Mobile service — keys cut and programmed at your vehicle in Eastleigh and nearby.
What to do if you've lost your only car key
Stop searching after ten minutes and call an auto locksmith — a new key can usually be made from the vehicle itself, so a lost key is not the disaster it feels like.
Retrace the obvious places first (pockets, bags, the last shop you went into), then accept the loss and get the replacement moving. Have the registration ready, note where the car is parked and whether it is locked, and check whether anyone else in the household has a key you have forgotten about. If the key was stolen rather than mislaid, report it and ask for the old key to be deleted from the vehicle during programming.
Can a locksmith make a car key without the original?
Yes — on most vehicles. The new key is generated from the vehicle rather than copied from an existing key.
The blade is cut using lock-code data tied to the vehicle, and the electronic side is programmed through the car's own security routines so the immobiliser accepts the new key. It takes longer than cutting a spare and it costs more, but it avoids recovering the car to a dealership. A minority of vehicles — usually very recent models or certain premium security systems — restrict this to dealer equipment, which is why the registration is checked before booking.
How much does a replacement car key cost in the UK?
There is no single figure — the cost depends on the key type, the vehicle and whether any working key remains.
The main things that move the price:
Key type — a plain transponder key is the cheapest, a remote key sits above it, and a smart or proximity fob is the most expensive part.
All keys lost — more work than a spare, because nothing can be cloned.
Vehicle — some makes need specific equipment or longer programming routines.
Where and when — a planned visit differs from an urgent call-out.
Any site quoting one flat price for all vehicles is guessing. Call 02382 180574 with the registration and you will get a real figure for your car before booking.
Auto locksmith vs main dealer
A mobile auto locksmith comes to the vehicle and usually finishes the same day; a main dealer needs the car on site, which often means recovery.
Dealers order keys against the VIN and fit them at the workshop, so a lost-key job typically involves a tow, a booking slot and a wait for parts. An auto locksmith carries key blanks, cutting equipment and programming tools in the van, so the same job happens on your driveway in Eastleigh. Dealers make sense for vehicles where key programming is locked to manufacturer systems — and a good locksmith will tell you when that is the case instead of taking a wasted call-out fee.
Nine times out of ten it is the battery, a worn button or a failed transponder — in that order.
If the remote no longer locks the car but the blade still starts it, suspect the battery or the buttons. If the doors unlock but the engine will not fire, the transponder or the immobiliser link is the likely cause. If the key feels loose or rough in the lock, the blade may simply be worn out. Water damage and cracked solder joints after a drop are also common, and both usually announce themselves as a gradual loss of remote range.
Often, yes. If the electronics survived, the transponder and remote board can be moved into a new case with a freshly cut blade.
A re-shell suits snapped blades, split cases and worn buttons, and because the original electronics are reused, no programming is normally needed. Where the transponder or remote board itself has failed — typically after water damage — a replacement key is the honest recommendation. If part of the blade is stuck in a lock, that is removed first.
Yes, on supported vehicles — keyless entry and push-button start included.
A smart or proximity key is detected by the car rather than turned in a barrel, so programming pairs the fob to the vehicle for keyless entry and starting, and the emergency blade hidden inside the fob is cut for manual door access. Coverage is more model-specific than on traditional keys, and quality varies a great deal between aftermarket fobs, so the registration and the fob type are both checked first.
What information is needed for a replacement car key?
Registration, make, model, year, key type, whether any key still works, and where the vehicle is.
The registration identifies the key system, and the year matters because manufacturers change systems mid-generation. Knowing whether a working key remains decides whether the job is a spare or an all-keys-lost. You will also need proof of ownership at the visit — the V5C and photo ID, or business documents for a company vehicle.
The key contains a tiny chip that answers a challenge from the immobiliser. No correct answer, no engine.
A coil around the ignition or the reader powers the chip wirelessly — which is why a transponder still works with a flat fob battery. The immobiliser sends a coded challenge, the transponder replies, and only a valid reply allows fuel and ignition. That is why a cut key alone will not start a car built since the late 1990s: the mechanical part opens the door, the transponder does the security. Programming is the process of adding a new chip to the list your vehicle trusts.
