Essential Guide to the Colorado Ignition Interlock Device(IID)
Colorado Ignition Interlock Device (IID): The Complete Guide
If you’ve been ordered to install an Colorado Ignition Interlock Device (IID), you’re probably wondering what happens next. How does the device work? How much does it cost? What happens if you fail a breath test or miss a rolling retest?
This guide explains everything you need to know about Colorado’s ignition interlock requirements, including DMV rules, probation requirements, common violations, costs, and practical tips to help you successfully complete your IID requirement.
Table of Contents
What Is an Colorado Ignition Interlock Device?
An Ignition Interlock Device (IID) is a small breath alcohol testing device installed in your vehicle.
Before your vehicle will start, you must provide a breath sample. If the device detects alcohol above the programmed limit, the vehicle will not start.
The IID also requires random breath tests while you are driving to ensure continued compliance.
Who Must Install Colorado Ignition Interlock Device (IID)?
An IID may be required if you:
- Were convicted of DUI
- Were convicted of DWAI in certain circumstances
- Refused a chemical test under Colorado’s Express Consent law
- Have multiple alcohol-related driving offenses
- Are seeking early driver’s license reinstatement
Requirements vary depending on your driving history, BAC level, and whether your restriction is imposed by the Colorado DMV, the court, or both.
How an Ignition Interlock Device Works
The process is straightforward:
Step 1
Enter your vehicle.
Step 2
Blow into the IID.
Step 3
The device analyzes your breath alcohol concentration.
Step 4
If your breath alcohol level is below the programmed threshold, the vehicle starts.
Step 5
During your trip, the IID may request random “rolling retests.”
These retests help ensure that alcohol was not consumed after the vehicle was started.
Colorado Ignition Interlock Device Requirements
Depending on your situation, the Colorado DMV may require:
- Installation of an approved IID
- Continuous monitoring
- Monthly calibration appointments
- No failed alcohol tests
- No missed rolling retests
- Compliance reports submitted by your IID provider
Failure to comply may delay or prevent full license reinstatement.
DMV Requirements vs. Court Requirements
One of the biggest misconceptions is that satisfying one agency automatically satisfies the other.
It doesn’t.
Colorado DMV
The DMV focuses on:
- Driving privileges
- License reinstatement
- IID compliance
- Alcohol test reports
- Calibration reports
Criminal Court
The court focuses on:
- Probation conditions
- Sentencing requirements
- Community safety
- Compliance with court orders
You may complete probation but still lose your driving privileges if DMV requirements are not satisfied.
Rolling Retests Explained
While driving, your IID may request another breath sample.
This is called a rolling retest.
You are expected to safely provide another sample when prompted.
Missing a rolling retest or repeatedly delaying one may be treated as a compliance violation.
Common IID Violations
Common violations include:
- Positive alcohol breath test
- Missing a rolling retest
- Skipping calibration appointments
- Tampering with the device
- Having another person provide a breath sample
- Driving a vehicle that does not have your required IID installed
- Attempting to disconnect or disable the device
What Happens After a Violation?
Depending on the circumstances, consequences may include:
- Extension of your IID requirement
- Additional monitoring
- Temporary lockout
- License suspension
- DMV hearing
- Probation violation
- Additional court sanctions
Promptly addressing a violation is often easier than waiting until multiple violations accumulate.
How Much Does a Colorado Ignition Interlock Device Cost?
Costs vary by provider but generally include:
| Expense | Typical Cost |
| Installation | $70–$150 |
| Monthly Monitoring | $80–$120 |
| Removal | $50–$100 |
Actual costs vary by provider, vehicle type, and service plan.
Colorado Approved IID Providers
Colorado requires drivers to use a DMV-approved ignition interlock provider.
Examples include:
Always verify that your provider is currently approved by the Colorado DMV before installation.
How Long Must You Keep an IID?
The required duration depends on several factors, including:
- First vs. repeat offense
- BAC level
- Chemical test refusal
- DMV requirements
- Court orders
- Compliance history
Violations during the monitoring period may extend the required installation time.
Getting Your License Reinstated
When your IID requirement is complete, you may need to:
- Complete the required monitoring period
- Resolve all violations
- Submit proof of compliance
- Pay applicable reinstatement fees
- Meet all Colorado DMV reinstatement requirements
Do not remove your IID until you have confirmed that you are authorized to do so. Removing it too early may create additional licensing issues.
Frequently Asked Questions
Can I drive someone else’s car?
If you are required to use an IID, you generally may not drive a vehicle that does not have the required device installed unless an exception applies under Colorado law.
Will mouthwash cause a failed test?
Alcohol-based mouthwash and certain other products may temporarily affect breath alcohol readings. Following your IID provider’s instructions and waiting before testing can help reduce false positives.
What if I miss a calibration appointment?
Missing scheduled service appointments may result in a lockout, additional fees, or compliance issues.
Can someone else blow into my IID?
No. Attempting to have another person provide a breath sample can result in significant legal and administrative consequences.
Does the IID record my activity?
Yes. Modern IID systems generally record breath test results and other compliance information, which may be reported to the appropriate authorities.
Tips for Successful IID Compliance
✔ Never drink before driving.
✔ Keep every service appointment.
✔ Understand how rolling retests work.
✔ Read your provider’s instructions carefully.
✔ Report equipment problems immediately.
✔ Keep copies of all compliance records.
✔ Ask questions if you’re unsure about any requirement.
Need Help Understanding Colorado DUI Requirements?
Navigating Colorado’s DUI requirements can be confusing, especially when dealing with both court and DMV obligations. Understanding your responsibilities early can help you avoid unnecessary delays, additional costs, and compliance issues.
Whether you’re beginning DUI education, working toward license reinstatement, or trying to understand what comes next, the team at 5280 Human Care Center can help you understand the process and connect you with the resources you need.
Contact 5280 Human Care Center by email (help@5280hcc.com) or text/ phone (303-872-0724) today to learn more about Colorado DUI education, therapy, and compliance requirements.
