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Ignition Interlock Device 101: You Asked, We Answered

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Ignition Interlock Device 101: You Asked, We Answered


If you’ve been convicted of a DUI, the court may mandate that an ignition interlock device be installed in your vehicle. So what is an ignition interlock device, and how will it affect your lifestyle? We developed your 101 guide.

If you’ve been charged with a DUI, don’t panic. Call our award-winning Reno DUI lawyer today: (775) 502-1575.

What is an ignition interlock device?
An ignition interlock device, or an IID, is an alcohol-recognition device that is installed in the ignition system of a vehicle. Designed to prevent someone from driving while intoxicated, the device requires drivers to blow alcohol-free breath into the device in order for their vehicle to start.

The IID also issues information to the DMV regarding the driver’s behavior. For example, in cases where the IID detects alcohol, the DMV will be alerted of the number of attempts made to start the vehicle while intoxicated. Many IIDs also require “rolling retests,” or additional breathing tests after the car remains running for a period of time. The device informs the driver to stop driving and alerts the DMV of the test failure.

Some states require IIDs when reinstating the license of an offender, whereas other states reserve the device for second- or third-time offenders. Many states leave the designation of these devices to the judge presiding over the DUI case.

How long will I be required to have an IID in my car?
The court determines this at the time the ignition interlock device is issued, and the length of issuance depends on the severity of the offense. If you are a first-time DUI offender, the court may require the IID for six months, whereas a third-time DUI offender may be required to use an IID for multiple years.

How much does an IID cost?
A variety of costs are connected to the IID, including:

  • Installment fee – The cost of installing the device ranges between $50 and $150, depending on the vehicle and the location of the IID within the car.
  • Monthly maintenance fee – A monthly fee is applied to the offender for maintenance, upkeep, and monitoring. This typically ranges from $50 to $150 depending on the IID provider. Many states offer financial aid programs for IIDs, and some IID providers offer payment plans.
  • Removal fee – It costs money to remove an IID system from a vehicle! The removal typically costs the same as the installation: between $50 and $150.

Can I get rid of my IID?
The court determines how long the IID must remain installed in your vehicle. Removing an IID early, or tampering with it to disrupt its functionality, can have serious consequences, including the suspension of your driver’s license and/or criminal charges.

If you have been accused of a DUI, contact our award-winning attorney at the Law Offices of Kenneth A. Stover for a free consultation: (775) 502-1575.

Our Reno DUI lawyer has over 15 years of experience. Awarded the Client Distinction Award by Martindale-Hubbell®, we always prioritize our clients and take the time to build a solid defensive strategy on behalf of those we represent. Contact the Law Offices of Kenneth A. Stover today to get started.

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