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MYSTIC.AUTO KEY (617) 961-9211

Service

Push-to-start proximity key replacement

The fob with no blade. Kept in your pocket, push to start.

A proximity key never leaves your pocket — the vehicle detects it and you push a button to start. There is no blade to copy and no mechanical workaround. Replacing one means programming a new fob into the encrypted system at the car.

I handle the common makes on site, usually in about twenty minutes. A spare is added to the existing set; an all-keys-lost job originates a fob from scratch and clears the lost ones.

Why a proximity fob costs more

The fob itself is more expensive than a bladed key. The programming is an encrypted session that can take the longest of any key type. For all-keys-lost, a PIN is extracted from the immobilizer before the new fob is paired.

That work is why the range runs from about $250 for a spare up to $550 for an all-keys-lost job on a higher-end vehicle.

Which vehicles use these

Most cars built after about 2014 offer push-to-start, and many have it standard. Honda, Toyota, Nissan, Hyundai, Subaru, Ford, and Jeep all use proximity systems I program on site.

A few model years on a small number of makes encrypt programming to the dealer only. When that applies to your vehicle, you are told before any charge.

Proof of ownership

Before any key is cut or programmed, the registration or title in your name and a matching photo ID are checked. This is the reason a key made through this business cannot be used to steal a car. It is stated as a feature rather than a hurdle — it keeps every vehicle safe, and it deters the kind of request that no honest locksmith should take.

Questions

My push-to-start stopped working. Is it the fob or the car?
Often it is the fob battery. A battery replacement and test is $25 and is the first thing tried. If the fob itself has failed, a replacement is programmed at the listed range.
Can I have more than one proximity fob?
Yes. Multiple fobs can be paired to the same vehicle. A spare proximity fob is one of the most useful keys to own, because losing the only one is an expensive all-keys-lost job.

Or match your key by sight

Already know your key? Match it here.

Choose your key type

Select a key above to see the price range and what to do next.

Basic metal blade

Honest price range

Spare $45–75

All keys lost $60–95

Spare: Order ahead · 2–3 days All keys lost:

A plain cut key with no electronics. Common on older domestic trucks and a few basic models. No transponder, no buttons.

Bladed keys are cut to your vehicle’s specification, so this is booked ahead rather than done on the spot. Order today, programmed and in your hand in 2–3 days.

Transponder key

Honest price range

Spare $135–185

All keys lost $225–325

Spare: Order ahead · 2–3 days All keys lost: Not currently offered

A plastic-headed key with a transponder chip inside. Looks like an ordinary key but the vehicle will not start without the chip. Most cars since about 1998.

Bladed keys are cut to your vehicle’s specification, so this is booked ahead rather than done on the spot. Order today, programmed and in your hand in 2–3 days.
All keys lost for this key type is not currently offered. The dealer is the path when every bladed key is gone — get a spare while a working key still exists.

Remote head key

Honest price range

Spare $175–250

All keys lost $275–375

Spare: Order ahead · 2–3 days All keys lost: Not currently offered

A key blade plus lock and unlock buttons built into one plastic body. The most common key shape on the road today.

Bladed keys are cut to your vehicle’s specification, so this is booked ahead rather than done on the spot. Order today, programmed and in your hand in 2–3 days.
All keys lost for this key type is not currently offered. The dealer is the path when every bladed key is gone — get a spare while a working key still exists.

Smart proximity fob

Honest price range

Spare $250–375

All keys lost $375–550

Spare: Available now All keys lost: Available now

A fob with no blade. You keep it in your pocket and push a button to start. Push-to-start proximity keys are standard on most cars built after about 2014.

All keys lost: Yes, the largest jump. There is no blade to copy — the fob is paired to the vehicle through an encrypted programming session, and a PIN is often extracted first.

Laser-cut / sidewinder blade

Honest price range

Spare $175–250

All keys lost $300–450

Spare: Order ahead · 2–3 days All keys lost: Not currently offered

A thick blade with the cut milled into the side rather than the edge — the signature cut on many modern Honda, Lexus, and higher-trim keys. Often paired with a transponder or smart system.

Bladed keys are cut to your vehicle’s specification, so this is booked ahead rather than done on the spot. Order today, programmed and in your hand in 2–3 days.
All keys lost for this key type is not currently offered. The dealer is the path when every bladed key is gone — get a spare while a working key still exists.

Next step

Call now

Calls answered directly. Same-day service in most cases.

The price quoted on the phone is the price you pay. No bait-and-switch.