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Schedule an Interlock Device Installation in El Cajon

Ride with Smart Start,
and get back on the road.

 

  • California’s #1 Ignition Interlock Program
  • Low-price, with no hidden fees
  • Fast installation with same-day available
  • 24/7 customer care – Se hablamos Español

 

 

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Ignition Interlock in El Cajon: We're Always Here for You

From $1.99/Day* - No Long-Term Contracts

From $1.99/Day* - No Long-Term Contracts

Bi-weekly payment options designed to fit your budget.

Ignition interlock Costs
3,000+ Locations - Same Day Install

3,000+ Locations - Same Day Install

Quick installs by skilled technicians at convenient U.S. locations.

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Discreet, Easy-to-Use Devices

Discreet, Easy-to-Use Devices

Reliable, hygienic devices with guided tests and easy English-Spanish switching.

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24/7 Knowledgeable State Program Experts

24/7 Knowledgeable State Program Experts

Multilingual support trusted by over 1 million people, ready when you need us.

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Ignition Interlock Locations in El Cajon, California

Convenience is one of many reasons why we have countless satisfied IID customers across Southern California and the United States. Let’s get started with an installation that fits your schedule, at one of the Ignition Interlock locations in San Diego County below.

Interlock Device

IID El Cajon, CA: We're Always Here for You

If you’re searching for a car breathalyzer after a DUI, we offer the best Ignition Interlock Device (IID) in the area. We will help you successfully complete your car breathalyzer requirement with support from experienced specialists who understand everything you need to know about an Ignition Interlock in California.

However, you’ll be getting more than just an IID. We’ll be with you right from the beginning with the services and support you need. Our program includes 24/7 assistance that makes your IID experience as easy as possible.
Schedule an installation appointment now at any of our California service centers.

(800) 831-3299

The Most Discreet Ignition Interlock Devices in El Cajon, California

Smart Start’s car breathalyzers were designed to be court compliant while keeping the user’s needs in mind. We understand the desire for privacy during this difficult time, so our Ignition Interlock Device is small and discreet.

The black exterior allows you to conceal it easily in your motor vehicle, but size doesn’t dictate function! Our Ignition Interlock Device can read your alcohol-free test in less than one second, so you can get back on the road quickly.

The Best Customer Care

When you choose the cheapest Ignition Interlock Device, you’re choosing the 24/7 bilingual support of our Customer Care Center and the expertise of our local technician teams. Call (800) 831-3299 or complete the form at the top of this page to enlist Smart Start as your program partner. We’ll put the wheel back in your hands.

(800) 831-3299

Questions about Ignition Interlock Devices in El Cajon, California

Calibration is required regularly to ensure your IID is working properly. In El Cajon, we offer convenient service appointments to calibrate your device. The frequency of calibration is defined by California regulations. Generally, every 30-90 days.

Yes! Smart Start offers same-day installation appointments at many of our El Cajon-area locations, subject to availability. We understand the urgency of meeting program deadlines, so we work to accommodate your schedule and get you back on the road as quickly as possible.

Smart Start offers several convenient installation locations throughout El Cajon and the surrounding areas. Our local service centers are staffed by experienced technicians who provide fast, professional installations. To find a location near you, visit our location finder or call our 24/7 Customer Care team for assistance.

Smart Start offers affordable Ignition Interlock solutions in El Cajon. See our Interlock Device cost guide for California to learn more.

An Ignition Interlock Device (IID) prevents a vehicle from starting if it detects alcohol on the driver’s breath. The driver blows into the device, and if their breath alcohol content is below the programmed limit, the car will start. You’ll also have to complete periodic retests after starting your vehicle to ensure continued compliance. Learn more about how IIDs work with our complete guide.

In California, an Ignition Interlock Device (IID) may be required after a DUI. See our complete guide for information on IID laws and more in California.

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See What Everyone Says About Our Ignition Interlock

Excellent TrustScore Rating
#1 Customer Rated 4.7 out of 5
February 4, 2026
"New to the whole process. Jessica took time to guide and explain the process thoroughly. The direct contact and available support definitely makes a difference. Much appreciated. "
Benjamin G.
United States
February 4, 2026
"Switched from Intoxalock to smart start. Huge difference. Intoxalock was like having a brick as a handheld, bad customer service from India, and it locks you out a lot and they charge you 75.00 a pop."
Jeremy Chapin.
United States
February 4, 2026
"The Smartstart representative I spoke with was extremely helpful and made the process very simple for me. Yeah!"
Kelly Kish.
United States
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