Transponder Keys Cut and Programmed On Site in Devon, Dorset and Somerset
Dean of DB Car Keys, the mobile auto locksmith from Honiton, cuts and programs transponder keys on site across Devon, Dorset and Somerset, reaches most addresses in 20 to 60 minutes and programs a key in 20 to 45 minutes.
A transponder key supplied, cut and programmed costs £100 to £280, with no call out fee. The blade is cut to the lock and the chip is programmed to the ECU of the vehicle, with no towing and no dealer booking.
Key turns and the engine stays off? Call the locksmith
A transponder key cut and programmed costs £100 to £280. Dean confirms the price for the make and the key on the call.
Dean has worked as a mobile auto locksmith since 2009 and is fully insured and DBS checked. 66 Google reviews rate DB Car Keys 5 stars, and the price is given before Dean travels.
Transponder Key Cost and Price Factors
A transponder key costs £100 to £280 supplied, cut and programmed by DB Car Keys, and the chip type and the vehicle make are the two main price factors. The table gives the price of transponder key replacement and of the five jobs that sit closest to it.
| Transponder key job | Price | What the price covers |
|---|---|---|
| Replacement transponder key, supplied, cut and programmed | £100 to £280 | The key blank, the blade cut to the lock and the chip programmed to the ECU. |
| Spare car key made with a working key present | £80 to £220 | A second key cut and programmed from the working key. The first key keeps working. |
| Key bought online or cut elsewhere, programming only | £30 to £200 | Car key programming on site for a key the driver already holds. A standard key with a remote costs £30 to £60 to program. |
| Lost car keys, new transponder key from the VIN | £150 to £400 or more | A new key made with no original key, and the lost keys disabled in the ECU. |
| Key fob repair | £40 to £100 | A repair of the circuit board, the buttons or the casing of a remote key fob. |
| Immobiliser diagnostics | Quoted by phone | Fault finding on a car that does not start with a programmed key, 45 to 90 minutes of work. |
Three factors set the price of a transponder key.
The quote covers travel, the key and the programming in one figure, and Dean gives the price before travel, with no call out fee. Workmanship carries a 30 day guarantee, and payment is taken on completion by cash, by bank transfer or by card where card payment is available.
A Transponder Key and the Immobiliser
A transponder key is a car key with a small encrypted microchip in the plastic head, and the immobiliser lets the engine start only when the chip sends the correct code to the ECU. The transponder chip sends a coded radio signal when the key is in the ignition. The chip holds no battery, because an aerial ring around the ignition barrel powers the chip by radio frequency identification (RFID). With no correct signal, the immobiliser blocks the fuel supply, and the engine cranks and does not fire.
A key cut to the right blade profile at a market stall, or a spare key bought online that fits the ignition, gets the driver into the car and turns the barrel, and the engine does not start without programming. UK vehicles have required transponder immobiliser systems since 1998, and the vast majority of cars on the road use a transponder car key, also called a chip key. A plain metal key with no chip is a non transponder key and starts older vehicles only. DB Car Keys cuts the blade and programs the chip in one visit, and car key programming on site covers a key the driver already holds.
📍 Real call out, Exeter and Somerset
"This is our most seen call out pattern across Devon and Somerset. A driver orders a replacement or spare key online, takes it to a key cutting stall or small locksmith to have the blade cut, and is surprised when inserting it does not start the car. The blade is perfect, and the transponder chip was never programmed to the vehicle ECU. We connect the programming equipment, code the chip in around 20 minutes, and that is the job done."
📍 Real call out, Vauxhall owner, Taunton
"A Vauxhall owner in Taunton had his car in for a service at an independent garage, with the battery disconnected as part of the work. Afterwards, one of his two keys would no longer start the car. The other key was fine. The second key had been purchased as a spare and never fully coded to the ECU. The battery disconnection reset a parameter that exposed the issue. Fifteen minutes on the programming equipment fixed it on his driveway."
⏱ Eight times a transponder key needs programming
How a Transponder Key Is Cut and Programmed
A transponder key is cut and programmed at the vehicle in five steps, and the programming takes 20 to 45 minutes. Transponder key programming on a Ford, a Vauxhall or a Peugeot takes 20 to 30 minutes, and encrypted keys on BMW and VW Group vehicles take 30 to 45 minutes.
- Call 07830249408 with four details. Give the make, the model, the year and the registration. Dean gives the price and a time estimate before travel.
- Identity and ownership are verified. Dean verifies the identity of the driver and the ownership of the vehicle before a key is made.
- The blade is cut. The key blank is cut to the lock profile at the vehicle, from the working key or with no original key.
- The chip is programmed. A fixed code chip is cloned from a working key. An encrypted chip is programmed to the ECU through the diagnostic port, which takes 20 to 45 minutes.
- The key is tested and lost keys are disabled. The new key starts the engine at the car. Lost keys are disabled in the ECU on request, and the keys still in use keep working.
