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Lockworx Locksmith

Sierra Locksmith (formerly Fontana Locksmith) has been located in Fontana at 9035 Sierra Avenue since 1972. We employ only bonded, licensed technicians who have all worked for our company over 18 years. We pride ourselves on quality same day service and all our work is guaranteed. Sierra Locksmith in Fontana makes sure that the job gets done right and in a timely matter. We want our reputation as a quality locksmith company to never be forgotten. That is why we offer a range of locksmith services which include repairing locks, replacement key, locksmith rekey, vehicle locksmith, safe locksmith, replacement car keys as well as unlocking homes, cars and businesses. We can even make a transponder key or chip keys for your car. Our replacement car keys service is our most popular. Here we do emergency vehicle opening, duplicating of keys, extraction of broken keys, emergency trunk opening, and we handle transponder key and chip keys as wells. 24/7 365 days a year...Call us now!

Website: lockworx.net

Phone: (909) 829-5257

Open now

  • Wed Open 24 Hours

9035 Sierra Ave Fontana, CA 92335 ·2141.13 mi

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Reviews

yelp
4.0 129 reviews
5 star
95 4 star
3 3 star
4 2 star
2 1 star
25
Char 08/29/26

Very professional very helpful very detailed oriented customer service was over the top. Ron was not there he initially told me to come in when I called. Dib's locksmith referred us. Thank you...

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Arthur P. 08/25/25

Shane has great customer service Affordable pricing Well taken care of as a customer

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Julie Y. 07/21/26

We were locked out of our house and Lockworx came to the rescue immediately. They were quick to resolve our smart lock issue and worked tirelessly in a difficult situation and even offered a great...

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Kyler M. 07/16/26

Ron is probably the most authentic guy I've met and will help you to his fullest capabilities to make sure you're happy. Went in for key reshaping of my trunk door to match ignition key and he...

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Jovany A. 12/30/25

Same day service, lost my keys and came to me when I needed them most. Reasonable prices, don't forget to tip them for delivering great customer service. Thank you!

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