Skip the auto shop - Our mechanics make house calls

Q: How do you arm and disarm the anti-theft system?

asked by on

How do you arm and disarm the anti-theft system?

A: While you have to take physical action to s...

While you have to take physical action to set the alarm on your car, the same is not true for the immobilizer system. The system is automatically armed as soon as you turn the engine off and take the key out of the ignition. You should see the immobilizer/anti-theft icon flash once every two seconds. The system also automatically disarms as soon as you insert a programmed key into the ignition and turn it to the on position. The chip in the key communicates with the car’s computer and the system disarms.

Tip

The anti-theft dash icon should light up for about three seconds after you crank the car. If it comes on and stays on, the system needs to be inspected.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you remove and reinstall head restraints?

Your car’s head restraints serve and important purpose in providing better comfort, but also in ensuring safety during an impact. Of course, there may come a time that you need to remove them (and reinstall them when you’re done). Here’s...

Q: What does the anti-lock Brake Light mean on the dash?

Your car is equipped with both a normal braking system, as well as anti-lock brakes. They’re not the same, and both have their own lights on the dash. The anti-lock Brake System (ABS) Light should come on in the dash...

Q: Pats system

If you do not have an extra programmed key to start the truck then you will need to have the dealer replace the ignition lock cylinder and program new keys. The other problem is you cannot lock or unlock doors...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.