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Automotive locksmith - Boston & Greater Boston

Smart Key Duplication & Programming

Spare Smart Keys • Proximity Fobs • Programming

Ask about additional and replacement proximity keys and push-to-start fobs. Share your vehicle make, model, year and whether a working key remains so we can review compatible options.

(617) 272-7007
Call for ServiceConfirm availability and schedulingRequest a QuoteShare vehicle and key detailsAutomotive ServicesKeys, fobs and vehicle access
Additional smart keys
Compatible key options
Programming & testing
Vehicle-specific review

Child locked in a car? Call 911 first. If someone is in immediate danger, contact emergency services first.

Emergency guidance

Smart key service options

A spare fob or replacement key starts with compatibility.

Additional smart keys

Review compatible key options while you still have a working fob. Tell us how many working keys remain.

Lost smart keys

If no working smart key remains, availability and the process depend on the vehicle and its security system.

Programming and testing

Confirm the supported functions and test the completed key with the technician before the service is finished.

Vehicle compatibility, service availability and pricing are confirmed for your request.

Send vehicle and key details

Plan your service

From vehicle details to a tested smart key.

1. Share your vehicle details

Provide the make, model, year and service location. Tell us whether you need an extra fob or have lost all working keys.

2. Review compatible options

Key type, vehicle system and remaining keys determine the options. If you already have a fob, ask the team to check it before booking.

3. Confirm, program and test

Have identification and proof of ownership or authority ready. Confirm the scope and price before work, then review and test the supported key functions.

Common questions

Before you book

Can you duplicate a smart key while I still have a working one?

Ask our team about an additional smart key for your vehicle. Include the make, model, year and number of working fobs so compatible options and programming requirements can be reviewed.

What if all my smart keys are lost?

Tell us that no working key remains. Replacement options and the process depend on the vehicle and its security system. Availability and pricing are confirmed for the individual request.

Can I bring a smart key or fob I bought online?

Share its details before booking. A similar-looking fob is not enough to establish compatibility, and some keys may not be suitable for your vehicle or for reuse. Ask the team to confirm whether it can be supported.

About SherlockLock smart key services

The right smart key is more than a matching shell.

SherlockLock helps drivers in Boston and Greater Boston review additional and replacement smart key requests. Proximity keys and push-to-start fobs can look similar while using different vehicle systems. The make, model, year and remaining working keys give our team a useful starting point.

An extra working fob and an all-keys-lost request can involve different parts and procedures. Before work begins, confirm key compatibility, supported functions, service availability and pricing. Identification and proof of ownership or authority are required, and the completed key should be tested with the technician.

Get to know SherlockLock

Customer experiences

What customers say about SherlockLock

Read feedback from SherlockLock customers about vehicle keys, unlocking and other locksmith services. These reviews cover our wider service team.

Explore all customer reviews

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Useful information for your next step.

Car keys made & copy serviceCar door unlockingTransponder keys madeIgnition repair & replacementCar lock rekeyingKey fob shell replacementLost car key deletionAll automotive servicesAutomotive service locationsCustomer reviewsFind your car modelDealership programChild locked in a car: call 911 first

Need an extra smart key or a replacement fob?

Send your vehicle make, model, year and location. Tell us whether you still have a working key so our team can review compatible options, availability and pricing.

Call (617) 272-7007Request a QuoteAutomotive Services