Ignition Interlock in Fontana

Choose the most trusted ignition interlock provider in Fontana. Guardian is here to save you time and money.

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Ignition Interlock Locations in Fontana, California

Guardian Interlock

9530 Sierra Ave Unit 10
Fontana, CA 92335

(909) 248-4941

Open Today – 9am-3pm

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Guardian Interlock

13390 Arrow Rt
Fontana, CA 92335

(909) 248-4971

Open Today – 9am-6pm

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4.5

Average Google Rating

1 million

Successful Device Installs

24/7

Customer Service

Ignition Interlock in Fontana

Why choose Guardian Interlock?

In Fontana, California we have 24/7 customer service. Contact a California expert to answer any of your questions.

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  • Our technicians are helpful and  understanding
  • Our technicians will explain how the device works
  • Our technicians will ensure everything is working properly 
  • Our technicians will explain the next steps
  • You will be provided with a certificate of installation (often required to regain a driver’s license)