Ignition Interlock Devices: Requirements & Costs – A Beginner’s Guide

If you’ve been charged with a DWI, you may be required to install an Ignition Interlock Device (IID) as part of your pretrial release or sentence. While the process can seem daunting, understanding the requirements, costs, and compliance rules can help you navigate this situation with confidence.

This guide breaks down everything you need to know about Ignition Interlock Devices, from installation to maintenance and compliance.

What Is an Ignition Interlock Device (IID)?

An IID is a breathalyzer installed in your vehicle to prevent it from starting if alcohol is detected on your breath. It’s often required for individuals charged with or convicted of DWI offenses to ensure they don’t drive under the influence of alcohol.

When Are IIDs Required?

You may be required to install an IID if:

  1. As a Pretrial Condition: To secure release from jail after a DWI arrest.
  2. Following a Conviction: As part of your probation or sentence for a DWI conviction.
  3. To Reinstate Your License: If your driver’s license has been suspended due to a DWI.

Texas Laws on IID Use

  • For repeat offenders or individuals with a high Blood Alcohol Concentration (BAC) (0.15% or higher), IID installation is often mandatory.
  • First-time offenders may also be required to install an IID depending on the circumstances of their case.

How to Get an IID Installed

Step 1: Choose a State-Approved Provider

In Texas, IIDs must be installed by a provider certified by the Texas Department of Public Safety (DPS).

  • Where to Find a Provider:
    • Your court order may include a list of approved providers.
    • You can also search for certified providers online or ask your attorney for recommendations.

Step 2: Schedule Installation

  • Appointment Required: Contact the provider to set up an installation appointment.
  • Duration: Installation typically takes 1-2 hours.

Step 3: Provide Necessary Documentation

Bring the following to your installation appointment:

  • Your court order or license reinstatement notice.
  • A valid ID.
  • Vehicle registration and proof of insurance.

Costs Associated With IIDs

1. Installation Fees

  • What It Covers: The cost to install the IID in your vehicle.
  • Average Cost: $75–$150, depending on the provider and your vehicle type.

2. Monthly Monitoring Fees

  • What It Covers: Ongoing calibration and maintenance of the device.
  • Average Cost: $60–$90 per month.

3. Removal Fees

  • What It Covers: The cost to remove the device once you’re no longer required to use it.
  • Average Cost: $50–$100.

4. Additional Costs

  • Missed Appointments: Fees may apply if you miss required calibration or maintenance visits.
  • Damage Fees: You may be charged for any damage to the device.

How Does the IID Work?

  1. Starting the Vehicle: You must blow into the device before starting the engine. If your BAC is below the preset limit (typically 0.02%), the car will start.
  2. Rolling Retests: While driving, the device will require periodic breath tests to ensure continued compliance.
  3. Recording Data: The IID logs all test results, missed tests, and tampering attempts, which are reported to the court or supervising agency.

Compliance Requirements

To avoid penalties or extensions, you must adhere to these guidelines:

1. Regular Maintenance and Calibration

  • Frequency: IIDs require calibration every 30–60 days, depending on your provider and court order.
  • What to Expect: The provider will check the device, download logged data, and recalibrate it.

2. Avoid Tampering

  • Tampering with or attempting to remove the IID may result in:
    • Extension of your IID requirement.
    • bond revocation
    • Additional criminal charges.

3. Pass Every Test

  • Failing a breath test will be reported to the supervising agency and may lead to:
    • Additional fines or penalties.
    • Revocation of probation or pretrial release.

How Long Do IIDs Stay Installed?

The length of time you’re required to use an IID depends on your case:

  • First-Time Offenders: 6 months to 1 year.
  • Repeat Offenders: 1–2 years or longer.
  • High BAC Cases: Often require extended IID use.

What Happens If You Don’t Comply?

Failing to comply with IID requirements can have serious consequences, including:

  1. License Suspension or Revocation: Your driving privileges may be revoked again.
  2. Probation Violations: Noncompliance may result in additional penalties, including jail time.
  3. Extended IID Requirements: The court may increase the time you’re required to use the IID.

Why Hiring an Attorney Is Essential

An experienced defense attorney near you can help you navigate IID requirements and minimize the impact on your life. They can:

  • Challenge the necessity of an IID if it’s not warranted.
  • Help you secure financial assistance or payment plans for IID costs.
  • Ensure compliance with court orders to avoid additional penalties.

Take Control of Your IID Process Today

At David Smith Law Firm, PLLC, we’ve helped clients manage Ignition Interlock Device requirements and get back on the road with confidence. From challenging DWI charges to navigating IID compliance, we’re here to guide you every step of the way.

📞 Contact us today for a free consultation! Visit https://www.davidsmith.law/contact-us/ to learn how we can help.

Your driving privileges are too important to leave to chance—let’s tackle this together.