Do you provide 24/7 automotive locksmith service?

Yes. Alarm Command provides 24/7 emergency automotive locksmith service, including car lockouts, key programming, and ignition issues across Loudoun County and nearby areas.

Which areas do you serve?

We serve Loudoun County and Northern Virginia, including Sterling, Ashburn, Leesburg, Dulles (IAD), Reston, Herndon, Tysons, and surrounding communities.

Can you make a car key if all keys are lost?

Yes. We can originate and program new keys and smart fobs when all keys are lost for most makes and models, including push-to-start vehicles.

Do you service vehicles at Dulles Airport (IAD)?

Yes. Our mobile technicians frequently assist customers at IAD for lockouts, lost keys, and key fob programming. Location and parking rules may apply.

What vehicle makes and models do you support?

We handle most brands, including BMW, Mercedes, Audi, Volkswagen, Lexus, Toyota, Honda, Nissan, Ford, GM, Chrysler, Jeep, Dodge, Hyundai, and Kia.

How fast can a technician arrive?

Typical ETA is 20–60 minutes depending on technician availability, traffic, and your exact location.

What documents do I need for key replacement?

For security, we require proof of ownership and a valid photo ID before performing key origination or programming.

Can you program aftermarket key fobs and smart keys?

Yes. We can program OEM and many high-quality aftermarket keys and fobs. We will advise on compatibility and reliability for your specific vehicle.

Do you repair or replace ignitions and door locks?

Yes. We diagnose and repair ignition and lock cylinder issues, and can replace or rekey components to match your existing key when possible.

How much does car key replacement cost?

Pricing varies by vehicle, key type (standard, transponder, smart), and location. Contact us for a fast, exact quote.

What forms of payment do you accept?

We accept major credit/debit cards and other common payment methods. Payment is due upon service completion.

What is your policy on special-order or dealer-coded keys?

Special-order and dealer-coded keys are custom-paired to your vehicle and are non-returnable and non-refundable once ordered or programmed.

HomeResourcesWhat Is a Transponder Car Key? | Alarm Command

Automotive key technology

What Is a Transponder Car Key?

A transponder key combines a physical key with an electronic credential that the vehicle may need to recognize before normal starting is permitted.

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Most calls are answered live. Tell us the vehicle and where it is parked.

Text usSend a photo of your key or fob Request a callbackSend your vehicle details online

✓ VA DCJS #11-18761✓ Licensed & insured✓ Ownership verification✓ Mobile automotive focus

Alarm Command mobile automotive locksmith serving Hampton Roads and Virginia's Eastern Shore

Need service today?Call or text your ZIP + vehicle year/make/model to check current availability.

What should I know before calling an automotive locksmith?

Have the vehicle location or ZIP code, the year, make and model, what happened to the key or fob, and whether any working key remains. Proof of identity and vehicle ownership or written authorization is required before key origination or programming. Call or text (703) 855-4041.

VA DCJS Licensed#11-18761

Licensed & InsuredProfessional mobile operation

Automotive FocusKeys · fobs · programming · lockouts

Clear ConfirmationCompatibility & availability confirmed

The blade and chip do different jobs

The physical blade operates the matching lock or ignition components. The transponder portion communicates with the vehicle security or immobilizer system.

A correctly cut key may still require programming

On vehicles that use a transponder system, a matching blade alone may not complete the job. The compatible key must also be accepted by the vehicle according to the applicable programming procedure.

Vehicle details determine the process

Year, make, model, key type, immobilizer platform and whether a working key remains can affect which service procedure applies.

Related service pages

Continue to Automotive Locksmith Services

Use the service pages for location-specific requests, vehicle compatibility and direct contact options.

Car Key Replacement

Replacement and origination for eligible vehicle keys when a key is lost, damaged, or a spare is needed.

Explore Car Key Replacement

Lost Car Key / All Keys Lost Service

Mobile key origination, cutting, and programming options for eligible vehicles when no working key remains.

Explore Lost Car Key / All Keys Lost Service

Car Lockout Service

Mobile vehicle-entry help for eligible cars, trucks, and SUVs when keys are locked inside.

Explore Car Lockout Service

Key Fob Programming

Programming and replacement options for compatible remote-head keys and key fobs.

Explore Key Fob Programming

Smart Key & Proximity Key Programming

Programming and replacement options for compatible push-to-start smart and proximity keys.

Explore Smart Key & Proximity Key Programming

Transponder Key Programming

Programming for compatible chip keys used with vehicle immobilizer systems.

Explore Transponder Key Programming

Car Key Duplication & Spare Keys

Spare and duplicate key options for many vehicles when a working key remains.

Explore Car Key Duplication & Spare Keys

Automotive Key Cutting

Precision cutting for eligible standard, laser-cut, and high-security automotive key blades.

Explore Automotive Key Cutting

Local coverage

Automotive Locksmith Service Areas

Explore city, town, county, community and neighborhood pages throughout the current service area.

Virginia Beach Norfolk Chesapeake Portsmouth Suffolk Hampton Newport News Poquoson Williamsburg York County James City County Isle of Wight County Gloucester County Southampton County Surry County Accomack County Northampton County Franklin

Browse All Service Areas

Fast mobile service request

Request Automotive Locksmith Service

A shorter two-step request designed for phones. Start with the vehicle and problem, then send your contact details.

What to have ready

Exact vehicle location or ZIP code
Vehicle year, make and model
What happened to the key or fob
Whether any working key remains
Best phone number for confirmation

Urgent service?Calling or texting is the fastest way to check current technician availability.Call Alarm Command (703) 855-4041

1 Vehicle & problem2 Contact & authorization

Location / ZIP Code *Vehicle Year *Vehicle Make *Vehicle Model *Service Needed *Working key? *