How Do Auto Locksmiths Program Car Keys?
An auto locksmith programs a car key by connecting a key programmer to the OBD port and pairing the transponder chip in the new key with the immobiliser of the car. The job takes 10 to 30 minutes with a working key and costs £30 to £200. Cutting the blade is half the job, since the car also has to recognise the chip inside the key.
Key Programming Method Finder
Pick the key type.
A spare is cloned from the working key or added through the OBD port. The job takes 10 to 20 minutes.
The chip is programmed through the OBD port, then the remote buttons are paired to the central locking.
A flip key follows the remote key method. The blade is cut first, then the chip and the remote are programmed.
A smart key is paired through the OBD port with security access. There is no cloning route for a smart key.
A key card is programmed with make specific equipment through the OBD port.
The lock is decoded, a blade is cut and a new key is programmed. Lost keys are deleted from the memory of the car.
Not sure which key you have? Call 07830249408 and Dean identifies it from the registration.
What Is Car Key Programming?
Car key programming is the pairing of the transponder chip inside a car key with the immobiliser of the vehicle. Car key programming stores the identity of the new key in the memory of the car, so the immobiliser lets the engine start. The purpose of car key programming is security, since a key with an unknown chip turns the lock and the engine stays dead.
A programmed car key does 3 things. The blade turns the lock, the chip disarms the immobiliser, and the remote operates the central locking where the key has buttons. A key that fails 1 of the 3 opens the door and does not start the car, or starts the car and does not lock it.
How Do Auto Locksmiths Make a Car Key?
Auto locksmiths make a car key in 3 stages, which are identifying the key, cutting the blade and programming the chip. The key type, the chip, the frequency and the blade profile are identified from the registration and the vehicle. The blade is cut on a key cutting machine from a working key, from the key code or from a decoded door lock.
The third stage is car key programming, which pairs the chip and the remote with the car. The whole job is completed at the vehicle from a mobile workshop.
Which 4 Methods Program a Car Key?
Four methods program a car key, and the vehicle decides the method. The table gives each method, how it works and the job it suits.
| Method | How it works | Used for |
|---|---|---|
| OBD programming | A key programmer on the OBD port adds the new key to the immobiliser | Most spare keys, remote keys and smart keys |
| Transponder cloning | A working key is copied to a new chip, with no link to the car | A fast spare for a key with a clonable chip |
| EEPROM programming | The immobiliser memory chip is read on the bench and the key is written in | All keys lost on vehicles with no OBD route |
| Online coding | Security data is calculated through a manufacturer server | Newer prestige vehicles with locked security |
OBD programming is the most common of the 4 methods. Car key programming for a Ford remote key, a BMW proximity fob, a Vauxhall transponder key and a Renault key card takes different preparation, security access and testing, so the method is confirmed before the work starts.
Which 5 Steps Program a New Car Key?
Five steps program a new car key at the vehicle. The steps describe OBD programming, the method used on most cars.
- Identify the key. The locksmith confirms the chip type, the frequency and the blade profile from the make, the model, the year and the registration.
- Check the vehicle. The battery voltage is checked and supported, and the immobiliser light and the communication with the ECU are tested.
- Cut the blade. The blade or the emergency blade is cut and tried in the door lock and the ignition.
- Program the key. The key programmer connects to the OBD port, gains security access with the PIN of the vehicle and adds the new key to the immobiliser.
- Test the key. Locking, unlocking, starting and the remote functions are tested, and lost keys are deleted from the memory.
Do not keep cycling the ignition with an unprogrammed key before the visit. Repeated failed attempts trigger an immobiliser lockout on some vehicles, and the lockout delays the programming of the correct key.
What Equipment and Software Do Auto Locksmiths Use?
Auto locksmiths use 6 pieces of equipment and software to program car keys. DB Car Keys carries all 6 in the van.
- Key programmer. A diagnostic tablet that talks to the immobiliser through the OBD port. DB Car Keys uses AUTEL diagnostic equipment.
- Key programming tool. A tool that reads, clones and prepares transponder chips and remotes. DB Car Keys uses Xhorse key programming tools.
- Auto locksmith software. The vehicle software on the key programmer, which holds the programming routine for each make, model and year and is updated by subscription.
- Car key database. A car key programming database that lists the chip, the frequency, the blade profile and the key code series for each vehicle.
- Key cutting machine. A car key cutting machine that cuts standard blades and laser cut blades to code.
- EEPROM reader. A bench tool that reads the memory chip of an immobiliser when the OBD route is closed.
The equipment explains the price of car key programming. Key blanks, remote fobs and smart keys for common UK vehicles travel in the van with the 6 tools.
Frequently Asked Questions About Car Key Programming
What Do You Need to Program a Car Key?
You need 5 things to program a car key. The 5 things are a key with the correct chip and frequency, a key programmer, the security access of the vehicle, a healthy car battery and proof of ownership.
