Brand Certified
Intoxalock Ignition Interlock
2.7(6 reviews)
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Business Details
19073 IH 45 South, Shenandoah, TX
77385, United States
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
(936) 647-3580
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
https://www.intoxalock.com/locations/tx/shenandoah/19073-ih-45-south-2468
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
About
Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Car Inspection StationIntoxalock
Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Shenandoah, TX is here to help you get back on the road after a DUI.
Intoxalock has more locations than any other provider, and we can find an interlock installation location near you. We will help you understand TX interlock, or IID, laws and regulations. Our interlock installation locations are staffed with certified professionals who will install and service your car breathalyzers. For 30 years, Intoxalock has been a trusted interlock ignition device provider. Call now to talk to a TX expert.
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Certified by Intoxalock Ignition Interlock • Feb 22, 2026
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Certified by Intoxalock Ignition Interlock • Feb 22, 2026
Reviews
2.7
6 reviews
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- JJJerryNov 29, 20241.0Terrible equipment. Have had system replaced twice in the last 8 months. Both times leaving me without a vehicle for over a week. Unreliable service center and difficult communications.
- JFJonathan FeinNov 6, 20241.0The company is absolutely horrible never wanting to help just trying to get you out of your money glad I will never deal with them again
- FHFoster HarmonJun 2, 20225.0My experience with Car Toys was good. Had my in home unit calibrated. Seem Professional, & curious. Out in less than 10 minutes.
Frequently Asked Questions About Intoxalock Ignition Interlock
How does an interlock device work?
An ignition interlock device (IID) is a small breathalyzer installed in your vehicle to prevent it from starting if alcohol is detected on your breath. Before driving, you'll blow into the device. If your breath alcohol concentration (BrAC) is below the programmed limit, the car starts. Periodic retests occur during your trip to ensure continued compliance. To read more on Intoxalock, you can read our ignition interlock device guide.
What is the cost of an ignition interlock device?
The installation of an ignition interlock device, often called a car breathalyzer, typically costs between $70 and $150. This one-time fee is paid at the start of your lease and covers the service center's labor to install the device in your vehicle. Payment is made directly to the service center at the time of installation. For more on cost breakdowns, you can read our cost of ignition interlock device guide.
How do I use my interlock device?
Using an IID is simple. To start your vehicle, blow into the device as directed. If the device detects no alcohol, your car will start. You may be prompted for "rolling retests" while driving, where you’ll blow into the device again to confirm compliance. How-to videos are also available on the Intoxalock mobile app.
Where do I get an ignition interlock device?
Ignition interlock devices can be installed at certified service centers nationwide. Intoxalock offers a convenient network of locations and helps you schedule an installation appointment near you. Visit our Intoxalock locations page or call us to find the nearest service center and begin the installation process.
How long will my installation take?
Installing an ignition interlock device typically takes 1-2 hours, depending on your vehicle type. Certified technicians ensure the device is properly installed and provide you with training on how to use it. Contact Intoxalock for an appointment and an accurate time estimate for your installation.
What happens if I fail a breath test on my ignition interlock device?
If you fail a breath test, your vehicle will not start, and the device will log the event. Depending on your state’s regulations, multiple failed tests may trigger additional penalties, such as lockouts or reporting to your monitoring authority. Intoxalock devices allow you to retest after a short wait if alcohol is no longer detected. Always follow your state’s guidelines to remain compliant.
Can I install an ignition interlock device in a vehicle I don’t own?
Yes, in most cases, you can install an ignition interlock device in a vehicle you regularly drive, even if you’re not the registered owner. However, the vehicle owner must provide consent for the installation. Intoxalock works with you and the owner to ensure compliance with state regulations and the successful setup of the device.
What should I do if my ignition interlock device locks me out?
If your ignition interlock device locks you out, it’s usually due to missed tests, failed tests, or state-specific requirements. Intoxalock offers a simple lockout override process in most cases to help you get back on the road quickly. Contact Intoxalock customer support for assistance and to understand the steps needed to resolve the issue.
What services does Intoxalock Ignition Interlock in Shenandoah, TX provide?
Intoxalock Ignition Interlock in Shenandoah offers installation, calibration, and removal of ignition interlock devices (IIDs) with certified professionals to help drivers comply with IID laws.
How does an ignition interlock device work?
An IID is a breathalyzer installed in your vehicle that prevents starting if alcohol is detected on your breath, requiring you to blow into the device before driving and during periodic retests.
What is the cost to install an ignition interlock device?
Installation typically costs between $70 and $150 as a one-time fee paid at the start of your lease to the service center for labor and setup.
Where can I get an ignition interlock device installed near Shenandoah, TX?
You can get ignition interlock devices installed at Intoxalock's certified service center located at 19073 Ih 45 S, Shenandoah, TX 77385, staffed by certified technicians.
What are the business hours for Intoxalock Ignition Interlock in Shenandoah?
Their onsite service hours are Monday to Saturday from 9:00 AM to 7:00 PM and Sunday from 10:00 AM to 6:00 PM, while online services are available 24 hours a day.
What payment options does Intoxalock accept?
Intoxalock accepts American Express, Check, Discover, Financing, MasterCard, and Visa as payment methods.
What should I do if my ignition interlock device locks me out?
If locked out due to missed or failed tests, contact Intoxalock customer support for assistance; they offer override processes to help you resume driving quickly.
Is there an Intoxalock mobile app available?
Yes, the Intoxalock Mobile app is available on the Apple App Store to access how-to videos and device support.
What nearby places can I visit before or after my appointment at Intoxalock?
Nearby places include El Bosque Mexican Restaurant for dining, Venus Facial And Nails for beauty treatments, and Portofino Plaza for shopping, making your visit more convenient and enjoyable.
How can nearby services like Conroe Car Toys and Dyson Service Center complement my visit to Intoxalock?
If you need automotive repairs or maintenance alongside your ignition interlock installation, nearby automotive service centers like Conroe Car Toys and Dyson Service Center can assist you conveniently.
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