Lost Car Key Replacement San Marcos TX (512)523-4550

If you’ve lost your car keys, broken them in the ignition, or got locked out, our mobile locksmith team in San Marcos is ready to help. We specialize in fast, on-site car key replacement, ignition repair, and lockout service. With years of experience and the latest key programming tools, we can service most makes and models right where you are—no need for towing or dealership appointments. Whether it’s an emergency or a scheduled replacement, Austin Key Replacement is your trusted car locksmith in San Marcos.


Car Key Replacement Services

In San Marcos, car key replacement doesn’t have to mean an expensive trip to the dealership. Our mobile locksmiths can replace your lost or broken car key on-site, saving you time and money. Whether your key was stolen, misplaced, or simply stopped working, we can generate a new one with full programming capabilities right at your location.

We support traditional metal keys, transponder chip keys, remote fobs, and smart key systems. Need a fast replacement? Visit our Lost Car Key guide to see what you’ll need and how we work across all neighborhoods in San Marcos.

Car Key Duplication and Programming

Don’t wait until you’re locked out—get a spare car key made today. We provide expert key duplication and chip programming services throughout San Marcos. Having a duplicate car key on hand can save you hundreds in emergency lockout fees or last-minute towing costs. Whether you have a traditional ignition key, a remote head key, or a modern smart fob, our mobile team can clone or program a working copy on-site.

Our car locksmiths in San Marcos work with most domestic and foreign vehicles, including Ford, Toyota, Honda, Chevy, Nissan, Kia, and BMW. We handle basic duplicate cutting for mechanical keys and full programming for advanced keys. Learn more in our guide: The Complete Guide for Duplicate Car Keys.

Need to know if your key contains a transponder chip? Visit our transponder key explanation to find out. Or if your vehicle uses remote locking, review What is Key FOB to understand what we can duplicate. We offer flexible scheduling and affordable mobile service across San Marcos.

Ignition Repair and Replacement

Key won’t turn? Car not starting? You may be dealing with a damaged ignition. Our San Marcos ignition locksmiths specialize in diagnosing and repairing ignition cylinders and switches on-site. Whether your ignition is jammed, turning halfway, or completely broken, we’ll inspect and fix it without requiring a tow to a mechanic or dealer.

Visit our dedicated Ignition Repair page for symptoms, causes, and what to expect when you book a visit in San Marcos.

Transponder and Smart Key Services

Many cars in San Marcos use anti-theft transponder systems or smart push-start keys. If your key won’t start the car or you’ve lost your only smart fob, we can help. Our locksmiths program new transponder keys using vehicle-specific OBD tools, ensuring your new key matches your ECU or immobilizer system.

We also replace or reprogram smart key systems for brands like Lexus, Infiniti, Honda, and Chrysler. Learn more about this technology and what your vehicle uses by reading What is a Transponder Key?.

Remote Key Fob Repair and Replacement

When your key fob stops responding, it might just need a new battery—or it may be time for a replacement. We provide fast mobile key fob repair and replacement in San Marcos. From worn buttons to signal loss, our techs can fix common fob issues or supply a new programmed remote on-site.

Want to understand your options? Start with our breakdown: What is Key FOB.

Proximity Keyless Entry System Assistance

San Marcos drivers using proximity key systems may experience sudden failures or unrecognized keys. If your car’s push-to-start system isn’t detecting your fob, our locksmiths can help. We diagnose RF signal issues and provide replacement or reprogrammed proximity fobs quickly.

Explore how proximity entry works in our guide: What is Keyless Entry?

Pricing and Service Call Information


We pride ourselves on transparent pricing for all car locksmith services in San Marcos. Final prices depend on your vehicle’s year, lock condition, and the type of key system involved. After diagnosing your situation on-site, our technician will always provide a final quote for approval before starting any work.

Service Type Description Price
Service Call Dispatch and on-site diagnosis in San Marcos $29
Car Key Replacement New key cutting + programming on-site $90–$220
Transponder Key Programming Program chip key to immobilizer system $70–$150
Ignition Repair Repair or replace jammed/damaged ignition $120–$250
Remote Key Fob Replacement Program new remote with functioning buttons $110–$240
Proximity Key Replacement Reprogram or replace push-to-start fobs $150–$350

Frequently Asked Questions

Can you replace my car key if I have no spare?

Yes. Even if you’ve lost your only key, our mobile locksmiths in San Marcos can create and program a new one using your VIN or decoding the lock.

Is your service available 24/7 in San Marcos?

Absolutely. We offer emergency car key replacement and unlock service 24 hours a day, 7 days a week.

Can you make keys for all car brands?

