Skip the auto shop - Our mechanics make house calls

Q: How does the immobilizer system work?

asked by on

How does the immobilizer system work?

A: The immobilizer system is a standard featur...

The immobilizer system is a standard feature on all Civics, and it provides important safety and theft protection for your vehicle. Here’s how it works:

  1. The system ensures that the car will not start unless a programmed master key or the programmed valet key is used in the ignition.

  2. The green immobilizer key symbol in the dash, when illuminated with the key in the run position, means there is a fault with the key or the immobilizer system.


  • Never leave your key in the ignition. If a programmed key is left in the car, anyone can use it and the car will operate normally.

  • If your master key or valet key will not start the car, it will need to be reprogrammed.

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・Save up to 30%

Get a quote

What others are asking

Q: How do you adjust the steering wheel on?

It’s important to be able to adjust the steering wheel to get the ideal driving position for you. Your car’s steering wheel can adjust in four different ways: up and down, as well as in and out. Here’s how to...

Q: What do the turn signal lights mean?

The turn signal lights located in your instrument cluster are connected to the same circuit that your turn signal lights are on for both the front and rear of your car. When your have the turn signal engaged, it will...

Q: What does the vehicle stability assist (VSA) Warning Light mean?

The vehicle stability assist (VSA) Warning Light is located on the instrument panel. When the light illuminates, then there is either a problem with the VSA system, or with the hill start assist, and the vehicle should be inspected. Tip...

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 Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...