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Home Auto Clinic Can I Disable My Car’s Anti-Theft System?

Can I Disable My Car’s Anti-Theft System?


[dropcap]D[/dropcap]ear Editor,

My car is Honda Accord.  The car’s alarm constitutes a nuisance around my place of work. Even if simple wind blows on the car, it goes off. It is so loud, and it disturbs neighbours. I don’t think I really need it for now, as I live in a well secured environment. Please take me through procedure of disabling it.

Thank you most kind.

Sincerely yours,

Eugene Amos (Liberia)

[email protected]


Dear Eugene,

Thank you for your mail. I reckon that your car comes with an alarm system fitted by the Car’s maker, I mean factory fitted. If it is so, my quick answer is: “NO”.

Let’s look at it this way, assuming I am able to give you detailed procedure on this publication, I will end up lecturing not only millions of our readers out there, but also car thieves, who might stumble on the material.

For security reasons, therefore, I cannot publish procedure of disabling a car’s security system.

What to do

Your car alarm system is an anti-theft security system meant to prevent it from being stolen. So auto makers of cars that come with anti-theft security system make it extremely difficult, in most cases, impossible to disable or tamper with, unless by their accredited dealership service centre.

More so, there are different types of factory-fitted car anti-theft system. And they operate differently and for different purposes. For instance that of General Motors (GM), which is known as Content Theft Deterrent (CTD) is meant to prevent thieves from stealing whatever is kept in the car. Therefore, once the door is forced open or being attempted to be opened by force without the key, the alarm will go off. That type does not prevent car from being stolen.

Anti-theft system that prevents cars from being stolen does not only sound alarm, it cuts ignition and even fuel supply. Some are made in such a way that the car can be driven for certain distance, wne the ignition system and fuel supply will cut. There is no way the car will go beyond that point. Examples are Sentry Key Immobilizer System (SKIS) by Chrysler Ford’s Passive Anti-Theft System (PATS), and GM’s Vehicle Theft Deterrent (VTD).

Most use an ignition key that contains a coded transponder chip. The key is read by a transponder receiver in the ignition switch. The key signal is then routed through the anti-theft module or body control module (BCM) to the engine computer, which receives either a “go” or no go” signal.

If the PCM receives a no-go signal or no signal at all from the anti-theft system, the computer won’t enable the ignition, fuel system or starter (depending on how it is configured) so the engine won’t start when you turn the key.

For anti-theft security systems could be disabled easily, they are not worthy of the purpose for which they are designed, which is why auto manufacturers make it difficult for members of light-fingered fraternity or anyone for that matter to bypass.

If it is factory fitted, the best place to sort it out is authorized car dealers of your particular brand. They have trained personnel, who are able to use factory scanning equipment to diagnose the system, repair it or even disable it.

However, if your anti-theft system is fitted through independent auto security marketers, type known as after-market system, it can be resolved using the manual that comes with it. Even that, I advice you take it to the installer. For it takes long process and is complicated.

As usual, this is how we shall end this week’s illumination edition of Auto Clinic, served you from Motoring World International.

Thanks to those, who sent us commendation mails. Unfailingly, I shall serve you another interesting edition next week.

And as a reminder, should you experience any intractable motoring problem from your automobile, contact me by email for an explanation, solution or guide. Indicating the brand, model and manufacturing year of the vehicle. Please give me much explanation as you can about the problem.

And before you leave your home in the morning or embark on any long distance trip, check your tyres, ensuring there is no over-inflation or under-inflation. Also ensure you are not driving on expired tyres.

Be safety conscious.


Mail your questions to: [email protected]

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