Schedule an Interlock Device Installation in Lewisville, TX

Ride with Smart Start
& get back on the road


  • The leading Ignition Interlock Program in Texas
  • Low-price, with no hidden fees
  • Fast installation with same-day available
  • 24/7/365 Multilingual Customer Care



It only takes a moment to get your personalized quote.

Get a quick and easy IID installation with Smart Start! Get started today!

¡Obtenga una instalación rápida y fácil de IID con Smart Start! ¡Empieza hoy mismo!

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Ignition Interlock is More Than a Device. It's a Program.

If you’re searching for a car breathalyzer after a DWI or DUI, we offer the best Ignition Interlock Device. We will help you successfully complete your car breathalyzer requirement with support from caring, compassionate specialists who understand everything you need to know about your device.

However, you’ll be getting more than just a car breathalyzer. We’ll be with you right from the beginning with the services and support you need. Our services include 24/7 customer care that makes your Ignition Interlock program as easy as possible while providing excellent customer service.

Schedule an installation appointment now.

Ignition Interlock Locations in Lewisville, Texas

Let’s get started with an installation that fits your schedule, at one of the convenient Ignition Interlock locations in Dallas-Fort Worth.

  • Smart Start of Denton

    2401 Worthington Dr
    Ste 133
    Denton, TX 76207

    Installation & Service Appointments

  • Smart Start of Lewisville

    1047 E Hwy 121 Business
    Suite D6
    Lewisville, TX 75057

    Installation & Service Appointments

  • Smart Start of Carrollton

    2016 Keller Springs Rd
    Suite 132
    Carrollton, TX 75006

    Installation & Service Appointments

Choose Smart Start Interlock Systems

No hidden charges. No long-term contracts.

We pride ourselves on offering a straightforward pricing structure for drivers with no hidden fees or long-term contracts, ensuring that you know the cost from the beginning to the end of your service. You’ll know the cost from beginning to end, with no high pressure or double-talk.

Fast, convenient installation. Get an appointment that fits your schedule.

We’ll find a service center near you, often with a same-day appointment. Our specially trained technicians are committed to customized, quality installation. We can even accommodate a same-day installation appointment at a service center near you, ensuring minimal disruption to your daily routine. Additionally, when you’ve successfully met your Interlock requirement and regained your driving privileges, we can provide quick removal of the device.

Old, new, gas, electric, high performance, or low profile—we install on all types of vehicles.

Whether you’ve got an older motor vehicle or the latest electric model, you can trust that our technicians have the expertise to handle the installation with precision and care, avoiding any damage to other auto parts. Our car breathalyzers are the perfect fit for whatever you drive.

Small, discreet, and easy to use. Smart Start Ignition Interlock shouldn’t be difficult.

Our attractive, handheld car breathalyzer is about the size of a cell phone, with an intuitive keypad and display. You’ll get hands-on training to make sure that it’s easy to blow and go.

Quick calibration. Easy service. More drive-through locations than any other provider.

Texas will require your device to be serviced and calibrated on a regular basis. Our calibration appointments usually take about 15 minutes at any location that’s handy for you.

Flexible payment options. Easy autopay. Take advantage of our Client Portal.

Everyone’s budget is different. That’s why we offer weekly, monthly, or bi-monthly payments, plus an autopay option. Set it up through our Client Portal app.

You’ve got questions. We’ve got answers. 24/7 multilingual customer care.

There’s always somebody who can help when you have a question about your car breathalyzer, your account, monitoring laws, or anything else with your Ignition Interlock.


What is the average cost of an Ignition Interlock in Lewisville, Texas?

Exact IID prices will vary, but you can find our current pricing on our Texas Ignition Interlock Cost page on our website. We’re committed to providing you with the lowest cost and no hidden fees. Our expert Program Advisors are also available to provide you with a custom quote and schedule your installation today!

What do I need to bring for my appointment?

Bring a photo ID and proof of residence in the form of a document verifying your address. You may also be asked to bring any documents that pertain to your case, depending on where in Texas you or your program are located. If any other documents are required, one of our friendly Program Advisors will let you know.

What are the Interlock laws in Lewisville?

During a DWI in Lewisville, you may be required to install an IID if:

  • This is your first offense – discretion of Judge
  • You had a breath alcohol concentration (BAC) level of .15 or higher – discretion of Judge
  • A subsequent arrest was made – mandatory

You will be responsible for all costs associated with the IID and expected to bring your vehicle in for regular monitoring and service.

You may be required to complete a DWI intervention or education program, in addition to community service.

What is considered an Interlock Device violation in Lewisville, Texas?

Any of the following may constitute a violation:

  • Testing at or above the fail level of .030
  • Skipping or failing a rolling re-test
  • Missing your service appointment

Will my device require service?

Texas law dictates that your Ignition Interlock Device needs to be serviced once every 30 days.

Will the device damage my car?

No, Smart Start’s car breathalyzer will not hurt your vehicle in any way. Our service technicians are the best in the business and are able to install on all vehicles, even hybrids and electric cars!

What is needed to get my device removed?

A Texas Interlock provider cannot remove a device in Lewisville without State authority authorization from the court. Smart Start will receive authorization from the court and process it. 48 hours after the approval is processed, you will be eligible for removal.

Do I need a device on all my vehicles?

In Texas, the judge will determine how many vehicles you are required to install an Ignition Interlock Device (IID) on.

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