Lost the only fob? Pressed the buttons and nothing happens? Replacement fob from the dealer takes a week? We replace and program car key fobs on site in Fort Worth for most makes and models — usually in a single visit.
Modern car key fobs are not just remotes — most contain a transponder chip that the vehicle's immobilizer must recognize before it will start. Replacing a fob means cutting the right blade (or programming a proximity smart fob), pairing the chip to your specific car, and confirming all functions. Our mobile auto locksmith team handles all of that in your driveway, parking lot, or wherever your car is parked.
Pricing as of September 2026: a smart proximity fob runs $220 – $450 and a remote head key $160 – $260, programming included; add $50 – $200 if no working key exists. Before you replace anything, it is worth ruling out the cheap causes — a fob that works up close but not across a parking lot is usually a coin cell, and if both your fobs are unreliable the problem is normally the car's 12-volt battery rather than the keys. Our diagnosis guide for a key fob that works sometimes and then doesn't walks the tests in order, and what happens in your driveway covers the appointment itself minute by minute.
Where you land inside those ranges is mostly a question of where the fob itself comes from. Our breakdown of key fob replacement cost by sourcing route compares OEM, refurbished, aftermarket and programming-only, including the used fobs that can never be paired to a second vehicle no matter who programs them. And if the fob only misbehaves on hot afternoons, start with heat-related no-starts before buying anything.
We replace and program key fobs for the most common car brands on the road in Fort Worth, including:
Yes. A qualified mobile auto locksmith can supply a new fob, cut the blade if needed, and program it to your vehicle on site. We do this every day in Fort Worth.
No. We are fully mobile. Our technician comes to your vehicle wherever it is parked in Fort Worth and replaces the fob there.
In most cases, yes. We can pair a new fob to your vehicle even when no working key is available, and we delete the old fob from the system so it can no longer start the car.
Most fob programming is completed within the same visit. The exact time depends on the vehicle make, model year, and security system.
Call now for fast mobile service for car lockouts, lost keys, car key replacement, key fob programming, and ignition help.
Fast mobile service across Fort Worth and nearby areas.