Service

Spare Car Keys | Mobile Key Cutting & Programming

Only have one car key? We cut and program a spare at your home or workplace, usually in under an hour, so losing a key never becomes an emergency.

  • 6+ years' experience
  • Dealer-level programming equipment
  • Fully mobile service
  • Planned appointments at a time that suits you
  • Cars, vans and smart keys
Six years of specialist auto locksmith experience
New Volvo key held with an Auto Locksmith Eastleigh business card in front of a red Volvo XC40 in Hedge End
Mobile help at the vehicle
Vehicle-specific checks first
  • AVG Same Day Service
  • DBS Checked
  • 5★ Reviews

Not A National Company

A local business, not a call centre.

Real Local Professionals

Locals, not technicians sent by a middle-man company.

No Inflated Pricing

National companies often mark prices up 2–3x. We don't.

Deal Direct With The Technician

No wondering who or when. It's always us.

Spare keys

Need A Spare Car Key? Get One Made At Your Vehicle

A spare car key is a second working key, cut to your locks and programmed to your vehicle's immobiliser. We make them at your vehicle while your original still works, which keeps the job straightforward and far less stressful than replacing a key once it's gone.

Plenty of cars are sold second-hand with just one key, and others lose their spare over the years without anyone noticing. Either way, a single key is a single point of failure.

Auto locksmith handing a customer a newly programmed spare car key on their driveway

Why Get A Second Key While You Still Have A Working One?

Having a working key means we can copy its blade profile and add a new key to the vehicle with no need to decode locks or open a locked car. It's usually quicker and more affordable than replacing a key after it has been lost.

It also means that if your key does go missing, you simply reach for the spare, rather than arranging an urgent callout. If you're already down to no working keys, see Lost Car Keys.

Can A Mobile Auto Locksmith Cut A Spare Key At Your Location?

Yes. We carry key cutting machines, blanks, remote fobs, smart keys and programming equipment in the van, so your spare is cut, programmed and tested at your home or workplace. There's no need to visit a dealer or leave the car anywhere.

Because a spare isn't an emergency, you can book a time that suits you.

The method

How Is A Spare Car Key Cut & Programmed?

A spare car key is made by cutting a blade that matches your existing key, then authorising the new key with the vehicle's immobiliser and pairing any remote or keyless functions. The exact method varies significantly between manufacturers and key systems.

01

Reading & Cutting The Correct Mechanical Key Profile

We read the cuts from your existing key and reproduce them on the correct blank, whether that's a standard edge-cut blade or a high-security laser-cut profile.

Even smart keys usually contain a hidden emergency blade, which we cut so you can still open the door if the fob battery dies.

02

Programming The Transponder To Your Immobiliser

The immobiliser keeps a list of authorised keys, and the new key must be added to that list before it will start the engine.

On many vehicles we do this through the OBD diagnostic port. Some makes, such as Ford and Vauxhall, need a security PIN code, which our equipment can retrieve. Others use an onboard learning procedure that works when a working key is present. On certain premium vehicles, such as BMWs with a CAS, FEM or BDC module, we prepare the new key using data read from the vehicle's security module.

03

Pairing Remote Buttons & Keyless Functions

The remote locking buttons are often paired separately from the transponder, so we synchronise them to the vehicle as a distinct step.

For keyless systems, such as the KESSY system on many Volkswagen group vehicles, the proximity function also has to be adapted to the car. We test entry, locking and push-button start before we finish.

04

What's The Difference Between Cloning A Key & Programming A New One?

A cloned key copies the transponder data from your existing key, so the car sees both as the same key. A programmed key is a new, separately authorised key added to the vehicle's key list.

Cloning is possible on some vehicles and can be a quick, cost-effective option, but it isn't available for every system, and it isn't always the best choice. Because a clone shares the original's identity, it can't be removed individually if one key is later lost. Programming a separate key avoids that. We'll recommend the right method for your vehicle and explain why.

Fully equipped mobile auto locksmith van with key cutting machine
Key types

Spare Keys For Cars, Vans & Modern Key Systems

We make spare keys for everything from basic transponder keys to keyless smart keys, for both cars and vans.

Duplicate Remote Keys For Everyday Use. A duplicate remote key gives you a second fob that locks, unlocks and starts the vehicle exactly like the original. This is the most common spare we make. Both the remote buttons and the transponder chip are set up, so the spare works identically.

Spare Transponder Keys For Cars & Vans. A spare transponder key contains the chip your immobiliser needs to allow the engine to start, even if it has no remote buttons. On older vehicles, or where you just want a simple backup, a transponder-only key is often the most affordable option. Spare van keys are just as common, particularly for fleets and trades where more than one person drives the vehicle.

Smart Keys & Keyless Entry Fobs. Spare smart keys give you hands-free entry and push-button start, and they're programmed to the vehicle using manufacturer-specific procedures. Smart keys cost more than standard keys, which makes having a spare all the more worthwhile, because replacing one after all keys are lost costs more again.

Additional Keys For Partners, Family & Other Drivers. Many spare keys are for convenience rather than backup: a second driver, a partner, a teenager learning to drive, or a key to keep at work. A second key also stops the classic problem of keys locked inside the car. With a spare at home, a lockout becomes a short trip rather than a callout, though if it does happen, see Locked Keys In Car.

