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If you have been convicted of a DUI, you may be ordered to get an ignition interlock device installed in your car. This can mean even more stress and hassle than a court case. You might be wondering how much the ignition interlock device costs, how to get it installed, and how it works. You may even be thinking about how to get around ignition interlock devices. Here are some thoughts to help keep it simple:

  1. The cost of the ignition interlock device is the driver’s responsibility. The cost varies by state, but the typical costs, according to DrivingLaws published by NOLO, are $50-150 for installation, $50-150 for monitoring and maintenance, and $50-150 for removal. This might be expensive, but it is generally cheaper than not being able to drive at all. You may be able to get assistance from the state with the cost.
  2. You should not try to tamper with or disconnect the ignition interlock device in your car. Doing so can result in damage to the device or your vehicle. You should not try to trick the device by having a sober passenger do the test, as the interlock will do periodic tests and this looks suspicious.
  3. In some cases, you may face other restrictions on your driving. Circumventing these can cause you to lose your license altogether.
  4. Some things can cause the device to give a false positive. Alcohol-based mouthwash is the most common. Our latest ignition interlock device, the Interlock 7000 can easily differentiate between breath alcohol and mouth alcohol.
  5. Ignition interlocks can be installed on any vehicle with a 12-volt electrical system. It generally takes one to three hours. Calibration is every month or every other month, and the device will lock out if not taken in for calibration. If you buy a new car, you must get the interlock device transferred before you take possession.
  6. As the ignition interlock breath test has to be done by all users of the vehicle, you should bring any other drivers to the installation appointment so they can be taught how to operate the device. Bear in mind that if somebody else fails a test, unless the device has a camera, you may be held responsible.

An ignition interlock is generally offered to offenders as an alternative to losing the ability to drive. The length of time varies by state and by the severity of the offense. In some cases, you can use financial hardship to get an ignition interlock waived. The law may also require that you install the interlocks on all vehicles in the household, including ones you seldom or never drive.

If you need ignition interlock installation, then talk to RoadGuard Interlock. We offer accurate, reliable ignition interlock devices at a reasonable cost.


*Links to any third-party websites herein are provided for your reference and convenience only. RoadGuard Interlock did not create nor develop and does not own any such third-party websites. RoadGuard Interlock does not endorse nor support the content of, nor any opinions stated in any such third-party website links. RoadGuard Interlock is not responsible for the content of any third-party website or its accuracy or reliability. Nothing contained in this article or in any such third-party website shall be considered legal advice or be deemed to constitute legal advice. For any legal advice concerning a DUI arrest, charge, conviction, or consequences thereof, you should contact an attorney of your choice.