A spare car key matters because making a copy of a key you still have is far simpler than creating a new one after the last key is gone. With a working key in hand, a duplicate can usually be cut and, if needed, programmed in one visit. Without one, the key has to be originated from the vehicle itself, the car may need to be towed if it can't be reached by a mobile service, and you're without transportation until it's done. A spare turns a lost key, a lockout or a broken fob into a minor inconvenience instead of an emergency.

Want a spare made before you need it? Call (613) 707-4884.

Copying a Key vs Starting From Nothing

The difference comes down to what the locksmith or dealer has to work with:

  • With a working key: the existing key provides the cut pattern, and on many vehicles a working key also makes programming a new one more straightforward. It is usually the quickest and least complicated job.
  • With no working key: the cut pattern has to be found from a key code or by decoding a lock, and every chipped key or fob has to be programmed to the car from scratch. On some vehicles this needs specialized equipment or a trip to the dealer.

If you're already in the second situation, our guide to lost car keys with no spare walks through your options.

Everyday Situations Where a Spare Saves the Day

  • Keys locked inside the car. Someone at home can bring the spare, often faster and cheaper than any other option.
  • A lost key. You can keep driving with the spare while you decide whether to replace the lost one.
  • A dead or broken fob. Fob batteries fail, buttons wear out and cases crack. A second working fob keeps you moving while the first is repaired.
  • A worn key. Keys wear along with the lock. A spare that is used less often can show whether a sticky ignition is caused by the key or the cylinder.
  • Shared vehicles. Households with more than one driver avoid handing one key back and forth.

Bought a Used Car With Only One Key?

It's common to buy a used vehicle that comes with a single key. Have a spare made as soon as you can, while the original still works. If you're not sure where all the previous keys ended up, ask whether your vehicle allows old keys to be removed from the immobilizer's memory when new ones are programmed. On many vehicles this is possible, and it means a lost key from the previous owner can no longer start the car.

Where to Keep Your Spare

A spare only helps if you can reach it and a thief can't.

  • Do keep it at home in a consistent place, or with a trusted family member, friend or neighbour.
  • Do keep a smart key spare away from doors and windows at home, so it isn't sitting within range of the car.
  • Don't leave it inside the vehicle, in the glovebox or console. If the car is stolen or broken into, the thief has a working key.
  • Don't rely on a magnetic box under the bumper. They are a well-known hiding spot and can fall off on rough Ottawa roads.
  • Don't keep both keys on the same ring. It defeats the purpose of having a spare.

What Kind of Spare Do You Need?

The type of spare depends on your current key. A plain metal key can simply be cut. A key with a transponder chip needs to be cut and programmed so the immobilizer recognizes it. A remote-head key or smart key also needs its remote functions paired to the car. Our article on car key duplication vs replacement explains how each type is handled. The factors that affect the cost are the type of key, the vehicle make and model, and whether programming is required.

Your Next Step

The best time to get a spare is while you still have a working key. Learn how our spare key duplication service works, or call (613) 707-4884 with your vehicle's year, make and model.