time on those, try replacing or check if its sticking.the small little button int the door jam.

Feb 01, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

How can I reset my Factory Alarm on my Jeep it wont run


Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

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