Key Duplication & Spare Keys
Only have one key? Get a spare before it becomes an emergency — regular keys, chip keys, flip keys and smart keys.
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Mobile Car Locksmith in Greenwich, CT
Míster Keys comes to you in Greenwich: lost keys, spare and smart keys, ignition repair and programming — 24/7.
Connecticut
Your Car Locksmith in Greenwich
- Greenwich Avenue
- Cos Cob
- Old Greenwich
- Byram
- Riverside
Greenwich is the first Connecticut town past the New York state line, a short drive from Westchester. We program spare smart keys and fobs for European, Asian and American vehicles.
Tell us the year, make and model when you call so we bring the right key for your car.
Book a Locksmith in Greenwich
Tell us what happened and where the car is. After you send it, you can continue the conversation on WhatsApp.
Our Services in Greenwich, CT
Ignition Switch & Door Cylinder Repair
Key won't turn, ignition stuck or a door lock that stopped working? We repair or replace ignition switches and door cylinders on site.
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Lost Car Key Programming & Replacement
Lost every key to your car? We cut and program a brand-new key on site — all makes, including chip keys and smart keys.
See serviceECU / Module Programming & Key Cloning
Immobilizer, BCM and key-module programming plus key cloning, done with professional diagnostic equipment.
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Used Car Key Security: Key Erase & Reprogramming
Just bought a used car? Make sure nobody else has a working key. We erase old keys and reprogram only yours.
See serviceWhy Greenwich Drivers Call Us
- 100% mobile: we come to your car
- Open 24/7, weekends included
- All makes: American, European, Asian and Chinese
- A clear price before we start
- Hablamos español
CustomerQueens, NY
★★★★★
“Bought a used car and had them erase the old keys and program mine plus a spare. Great service and very professional.”
Questions from Greenwich
Can you copy a smart key or push-to-start key?
Yes. We program smart keys and proximity fobs for most makes so the new key works with the push-to-start button.
Do you work at night in Greenwich?
Yes. Míster Keys works 24/7, including nights, weekends and holidays.
Coverage area · 100% mobile service
Need a Car Locksmith in Greenwich?
Call or send a WhatsApp now. We come to you, 24 hours a day, 7 days a week.