
Transponder Programming
Lost a chipped key or need a spare? We programme transponder and smart keys on-site.
07728 036640 — Call NowA transponder key won't start your car unless its chip is programmed to your immobiliser. Dragon Auto Locksmith Ltd programmes transponder and smart keys on-site — spares, replacements, or a full new set when all keys are lost — using dealer-level diagnostic equipment, usually the same day, across the Carmarthen to Cardiff corridor. No dealer visit needed.
The Problem
A transponder key has a microchip that talks to your car's immobiliser. Without the correct chip being recognised, turning the key does nothing — the engine won't fire, and the immobiliser light stays on. If you've lost the only key that was programmed, your car is going nowhere. A main dealer can programme a new one, but they'll charge handsomely, keep your car for days, and expect it delivered to them on a trailer.
How We Fix It
We programme transponder and smart keys on-site, wherever your vehicle is parked. Our equipment reads the immobiliser directly, pairs the new key's chip to it, and clears any fault codes that are blocking the start — all without a dealer visit. If you've lost every key, we can programme a complete new set from scratch and erase the lost ones from the system so they can never start the car again. Whether it's a basic transponder or a push-button smart key, we handle it at the roadside.
- ✓Latest programming equipment
- ✓Smart keys and push-button start
- ✓Immobiliser faults cleared
- ✓Dealer-level diagnostics
- ✓Spares, replacements, all-keys-lost
- ✓Lost keys erased from system

How It Works
How Dragon Auto Locksmith Ltd programmes a transponder or smart key on-site.
Call us
Tell us your vehicle details and what you need — a spare, a replacement, or a full new set. We'll give you an honest ETA and a fixed price.
We arrive
We come to you with the latest programming and cloning equipment on board, plus dealer-level diagnostics.
Key programmed on-site
We programme the transponder or smart key to your vehicle, clear any immobiliser faults, test it works, and have you mobile again.
Clear, Upfront Quotes — No Surprises
Transponder programming costs vary with the vehicle, the key type, and how many keys you need. A straightforward spare is cheaper than a full all-keys-lost job; a push-button smart key costs more than a basic transponder. We'll give you a fixed, upfront quote when you call — covering the key, the cutting, and the programming — with no call-out fee and no add-ons once it's done.
- ✓Fixed quote on the phone before we set off
- ✓No call-out fee
- ✓No surprise charges once the job's done
- ✓Receipt provided for insurance claims
Frequently Asked Questions
Straight answers before you book.
Vehicles We Cover
Trained across a wide range of makes and models — if you drive it, we can most likely open it.
Not on the list? Call us anyway — we cover most makes and models.
Transponder Programming Across South Wales
We respond to calls across the M4 corridor and surrounding areas — tap your town for local transponder programming details.
Other Auto Locksmith Services
Whatever the problem, we can most likely sort it at the roadside.
Locked out right now?
Call us directly for emergencies, or use our chat bot in the bottom right corner for an instant quote on non-urgent jobs.
07728 036640