How to open a car door with a tennis ball

Written by matt goetz
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How to open a car door with a tennis ball
Use a tennis ball to unlock your car. (Tennis Ball image by Jim Mills from Fotolia.com)

If you own a car, you have probably experienced the panic and frustration from locking the keys inside the vehicle. Locking yourself out of the car can not only cause frustration but also embarrassment---especially if you are in a public car park. You can use different methods to open a locked car door, but many methods can break your door lock, or even the window glass. For keyless-entry car locks, you can easily use a tennis ball to unlock to the door.

Skill level:
Easy

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Things you need

  • Tennis ball
  • Knife
  • Nail
  • Lighter

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Instructions

  1. 1

    Find a tennis ball at home, or purchase one at a local sporting-goods store. Cut a small hole about the same size as the keyhole on your car door into the side of the tennis ball; use a small kitchen knife or a nail to puncture a hole. You can also use a lighter to burn a hole.

  2. 2

    Press the tennis ball hole against the key hole, squeezing the ball until the air pressure causes the door to unlock.

  3. 3

    If the door does not unlock right away, continue applying pressure.

Tips and warnings

  • The tennis ball trick may only work for cars with keyless-entry door locks.

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