Can a Locksmith Program a Push to Start Key Fob?

Published October 17, 2026

By Mike German

This is one of the most common questions we hear on car key calls across the valley, so here is the short version before the details.

• Short answerYes, we program smart fobs at the vehicle for most makes and models.
• Easiest caseYou still have one working fob, and we simply add a spare.
• Hardest caseEvery fob is lost, so new fobs are programmed from the beginning.
• Bring every fobSome procedures erase the existing fobs, so keep them all with the vehicle.
• The vehicle must runA dead battery or broken ignition has to be repaired first.
• Price firstSmart fobs cost more than basic keys, and you hear the price before we drive out.

What Programming a Fob Actually Does

Every push to start fob contains a chip with its own electronic code. The vehicle keeps a list of the fobs it recognizes, and it will only start when one of those fobs is inside the cabin, so programming is the step where we add a new fob to that list.

That explains why a replacement fob straight off the shelf does nothing by itself. KeyMe makes the same point in its own guide, noting that most push to start vehicles generally require professional programming. Cutting the small emergency blade inside the fob is the easy part. Programming is what makes the vehicle accept the fob.

The chart below sorts six situations we encounter constantly by what the visit will probably involve.

What the Procedure Looks Like on a GM Vehicle

GM vehicles make a useful example because we service so many of them. A common GM keyless start procedure, published by YOUCANIC for most 2015 and newer Buick, Chevy and Cadillac models, begins with the emergency key inserted in the driver door lock.

From there, the technician presses START/STOP and waits ten minutes, three separate times, then waits another thirty minutes before the vehicle is ready to learn fobs. That same guide says the existing remotes are erased at that point, so every fob you want to keep has to be programmed again during the same session.

That is why we ask you to bring every working fob to the vehicle. A fob that stays at home may stop working after the visit, which would mean a second appointment just to add it back.

Newer Trucks Can Take Longer

General Motors keeps adding security to these procedures. A GM bulletin dated November 14, 2024, covering the 2025 Escalade, Tahoe, Suburban and Yukon, says some fob programming events now include a two hour timer.

The same bulletin warns that the vehicle can go to sleep during that timer, which causes the programming to fail, so the technician has to remain with the vehicle and press the brake pedal every 12 minutes until the countdown finishes. If you drive a newer GM truck, plan for a longer appointment rather than a quick stop.

None of this means the job requires a dealership. It means the visit should be planned around the specific vehicle you own, which is exactly why we ask for the year, make and model first.

When the Vehicle Itself Is the Problem

Programming only works when the vehicle can operate its own start system. A weak or dead battery, a failing start button or a broken ignition can interrupt a fob procedure partway through.

We ran into exactly this situation on a 2022 Escalade new key job. The ignition was broken, so a mobile mechanic repaired it at the vehicle before we could finish the key. If your vehicle will not power on at all, mention it on the phone so we can plan the visit accordingly.

If your fob only works occasionally, try installing a fresh battery before you purchase anything, because a weak fob battery is one of the least expensive problems to rule out.

What to Have Ready Before You Call

A few details allow us to quote the job over the phone and bring the correct fob. Have the year, make and model ready, along with the vehicle identification number if you can locate it, the number of working fobs you still have, and the location where the vehicle is parked.

If you purchased a fob online, tell us the part number. A fob from another seller can work, but only when it is the correct part for your particular vehicle, so we verify it before we drive out.

Smart fobs cost more than basic keys because of the electronics inside them, and our locksmith cost guide explains how automotive keys are priced. You can also look up your brand on our car key page.

Questions We Get Asked

Need a push to start fob? See smart keys and fobs, car keys by brand and what to do with no spare key, or call (725) 280‑5051 any hour with your year, make and model, and we will give you the price before we drive out.

Sources

• YOUCANIC, Key Fob Programming Instructions for Buick, Chevy, Cadillac (updated November 30, 2023)
• General Motors, Bulletin PIT6284, Key Fob Learn Fails (November 14, 2024)
• KeyMe, How to Program a New Key Fob