How Long Does It Take to Program a Car Key?
It takes 10 to 30 minutes to program a car key when a working key is present. A job with every key lost takes about 1 hour on most cars. A prestige vehicle that takes online coding takes longer.
How Much Does Car Key Programming Cost?
Car key programming costs £30 to £200 in the UK. The price depends on the make, the model, the key type and whether a working key is present. The guide on how much to reprogram a car key gives the price by make and by key type.
How Do Locksmiths Program Key Fobs?
Locksmiths program key fobs in 2 parts. The transponder chip is added to the immobiliser through the OBD port, and the remote buttons are then paired to the central locking. A working key fob that stops after a new battery takes a resync, and the guide on how to reprogram a key fob after a battery change gives the steps.
How Do You Program a Car Key With the Original?
Program a car key with the original by cloning the working key or by adding a new key through the OBD port. The original key gives the chip data and the blade pattern, so the job is the fastest type of programming. Spare car keys are cut and programmed from the original at your location.
How Do Auto Locksmiths Get Into Cars?
Auto locksmiths get into cars with non destructive entry tools, which are a lock pick with a decoder, an air wedge and a long reach tool. The door lock is turned in the same way as the key. The guide on how to unlock a car door without a key rates each method.
What Does Immobiliser Active Mean?
Immobiliser active means that the car has not recognised the chip in the key, so the engine is blocked. The cause is an unprogrammed key, a damaged chip or a fault in the immobiliser. Immobiliser diagnostics reads the fault at the car.
How Do I Get Help Now?
Get help now by calling 07830 249408 or by sending a WhatsApp message with your location, registration, make, model and the problem. Dean confirms the next step and gives a clear quote before attending.
Which Vehicle Makes Are Covered?
All major UK vehicle makes are covered, including Ford, Vauxhall, BMW, Audi, Volkswagen, Mercedes, Peugeot, Citroen, Toyota, Nissan, Renault, Kia, Hyundai, Honda and Land Rover.
Can You Program a Car Key Yourself?
No, most cars built after 2005 take diagnostic equipment to program a key. A small number of older cars accept a new key through a sequence with 2 working keys. A key bought online with the wrong chip or frequency does not program on any equipment.
Do Car Keys Need to Be Programmed?
Yes, every car key with a transponder chip is programmed to the car. Nearly every UK car built since 1998 has an immobiliser, and the immobiliser starts the engine only for a key stored in its memory.
Do I Need a Mobile Auto Locksmith for Car Key Programming?
Yes, in most cases. A mobile auto locksmith is the practical option when the vehicle does not move, the key is missing or the immobiliser does not recognise the key. DB Car Keys attends your location across Devon, Dorset and Somerset and advises before travel.
Can DB Car Keys Help With Car Key Programming?
Yes. DB Car Keys provides car key programming as part of its specialist mobile auto locksmith service.
Is the Job Done at My Location?
Yes, in most cases. The mobile van carries specialist key cutting, programming and diagnostic equipment, so the work is completed at a home, a workplace, a roadside location or a car park.
Do I Need Proof of Ownership?
Yes, you need proof of ownership for replacement keys and programming work. The proof shows that the vehicle is yours or that you have permission to authorise the work, and the check protects customers and vehicle security.
Can Old Lost Keys Be Deleted?
Yes, old lost keys are deleted from the vehicle memory on many vehicles during the replacement process. Deletion matters most when a key was stolen and not simply misplaced.
Is It Cheaper Than Going to a Main Dealer?
A mobile auto locksmith is often faster and more convenient than a main dealer, since the vehicle does not usually require recovery or a booking days ahead. The exact price depends on the vehicle and the key type.
How Do Locksmiths Program Car Keys?
Locksmiths program car keys by connecting a key programmer to the OBD port and adding the chip of the new key to the immobiliser. Cloning, EEPROM programming and online coding are the 3 other methods. Auto locksmiths program car keys at the vehicle, and the key is tested before the job is closed.
DB Car Keys covers Devon, Dorset and Somerset, including Exeter, Plymouth, Taunton, Yeovil, Weymouth, Dorchester and Honiton.
Typical key programming calls include a Ford Transit spare key for a tradesperson, a BMW key programmed after every key was lost, an Audi remote fob that stopped communicating, a Renault key card fault and a Land Rover proximity fob replaced on a rural property.
Dean answers in plain words
Is programming just plugging a tablet in?
No. The plug in part takes minutes. Knowing which chip, which method and which security route your car takes is the job.
Why did the key I bought online not program?
Nine times out of ten the chip or the frequency is wrong. The fob looks right and the car ignores it.
Do you wipe the lost key off the car?
Yes, where the car allows it. I tell you how many keys are stored before I leave.
A cut key with an unprogrammed chip does not start the car. DB Car Keys attends homes, workplaces, roadside locations and car parks across Devon, Dorset and Somerset. Call with your make, model, registration and location for a clear quote.