Illustration of aSmart key (Proximity key) used in push-to-start vehicles.

PROXIMITY KEYS

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Proximity / Smart Keys (Push‑to‑Start)

Proximity keys – also called smart keys or push‑to‑start keys – are the fobs you can leave in your pocket or bag while you touch the door handle and press the START button. The car senses the key nearby, checks the codes, and only then lets the doors unlock and the engine start.

What a proximity / smart key is

A proximity key typically:

  • Unlocks and locks the doors when you touch the handle or press a button

  • Lets you start the car with a START/STOP button instead of turning a metal key

  • Often has buttons for lock, unlock, trunk, and panic (and sometimes remote start)

Inside the fob is a chip and radio system that talks to your car’s computer. If everything matches, the car runs. If it does not, the push‑button stays dead no matter how many times you press it.

What we can do with proximity keys

For most common makes and models, we can:

  • Replace a lost or stolen proximity / smart key

  • Add an extra key for a second driver

  • Replace a damaged or unreliable fob

  • Cut and program the hidden emergency blade (the metal key inside the fob)

Everything is done at your vehicle. There is no need to tow the car to a dealer just because it uses a push‑to‑start system.

Why use a locksmith instead of a dealer

Proximity keys are the most expensive keys on the car. Dealers often charge several hundred dollars for a single smart key, and if the car will not start, they will usually want it towed in first. A mobile automotive locksmith can normally:

  • Supply and program a compatible proximity key at your vehicle

  • Save a significant amount compared to dealer pricing

  • Get you back on the road without adding a tow bill and shop wait

When to call

Proximity / smart key help is for you if:

  • Your push‑to‑start car only has one working smart key and you want a spare

  • You have lost the only key and the car will not start

  • The key is cracked, water‑damaged, or only works when you hold it “just right”

  • You want a second key for another driver before the first one fails

If you are not sure whether you have a proximity / smart key or another type of key, look at the pictures on this page or just tell us the year, make, and model of your vehicle and how you start it (turn a key or push a button).