Why You Should Always Have a Spare Car Key
A spare car key is the cheapest insurance. Cutting a spare while you hold a working key is a planned job; replacing all keys after losing the only one is an emergency that costs more and takes longer. A spare also covers everyday mishaps — lockouts, dropped fobs, a stranded partner. One spare, stored sensibly, prevents almost every key crisis.
Ask any auto locksmith what the cheapest visit is and you will get the same answer: the one that never happens. A spare key cut on your driveway, on a day of your choosing, costs a fraction of an emergency all-keys-lost job — and it takes the panic out of every key mishap that follows.
This is not a sales pitch; it is arithmetic. If you have already lost your only key, start with our what to do when your only key is gone. Everyone else, read on.
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The cost gap: spare now vs emergency later
Cutting a spare while everything works is a planned, straightforward job. The working key provides the cutting code, the programming reference and the proof that the system works — the locksmith duplicates a known-good setup. Lose the only key and the job changes completely: the car must be decoded from scratch, the immobiliser system accessed without a working reference, and every step verified.
The emergency version costs more because it is more work, and it usually happens at the worst moment — late at night, in a car park, before work. Costs vary by make, model, year and key type, but the spare-always-cheaper rule holds across all of them.
What a spare actually protects you from
It is not just about losing keys. A spare in the household covers a surprising range of ordinary bad days:
- Keys locked in the car or boot — the spare ends the lockout in minutes
- A fob dropped, drowned or run over — you drive home while it is replaced
- A key snapped in the ignition — the car is still usable
- A partner or teenager stranded — they are never waiting on a locksmith
- A failing key — the spare proves whether the fault is the key or the car
Every driver in the household needs one
The classic failure mode is a two-driver household sharing one key. Sooner or later the key is in the wrong coat, the wrong bag or the wrong town — and the car might as well not exist. Two drivers means two keys as a minimum, each cut and programmed properly.
There is a diagnostic bonus too: when a key starts misbehaving, trying the spare instantly tells you whether the key or the car is at fault. That one test saves guesswork on every future key problem.
Is your household covered? A quick checklist
Run through this honestly:
| Question | If yes | If no |
|---|---|---|
| Does every regular driver have a key? | Good — check they all work | Get spares cut before you need them |
| Is there a spare stored safely at home? | Test it twice a year | Cut one and store it properly |
| Do you know where the spare is right now? | Well done | A spare you cannot find is not a spare |
| Has the spare been tested this year? | Batteries and chips age | Test it — a dead spare helps nobody |
Getting a spare cut
You do not need to visit a dealer or wait weeks. A mobile auto locksmith cuts and programs spare keys at your car — often while you are at home — and the whole thing is done in one visit. Bring the working key and proof of ownership, and the job is routine.
For the local service, see car key replacement in Alvechurch. And if cost is the question holding you back, our guide to spare car key costs in the UK breaks down what drives the price.
Store the spare properly
A spare only works if it is findable and separate from the main key. Not in the car, not on the same keyring, and not in the same coat pocket. A drawer at home, a trusted family member, or a proper key safe are the sensible options — each with its own trade-offs, covered in our guide to where to store spare car keys safely.
The best time to cut a spare
The honest answer is the day you buy the car — especially a used car that arrives with a single key. Beyond that, the natural moments are before winter, when marginal batteries fail on frosty mornings; before a holiday, when a lost key far from home becomes a saga; and whenever the household changes, such as a teenager starting to drive.
The worst time is after the crisis. Every all-keys-lost job ends with the same advice, given too late: get the spare cut while you still have a working key to copy from.
Get your spare sorted
If you are reading this with a working key in your hand, now is the moment to get the spare sorted — while it is a simple copy job, not an emergency. We cut and program spare keys at your home or workplace across Alvechurch, Bromsgrove, Redditch and Birmingham South. Call or WhatsApp 07367 634032 for a clear quote — tell us the make, model and year and we will take it from there.
Frequently asked questions
Is it cheaper to get a spare key before losing the original?
Yes, always. Duplicating a working key is a planned job; replacing all lost keys is an emergency that takes more work and costs more.
Can I get a spare key without the original?
Yes, but it is a bigger job. A locksmith generates the key from vehicle data instead of copying, which is why doing it while you still have a key is better.
How many spare keys should a household have?
At least one per regular driver, plus one stored safely at home. Two drivers sharing one key is the most common cause of key crises.
Where should I keep a spare car key?
Somewhere findable and separate from the main key: a drawer at home, with trusted family, or in a key safe. Never in the car itself.
Does a spare key need programming too?
Yes. Every key with a chip or remote must be programmed to the car, including spares. An unprogrammed spare will not start the engine.