Want a spare arranged? Call 023 8218 2738 or text us your registration.

Vehicles

Which Makes Can Have A Spare Made?

BMW, Audi, Mercedes-Benz, Land Rover, Jaguar, Volvo, Ford, Volkswagen, Vauxhall, Peugeot, Renault, Toyota, Nissan, Honda, Mazda, Hyundai, Kia, Subaru, Mitsubishi, Suzuki and more.

Makes covered

From Ford, Vauxhall & Volkswagen To BMW, Audi & Mercedes-Benz

We make spare keys for most mainstream and premium makes, including Ford, Vauxhall, Volkswagen, BMW, Audi, Mercedes-Benz and Land Rover.

Toyota, Nissan, Honda, Mazda, Hyundai and Kia are routine too, including many Toyota and Nissan imports.

Smart proximity car key fob and transponder chip
Diagnostic tablet connected to a car's OBD port
Modern systems

Keys For Modern Immobiliser, Remote & Keyless Systems

Spare keys range from simple transponder keys to proximity smart keys, and each system has its own programming requirements.

Give us your registration and we'll confirm the right key and process for your vehicle before we book you in.

Free quote

Get a free quote in two quick steps

Send your details and we'll call you back with a price. For anything urgent, just call.

  • Price explained before any work
  • No upfront payment
  • Deal direct with the technician
Or call 023 8218 2738

Get a Free Quote

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Spare now or later?

Spare Car Key Now Or Replacement After Losing Your Only Key?

Getting a spare while you have a working key is usually simpler, more convenient and less expensive than replacing a key once the last one has gone.

FactorSpare KeyAll Keys Lost
Working key availableYesNo
Key cutting requiredUsuallyUsually
Programming requiredOftenOften
Vehicle accessNormally straightforwardMay require entry first
Security procedureAdd or copy an appropriate keyRe-establish a working key
ConveniencePlanned appointmentUsually urgent
Risk of being strandedReducedAlready stranded

Why Having A Working Key Can Make The Process Simpler

A working key gives us the blade profile and, on many vehicles, allows a simpler programming procedure, so there are fewer steps involved.

The Cost & Convenience Of Preparing Before Your Last Key Is Lost

A spare is booked at a time that suits you, while an all keys lost job usually happens at the worst possible moment.

Many of our lost car key callouts come from drivers who meant to get a spare and hadn't got round to it.

Pricing

Spare Car Key Cost

The cost of a spare car key depends on your vehicle, the type of key, whether it has remote or smart functions, and how it needs to be programmed. A straightforward transponder key is usually the most affordable, while a proximity smart key for a newer vehicle costs more. We confirm the price before any work starts.

Why The Vehicle & Type Of Key Affect The Price

Key hardware varies widely, from simple transponder blanks to smart keys with complex electronics, and some vehicles take longer to program than others.

Why A Spare Key Can Be Simpler Than An All-Keys-Lost Replacement

With a working key available, there's no need to decode the lock or rebuild access to the vehicle's security system from scratch, which usually makes the job quicker and less expensive.

Clear Pricing Before We Cut Or Program Your Key

You'll know the price before we start, with no upfront payment, no hidden charges and no obligation to proceed.

If the key system turns out to differ from what was described, we'll explain the revised cost before going further. If you decline the revised quote, there's no call-out charge.

Get a spare key quote — call 023 8218 2738 or text your registration.

Recent work

Spares Recently Cut For Local Drivers

Typical spare key jobs and how they're resolved at the vehicle.

Ford Transit Spare Remote Key Made For A Second Driver

A Transit remote key cut from the existing key and programmed with the vehicle's PIN code, so a second driver can use the van.

BMW Spare Key Programmed For A Backup

A BMW spare typically involves preparing the new key from the vehicle's CAS or FEM data before adding it as a separately authorised key.

Volkswagen Golf Duplicate Key Cut & Tested On Site

A Golf remote key cut from the original, added through diagnostic programming and tested for remote locking and starting.

See more Recent Jobs or call 023 8218 2738.

FAQ

Spare Key Questions

Related services

Beyond A Spare: Other Key Services

Already Lost Your Only Key?

If no working key remains, you need an all keys lost replacement.

Having Trouble With A Key That Won't Start The Vehicle?

A key that no longer starts the car may need reprogramming rather than replacing.

Is Your Existing Key Damaged Or Falling Apart?

A worn or broken key can often be repaired or recased before it fails completely.

Need A Complete Replacement Car Key?

For all other replacement key needs, or if it's urgent.

Book ahead

Get A Spare Car Key Before You Need It

Book a spare now and you'll never be stuck with a single key again. We'll give you a clear price and a convenient appointment.

It helps to have these details ready:

  • Vehicle make, model and year
  • Registration number
  • Type of existing key (standard, remote or smart)
  • How many working keys you have
  • Where the vehicle will be

A quick photo of your existing key can also help us confirm the right blank. We cover Eastleigh, Chandler's Ford, Hedge End and the surrounding areas, or contact us online.

Mobile coverage across Eastleigh & surrounding areas