Frequently Asked Ignition Interlock Questions

By September 18, 2015Thomas Law Firm


So, you’ve been charged with drinking and driving and ordered to have an ignition interlock device (IID) installed in your car. It is not as simple as just bringing your car to the police to get outfitted; a lot of the process is actually your responsibility to get done, or face further penalties.

Frequently Asked Questions about IIDs in Colorado

Q: Will it cost me money to install an IID in my car?
A: It might. You should contact one of the approved Colorado IID vendors, such as Intoxalock or Guardian, to get a quote for your vehicle.

Q: Are there ongoing costs for having an IID?
A: Yes. Because you are essentially renting the IID from the vendor, you will have to pay a monthly fee that includes regular calibration every month or two. The fee is usually somewhere around $70 per month, but depends on the vendor.

Q: How frequently will I be required to blow into the IID?
A: Your car will indicate the need for a rolling retest after five minutes of driving if you’ve just started the vehicle. After this, your car will ask for a retest every 45 minutes. You have five minutes to perform the retest, just in case you are unable to pull over immediately. You do not have to pull over, but often it is the safer choice.

Q: What if I fail a retest and my car shuts down on the road?
A: That actually does not happen with rolling retests, for obvious reasons. If your IID receives a positive sample (which does not mean you are drunk – mouthwash, perfume, cologne, hand sanitizer and other products can cause a positive reading), depending on the device and manufacturer it will register a violation, start your car alarm or activate the lights and horn on your car. When this happens, you will need to pull over and turn off the ignition to stop the alarms. Some IIDs will have periods following a positive test where you will have to wait 5-15 minutes to restart your car.

If you have been charged with driving under the influence of alcohol in Colorado, contact a Denver drunk driving attorney to discuss your case.

Thomas Law Firm – Denver Drunk Driving Lawyers

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