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Car key lost or fob dead: what to do

Check the simple things first, then get a spare or replacement without being towed or overcharged.

19 items · 4 sections · car, driver, mechanic, documents

Start this checklist

If the fob is just not working (5)

  • Try the key hidden inside the fob: most fobs have a metal blade to open the door
  • Hold the fob against the start button or the marked spot on the steering column and press startMany cars read a dead fob this way.
  • Replace the coin battery (often a CR2032): the number is printed on it
  • Check the manual for the backup start spot and the exact battery type
  • Check the car battery is not flat: dim lights or a clicking sound point to that

If the key is lost (5)

  • Retrace your steps and check pockets, bags, car seats and the last place you parked
  • Ask at shops, cafes and offices you visited and call the lost property desks
  • Look for a spare at home, at a family member’s house or with a trusted friend
  • Stop and lock the car if it is still unlocked: park it somewhere safe
  • If the key was stolen with your bag, treat the car as at risk and tell the police

Get a replacement (6)

  • Find your registration papers and a photo ID: you will have to prove you own the car
  • Write down the VIN (on the dashboard by the windscreen or in the papers)
  • Ask the dealer and a locksmith for a price and a time; compare them
  • Ask whether the old key can be switched off so a found key cannot start the car
  • Ask your insurer whether keys are covered and what the excess is
  • Have a spare cut and keep it somewhere safe, not in the car

Next time (3)

  • Keep one spare at home and set a reminder to change the fob battery every two years
  • Put a phone number or tracker tag on your key ring
  • Take a photo of your registration papers and VIN and keep it in your phone

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