HONDA – Anti-Theft/Engine Immobilizer Explanation, DIY Learning Tutorial

HONDA – Anti-Theft/Engine Immobilizer Explanation, DIY Learning Tutorial


Anti-theft systems are designed to prevent your vehicle from being stolen. 

The system “breaks” the flow of electricity to the engine start sequence when the vehicle detects that a key other than the correct one is attempting to start it.  Often, the system combines two critical components to keep the vehicle from being stolen.  1) The audible vehicle alarm Essentially, how they work is by an electrical circuit disconnecting to prevent power from flowing in some fashion so your car won’t start or to die immediately. An anti-theft system may also integrate a car alarm or it might be just an engine immobilizer.

1) The audible vehicle alarm and/or

2) An engine immobilizer.  Essentially, how they work is by an electrical circuit disconnecting to prevent power from flowing in some fashion so your car won’t start or to die immediately. An anti-theft system may also integrate a car alarm or it might be just an engine immobilizer.

If your anti theft / engine immobilizer fails then a possible solution may be found in replacing the vehicle battery.  If the battery dies then the key memory may have to be reset OR if the battery in the key remote dies.

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28 Comments on "HONDA – Anti-Theft/Engine Immobilizer Explanation, DIY Learning Tutorial"


  1. since 03? LOL ok since 98… Honda has put a chip in the black rubber like material on the keys in order for it to start your engine not since "2003"

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  2. You've been miss informed, honda uses transponder keys on honda as early as 1996 in UK, and 98 and up on usa.

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  3. Question: when auto insurance asks what anti-theft category this is…. what number would that be?

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  4. I have a 2003 Honda Civic and the key sign shows up and flashes twice for a few seconds then goes away is that normal?

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  5. immobilizers were implented in 1997 in the US for the Prelude. 1998 for Accords. Don't misinform people you lose credibility

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  6. please help me my key car was working great until I try programing the original key to make my lock button work now I cannot remove the alarm and my car wont start any advise or help you can provide me with please and thank you

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  7. hi. do you know anything about honda coupe 2008 that won't open it's door? I just lock it last night and when I checked it this morning, it won't open. The battery of the key is fine. The light is on. I am thinking maybe it's something to do with security lock. Thanks for any feedback.

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  8. Hello i have a 2005 Nissan 350z, when i put in the key, the car CRANKS but wont start, when i put in the key and try to start it, the NATS Alarm red light doesnt disappear..the red light stays ON.. After 20 attempts and 20 min unlocking the door, turning the key on and off the ignitation, etc, it will finaly recoginze the key and will start perfectly. On other days, the car will start perfectly and will disable the alarm all the time. On other days, i struggle trying to disable the alarm. What COULD this be?! Is it the Key or the NATS antenna amp , Body control module (BCM) or (IMMU) Engine Control Module (ECM??

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  9. Hello, I have an emergent question for the video publisher really. My car (grand cherokee 2004) was stolen inside, but the theft didn't take anything away from my car as there is nothing valuable there. I found this happened this monday as I noticed my car's door is ajar and pretty massed up inside. However, I didn't use my car since then, and today I want to drive for shopping and found it doesn't work. It looks like when I started it, it sound like "clicking", and no crank up. I am just not sure if it is the starter problem or the anti-theft programming problem. The car has enough battery and power. Thanks for any reply.

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  10. Hi, thats an really usefull video. I have a doubt, I bought a new key without a chip, because I already have one original chip but the key case broke. Well I put the chip in the new and plane key, I made it match with the car and now I can open the Doors and stuff with the remote. Me question is, ¿Will I be able to turn the engine on once the keymaster had copied the key shape from the original one? Sorry for my limited english

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  11. my wife's 09 fit just started to do this today 3/14/18. her original key was replaced about 2yrs ago. i am not sure if it was reprogrammed at the dealer at that time. i find it strange that it just now started to do this after so long.
    question is it the battery on the key fob or should i try the dealer first?

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  12. What if key ligh flashes twice goes away when I’m stopping and getting out of my car it does not stay lit up and I can turn car on as soon as light goes away

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  13. Do you know why the 2009 Honda fit sport factory alarm goes off at night when you use the key remote to set the car alarm on.

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  14. Call a Locksmith, or even better, an Automotive Locksmith. They do keys with transponders for less than dealers.

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  15. Anti-Theft my ass, it's just a way to keep people from getting replacement keys without going to an approved dealer and paying the royalty.
    You gotta understand the way car-companies think: with their wallets first, and the customers second.

    Reply

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