Transponder Key, Remote Key and Key Fob Compared
A transponder key, a remote key and a key fob compared on three points differ in what each key does, how each key is programmed and what each key costs. The table adds the non transponder key, the one key type with no chip, so every car key replacement is matched to its key type.
| Key type | What the key does | How the key is programmed | Price with DB Car Keys |
|---|---|---|---|
| Transponder key | A chip in the head lets the engine start. The chip needs no battery. | The chip is programmed to the ECU through the diagnostic port, or cloned from a working key on a fixed code system. | £100 to £280 supplied, cut and programmed |
| Remote key or flip key | Buttons lock and unlock the doors by radio. The head holds a transponder chip too. | The remote is programmed to the central locking, and the chip is programmed to the ECU. | £30 to £60 to program a standard key with a remote |
| Key fob or smart key | Keyless entry and push button start. A transponder inside the fob authorises the engine. | The fob is paired to the car with access beyond the standard diagnostic port routine. | £80 to £150 to program a smart key |
| Non transponder key | A metal key with no chip. The key works the locks and the ignition of older vehicles. | The blade is cut, and no programming is involved. | Quoted by phone |
One call names the key type from the registration, across Devon, Dorset and Somerset.
Six Transponder Key Types Cut and Programmed
The six transponder key types cut and programmed on site cover every transponder system in use on UK roads.
Fixed Code Transponder
A fixed code transponder sends one static signal that the ECU validates on each start. Vehicles from the late 1990s and the early 2000s use fixed code chips. A fixed code chip is simpler to program and still takes the correct equipment and key blank. Fixed code chips are very common on early Ford, Vauxhall and Peugeot models.
Encrypted Rolling Code Transponder
An encrypted rolling code transponder generates a unique challenge and response exchange between the key chip and the ECU on each start, which is far harder to duplicate. Most vehicles made after 2005 use encrypted chips, and programming takes advanced access through the diagnostic port.
ID46, PCF7946 and PCF7947 Chips
The PCF chip family, known as ID46, is used across a wide range of European vehicles. ID46 chips are very common across Devon, Dorset and Somerset, given the popularity of French and German makes. The chips take specific programming access, and the equipment covers most applications.
ID48 and ID63 Chips
ID48 and ID63 chips are used across the VW Group range, on Volkswagen, Audi, Seat and Skoda. Programming takes diagnostic port access plus additional authentication, a job that stops many general locksmiths and is routine for DB Car Keys.
Crypto Transponder, 40 Bit and 128 Bit
The crypto transponder is used by Ford, the most common programming call out, and by BMW across many years and models. The chip exists in 40 bit and 128 bit versions, and each version takes a specific programming sequence that the equipment handles.
Smart Key and Proximity Transponder
A smart key combines a proximity sensor for keyless entry with an embedded transponder that authorises the engine. A push button start vehicle talks to the key by low frequency radio, and programming takes access beyond the standard diagnostic port routine. Most common makes are supported.
The chip type is confirmed from the registration on the call, and the quote is free.
Transponder Key Work at the Vehicle
Transponder key work at the vehicle in three figures.
Transponder Keys for Cars and Vans
Transponder keys are cut and programmed for the cars and the vans seen most often across Devon, Dorset and Somerset.
Ford is by far the most common transponder key call out, the Fiesta and the Focus most of all across Exeter, Plymouth and Taunton.
Ford Transit transponder programming is the most frequent commercial van call out, around Marsh Barton in Exeter and the industrial zones of Plymouth most of all.
Recent Transponder Key Callouts
Six recent transponder key callouts across Devon, Dorset and Somerset, each with its programming time.
Ford Focus, spare key bought online programmed to the ECU
Vauxhall Astra, spare key coded again after battery work
VW Golf, replacement key programmed with no original
Peugeot 208, lost key, new transponder key from the VIN
Toyota Yaris, spare key coded after an ECU remap
Ford Transit Custom, second transponder key added
The list of transponder key jobs is updated regularly. Call 07830249408 for an arrival time at any address.
Dean, DB Car Keys
Mobile Auto Locksmith, Honiton, Devon
Dean is the car locksmith who answers the phone, cuts the blade and programs the chip. Dean is fully insured and DBS checked, and has cut and programmed transponder keys across Devon, Dorset and Somerset for over 15 years.
Dean on Transponder Key Jobs
Three points on transponder key jobs in the first person, as Dean and DB Car Keys state them.
On copying a key
“For older fixed code chips, on vehicles made before 2005, we can clone an existing key to a blank chip. For modern encrypted rolling code systems, cloning is not possible because each transaction generates a unique code. Instead, we program a new key directly to the vehicle ECU.”
On a key with no original
“Using your vehicle VIN and our diagnostic equipment, we can program a completely new transponder key without any original key. This is standard for lost key jobs. We verify your identity and vehicle ownership first.”
On the time
“Most transponder key programming jobs take 20 to 45 minutes once we arrive. We give you an accurate time estimate when you call, before we arrive.”
What DB Car Keys Customers Say
Verified Google reviews from transponder key and car key customers across Devon, Dorset and Somerset.
Car Makes Covered for Transponder Keys
Transponder key blanks and programming software cover the vehicle makes on UK roads.
Is the make not listed? Call 07830249408 with the registration, and Dean confirms the make on the phone.
Transponder Key Areas in Three Counties
Transponder key cutting and programming reaches every area of Devon, Dorset and Somerset.
EX, PL and TQ postcodes, from the industrial estates of Exeter to rural Dartmoor.
DT postcodes, including the Jurassic Coast and rural West Dorset.
TA and BA postcodes, including the Glastonbury area, the A303 corridor and the Somerset Levels.
Call 07830249408 for a transponder key in EX, PL, TQ, DT, TA and BA postcodes.
Transponder Keys FAQs
Seventeen common questions about transponder keys, with the answers.