Coded Vehicle Keys
From £85Specialist coded vehicle key service for all modern cars. We cut the key and programme the code to your vehicle on the spot — no dealer required.
Learn MoreCar Immobiliser Programming — On-Site Across the North West
Your car won't start because the immobiliser doesn't recognise the key — we fix that on the spot.
Your car cranks but won't start, the immobiliser light is flashing, and you've been told it needs dealer programming. Before you pay dealer prices, call us.
From £85 45–120 minutes on-site 24/7, including bank holidays
Call 07831 872 740 — Available NowImmobiliser Programming — Full Service Details
Every modern vehicle sold in the UK since 1998 is legally required to have an electronic immobiliser fitted. The immobiliser works by communicating with a transponder chip embedded in your ignition key — if the key isn't recognised, the engine management system refuses to allow the car to start. While this is excellent anti-theft technology, it also means that any key-related issue — a new key, a faulty transponder, or after-market key fitting — requires the immobiliser to be re-programmed to recognise the new key or reset to accept a replacement. This is exactly what Excalibur specialises in.
The main dealer charges a significant premium for immobiliser programming because it requires specialist software and licensing agreements. For many drivers, this is the largest unexpected expense after a key loss. Worse, dealers often insist on towing the vehicle to their workshop before even starting the diagnostic process. The truth is that immobiliser programming can be done at the roadside or on your driveway with the right equipment — the same dealer-grade software and OBD interface that we carry in Excalibur's mobile workshop every day.
Ian and Adam use manufacturer-level diagnostic tools to communicate directly with your vehicle's ECU via the OBD-II port. For lost key situations, we write a new key to the immobiliser and delete the old key from its memory — meaning no one with the lost key can start your vehicle. For vehicles where the immobiliser has developed a fault or failed to recognise an existing key, we run a full diagnostic, identify the cause, and reprogram accordingly. We cover all major platforms including VAG (VW, Audi, SEAT, Škoda), Ford, GM/Vauxhall, BMW, Mercedes-Benz, Renault, and many more.
Excalibur's 30-year track record in automotive locksmithing means Ian and Adam have encountered — and solved — virtually every immobiliser scenario imaginable. From a straightforward key-to-ECU sync to complex situations involving after-market alarm upgrades or ECU replacements, we approach each job methodically. Our pricing is consistent and transparent: we quote before we start, and we don't charge extra for the complexity of the programming process. Across the North West — from Wigan and St Helens to Liverpool and Bolton — drivers trust Excalibur to get the electronics right.
How We Do It — At Your Location
Diagnostic Scan
We connect our dealer-grade diagnostic tool to your vehicle's OBD-II port and pull any fault codes related to the immobiliser or key recognition system.
Identify the Programming Requirement
Based on the diagnostic, we determine whether we need to add a new key to the immobiliser memory, delete lost keys, or perform a full immobiliser reset/reprogram.
Programme the New Key
Using the appropriate manufacturer-specific protocol, we write the new key's transponder data to the ECU, synchronising the key and the immobiliser.
Delete Lost or Stolen Keys
If any previous keys have been lost or stolen, we delete them from the immobiliser memory as part of the same process, restoring full vehicle security.
Confirm Engine Start and Lock Function
We test the new key in the ignition and confirm the engine starts cleanly without the immobiliser light illuminating. Full function test completed before handover.
Vehicle & Key Compatibility
Compatible Vehicle Types
- All passenger cars
- Light commercial vehicles
- Vans (Ford Transit, VW Transporter, etc.)
- SUVs and 4×4s
- Classic vehicles with retro-fit immobilisers
Key Types We Handle
- Transponder Key
- Remote Key Fob
- Smart Key / Proximity Key
- Key Card (Renault)
- Rolling Code Remote Keys
How Much Does Immobiliser Programming Cost?
The cost of immobiliser programming depends on your vehicle's make, model, and the specific key type required. Excalibur is consistently 40–60% cheaper than main dealer pricing because we don't carry dealer overheads, and we use quality compatible components rather than OEM parts at manufacturer prices.
From £85
All-inclusive pricing
Cutting, programming, and call-out included
We will always provide a firm quote before starting any work. Call 07831 872 740 for your exact price — it takes 2 minutes.
Immobiliser Programming — Frequently Asked Questions
Not always, but it's a strong indicator. The clearest sign of an immobiliser issue is the engine attempting to start and immediately cutting out, combined with the immobiliser warning light (usually a padlock symbol or car outline with a key) remaining illuminated or flashing. If the car cranks but doesn't fire and you see that warning light, call us — we can diagnose and programme on-site.
In many cases, yes — though the success depends on whether the aftermarket blank uses a compatible transponder chip. Some cheaper online blanks use inferior chips that can't be reliably programmed. We will always check the blank before attempting to programme it and advise you honestly. If the blank isn't suitable, we carry our own quality blanks and can source the correct one quickly.
No. All immobiliser programming is done at your location using our mobile workshop's diagnostic equipment. The only requirement is that we need access to the OBD-II port inside the vehicle, which is typically located under the dashboard on the driver's side. No towing, no workshop visit, no delay.
As part of the programming process, we delete all lost or stolen keys from the immobiliser memory. This means that even if someone finds your old key, it will not start the vehicle. The new key you receive will be the only one recognised by your car's immobiliser, restoring complete security.
Yes, virtually all vehicles manufactured since 1998 require transponder programming for any new key to start the engine. Even if a key is correctly cut and physically fits the ignition, without the correct transponder programming the immobiliser will prevent the engine from running. This is a non-negotiable step that any legitimate automotive locksmith must complete.
Related Services
Lost Vehicle Key Replacement
From £95We replace lost vehicle keys for all makes and models at your location. Cut, coded and programmed on the spot — often within the hour.
Learn MoreKeyless Entry Keys
From £150Replacement keyless entry and smart key programming for all makes and models. Push-button start, proximity detection, and remote functions — all programmed on-site.
Learn MoreNeed Immobiliser Programming Right Now?
Don't call a tow truck. Call Ian or Adam first — we come to you.
07831 872 740