We service most vehicles on the road today—Toyota, Ford, Chevy, BMW, Honda, Dodge, and many others. Just call us with your make, model, and year.

How long does a key replacement take?

Most services take 30–60 minutes depending on your vehicle’s system and key type. We aim to complete all jobs in one visit.

Do I need proof of ownership?

Yes. For security, we require a valid ID and proof that you own or are authorized to access the vehicle.

Do you unlock cars too?

Yes. If you’re locked out, our technicians use non-damaging tools to open your car fast. Learn more in What To Do If Locked Out.

Can I provide my own key to program?

Sometimes. If it's compatible and unprogrammed, we may be able to work with it. We'll inspect the key before proceeding.

What’s the difference between a key fob and a proximity key?

A key fob typically controls lock/unlock and panic functions. A proximity key allows for passive entry and push-button start. See our guides on Key FOB and Proximity Keys.

Do you charge extra for mobile service in San Marcos?

No extra fees for mobile locksmithing—we include travel and setup in our flat-rate service call.

What payment methods do you accept?

We accept cash, credit/debit cards, and popular mobile payment apps for your convenience.

Conclusion

For fast and reliable car key replacement in San Marcos, choose a trusted mobile locksmith team that puts your time and safety first. We proudly serve nearby areas like Round Rock, Pflugerville, Cedar Park, Buda, Kyle, Leander, Lakeway, Hutto, Del Valle, Bee Cave, West Lake Hills, and Georgetown.

Need help in zip codes like 78701, 78704, 78723, or 78758? We’re just a call away at (512)523-4550 or email us at info@austinkeyreplacement.com.

References

Services

AustinKeyReplacement skillful mobile vehicle lock-smith task force are serviceable 24/7 holidays and weekends rain or shine furnished with suitable bypassing module, lock rekeying and high security key cutter competent for all your locks, keys and ignition burdens.
Lost Car Keys
Whether you broke your last remote fobik key or lost your transponder, keyless entry or sidewinder flip key to your car, our auto lockman arrange car key replacement services 24hr...
Ignition Repair
We are ready 24 hours to bestow any ignition cylinder rekey, reprogram or replacement for any kind of automotive with certified hundred percent client delight...
Unlocking Car Door
Our automobile pop a lock service can help you out in unlocking every single type of SUV, truck, car or semi-trailer professionally eliminating damage to door frame, electric wiring, windows or the power locks...


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Latest News

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About Us

What We Do

Austin Key Replacement is San Marcos Texas main source for 24 hour car key replacement services. Using advanced diagnostic tools we are able to deal with modern vehicle anti theft systems. Our extremely trained key made agents goal is to offer town fastest automotive locksmithing service. Instead of towing your vehicle to the dealer we cut down on prices and the waiting time on the long interminable line. All you need to do is pick up your smart phone or land line and call our office at (512)523-4550. Share basic information about your incident and our technician will come out to your juncture within 25 min.



License

A company in San Marcos, offering manipulation of locks must be a registered locksmith. At Austin Key Replacement we take your safety as a crucial and important entity of our future and success. Our agents are going through a process of Texas laws for your passengers and valuable protection. Our technician are checked for clean driving records, clean history and finger printing check. We are fully licensed, insured and bonded to perform any type of lock modification.



Local

Austin Key Replacement provides San Marcos Texas with rapid, regional and versatile key replacement service onsite in Wimberley, Martindale, Redwood and Niederwald. Our goal is to carry our emergency key made services on demand. Near Fisher Hall, Belvin Street Historic District, Belger-Cahill Lime Kiln, Hardy-Williams Building or Goforth-Harris House, we can assist within 25-30 minutes. If you want to duplicate car keys in San-Marcos neighbourhoods, we can also take appointments. Our auto replacement keys professionals will arrive equipped with all the equipment and experience required to complete the task onsite.


Coverage Area



Elgin TX
Buda Georgetown Bastrop Manor Round Rock Austin Hutto Floresville Leander San Marcos Jollyville Cedar Park Barton Creek Pflugerville Lakeway Bee Cave Taylor Kyle 78747 78746 78723 78731 78757 78722 78754 78705 78728 78701 78613 78653 78114 78759 78640 78602 78748 78727 78752 78703 78736 78719 78737 78751 76574 78735 78724 78739 78717 78745 78749 78665 78664 78721 78756 78626 78732 78750 78641 78610 78656 78730 78725 78726 78712 78738 78704 78744 78729 78758 78733 78633 78734 78634 78742 78621 78741 78628 78702 78660 78753


Costs



Service Call 19 - 29

Car lockout 35 - 100

Lost Key Replacement 100 - 250

Ignition Repair 150 - 250

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