98 F150 Panic

[TJTF150]

I have an 98 F150 4x4 that randomly goes into panic mode, lights flashing, horn blowing. It's not the panic button being pushed. Sometimes as soon as I turn the ignition off it happens, sometimes it's when it's just sitting there unlocked. I haven't figured out a pattern. Just wondering if anyone has seen this problem. I pulled the horn relay out, to atleast quieten it.

Thanks

[pete54ford]

Maybe its telling you goodnight or goodmorning. Actually never heard of that happening. But the other day my 1990 started up all by itself, I have had the remote start in it for a year and a half, and the remote was inside the truck, so maybe I have the big brother to your truck!!!!

[RAH2001]

I too am having the same problem with my F150 alarm. It has been going on for 2 years now.

I have taken the truck into 3 different dealers hoping someone could find and fix the problem. No luck! Everyone says this is the first time they have ever seen this problem.

The problem has no rhyme or reason. It can be sitting in the garage for days without driving and at 6:30 A.M. it goes off or I can just arrive at my destination and shut off the truck and it goes off. And on a good day it may go a week with no problem.

I love my truck but man this is frustrating!!

[ponchonutty]

Originally Posted by RAH2001

I too am having the same problem with my F150 alarm. It has been going on for 2 years now.

I have taken the truck into 3 different dealers hoping someone could find and fix the problem. No luck! Everyone says this is the first time they have ever seen this problem.

The problem has no rhyme or reason. It can be sitting in the garage for days without driving and at 6:30 A.M. it goes off or I can just arrive at my destination and shut off the truck and it goes off. And on a good day it may go a week with no problem.

I love my truck but man this is frustrating!!

Yeah, I was wondering years ago if Ford would regret using Code Alarm as their source of keyless entry/alarm systems. I have now seen that they are promoting the FORD (CodeAlarm) remote start through the parts depo. When will they ever learn

Anyway, you will have to determin if it's actually the panic or alarm. You could permenately ground out the disarm wire. It is connected to the lock cyl. and uses a negative pulse to shut it off.

[RAH2001]

Do you have any more info on how I can ground out the disarm wire.

Thanks.

[ponchonutty]

Originally Posted by RAH2001

Do you have any more info on how I can ground out the disarm wire.

Thanks.

Yep. Look for a dk green/purple wire that is low in the driver's kick or in the doorjamb. If you ground it, it will disarm it.

[RAH2001]

No luck either I got the wrong wire or something else is wrong. I found a green wire w/prlp stipe, but the thing still does it.?

[ponchonutty]

Originally Posted by RAH2001

No luck either I got the wrong wire or something else is wrong. I found a green wire w/prlp stipe, but the thing still does it.?

Take your keyfob off your key chain and leave it in the house and see if you still have this problem.

[RAH2001]

I have new info. I found the Drk.grn/prpl wire and grounded it. This did disable the theft system. However this morning @ 7am the horn was sounding again. Is there anyway to bypass the panic system and still use the remote entry? Thanks for the help.

[ponchonutty]

Originally Posted by RAH2001

I have new info. I found the Drk.grn/prpl wire and grounded it. This did disable the theft system. However this morning @ 7am the horn was sounding again. Is there anyway to bypass the panic system and still use the remote entry? Thanks for the help.

nope. that's why I said to leave the keyfob well away from the vehicle.

[RAH2001]

I sure appreciate your help. I keep the truck in a detached garage 50' from the house. The keyfob (2) were in the house. My truck must be possesed!

[daddymack87]

I have a 1998 Ford F-150 also. The only problem with the truck started approx 2 years ago. The panic alarm goes off by itself at all hours of the day and night. The neighbors are about as frustrated as I am. The fob has nothing to do with it because the thing goes off when everyone is in bed. It also goes off sometimes when the key is just pulled out of the ignition

[Willore]

The problem I had for 2 years, before I disabled the horn on the anti-theft system, and the pattern seemed to be when there was rain or mildew in the mornings that the alarm would go off on it's own. Never figured out the cause of this, so cut the horn wire coming off the RAP (Remote Anti-Theft Personality) module. The RAP has to connectors goings to it C-256 and C-257. C-257 is the one that you need to cut DB wire going to pin #20 of the connector to disable the horn to the RAP. The horn will be unaffected at the steering wheel when doing this BTW. FYI- the RAP is by the brake pedal on the backside of the engine firewall.

[DavidGaley]

Originally Posted by Willore

The problem I had for 2 years, before I disabled the horn on the anti-theft system, and the pattern seemed to be when there was rain or mildew in the mornings that the alarm would go off on it's own. Never figured out the cause of this, so cut the horn wire coming off the RAP (Remote Anti-Theft Personality) module. The RAP has to connectors goings to it C-256 and C-257. C-257 is the one that you need to cut DB wire going to pin #20 of the connector to disable the horn to the RAP. The horn will be unaffected at the steering wheel when doing this BTW. FYI- the RAP is by the brake pedal on the backside of the engine firewall.

I have had the same annoying /embarrassing problem for about the same amount of time. I concluded that it had something to do with temperature changes. Only does it in spring and fall. Anyhow, does your remedy disable the other alarm functions (i.e. flashing lights etc.)?

[Willore]

The cutting of the 1 wire only disables the horn function of the anti-theft system. All other functions work.