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Dodge Repair/'01 Durango: headlamps flash/horn sounds when starting

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Question
QUESTION: When i crank it up dash lights head lights and security light and horns sounds off .turn head lights on lights quiet flashing and horn still sound off

ANSWER: What is the year model?

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QUESTION: 2001 dodge Durango

Answer
Hi Donald,
Those sorts of behavior are similar to what happens when you attempt to open the vehicle which has a security system without first disarming it, or you try to start the engine in a vehicle that has a security system for the ignition switch (and the key should have a bulge in the handle that communicates with the security module to say your key is "OK"). Do you have such a security system and key? If so, then there is some sort of partial communication failure that is activating the alarms, but not preventing the engine from starting.
I would get a fault code readout using the data link connector socket under the dash to see if there is a fault code that tells us what is wrong. A nation-wide auto parts store, such as Autozone, will often do that for free, or an independent shop might charge you around $40. You could try turning the ignition switch: "on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the odometer window to see if the mileage reading is replaced by a 4-digit number preceded by a B or a P. But I suspect you will need to use the plug-in code reader to get a B code that speaks to this situation.
Let me know what you learn.
Please read the PS below and respond to it.
Thanks,
Roland

Dodge Repair

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Roland Finston

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Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question or asleep overnight so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top expert" from 2010-2015 here at AllExperts, and have answered 20,000+ questions.

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Five decades as a 'do-it-yourselfer' on domestic and imported cars

Organizations
Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Education/Credentials
Degrees in Physics/bruised knuckles.

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014, and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

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