Replacement car keys

Lost the car key?

What's worse than a lost or locked-in car key? Probably having to fork out an arm and a leg to have it replaced. Here's some help to prevent being locked out of your car again.

Car keys


What to do if you lose your car key? 

  • Depending on your policy, you could claim for the cost of a replacement key on your car insurance.
  • Call a breakdown service if you've left your keys inside the car and need to get going in a hurry. Depending on your breakdown policy and how they get your keys back to you, there may be an extra cost involved.
  • Buying a new key is an expensive way to get back into your car in an emergency, but sometimes it can't be avoided.

What are car fob keys and what if you lose one?

It's a little gadget (commonly called a keyless entry system or smart key) normally attached to your vehicle key ring that lets you lock and unlock the doors on your car. More advanced car fob keys now let you start the ignition, set the car alarm, and open and control the boot and windows.

Despite being convenient, a replacement fob key can be pricey as they need to be programmed to your car. Plus you'll need to find a local dealership or an auto locksmith on a working day.

Just like getting a spare car key cut, take your driving licence and V5 document with you to prove the car is yours.

What not to do if you're locked out of your car?

The internet is full of videos and articles that show how to break into a car with the keys locked inside.

But you'd be taking quite a big risk, because damage caused by trying to unlock your car in any other way than that suggested by the manufacturer is unlikely to be covered by your insurance. Plus there's the potential headache of having to deal with a dented door, or a smashed or cracked window.

How to avoid losing your car key

Try these tips to help keep your key at hand.

  • Key hook Instead of a coat pocket, another coat hook is an effective way to to keep your keys secure. However, keep the hook out of sight of windows and doors to discourage car thieves from taking them.
  • Meet the neighbours Asking a close friend or trusted neighbour to hold a spare car key is a good way to make sure you're never without your car at home. You'll still have to find the lost key or get it replaced, but this is a great solution to get you out of a jam.
  • Make them big Adding a sizeable toy or soft ball to your key ring won't be pocket-friendly, but the key will be harder to lose.
  • Make them glow Early in the morning and late at night your car key could be in plain sight but still hard to find. Attaching a small glow-in-the-dark object can stop you from having to turn the house or office upside down.
  • Use some tech Companies like Tile have apps that make finding your car key easier. By attaching a Bluetooth tracker – usually about the size of a supermarket points card – to your bunch of keys, you can let your phone or tablet do the looking for you.

The future of car key technology

Car manufacturers are starting to introduce technology to help prevent drivers from accidentally locking their key in the car.

The use of car keys may decline over time as new technologies take over. Misplacing your keys could be a worry of the past if voice recognition or fingerprint entry becomes the norm.


The Gold level of AA car insurance will replace a lost or stolen car key, lock transmitter or entry card up to the value of £1,000.

Or why not look at our Key Assist service to get you back on the road? There's no need to be a breakdown cover member.


Author: The AA. Published 13 April 2017. Updated 8 August 2024.

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