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Unlocking Car if Locked Out


Senior Member
I just received this information via email, and thought it might be useful to other teachers.

If you lock yourself out of your car, call someone on your cell phone who has your extra keyless entry. They should hold the keyless entry next to the mouthpiece of their phone. You should hold your cell phone about 1 foot away from your car door. The door will unlock. This works for trunks, too. Distance between phones is not a factor.


Senior Member
it is true

My husband and I recieved the same e-mail and decided to test it out. Low and behold, it did work!


this too

Kind of the same thing, but try holding the thing to your head, push the button and from a very long distance, the car will still open. Spooky, I've tried it and guess what??? IT WORKS TOOOO

Teach 5

Senior Member
not possible

(More than a few people have inadvertently fooled themselves into believing the cell phone method of unlocking car doors actually works because they tried it and achieved the desired results — not realizing their cars were still within range of their keyless remote devices, and the signals that unlocked the doors were transmitted the usual way [i.e., through the air], not via cellular phone connections.)

Relaying remote entry system signals via telephone might work if the signals were sound-based, but they're not. An RKE system transmits an encrypted data stream to a receiver inside the automobile via an RF (radio frequency) signal, a signal that can't be effectively relayed via cell phone. (In any event, RKE systems and cell phones typically operate on completely different frequencies; the former in the 300 MHz range and the latter in the 800 MHz range.)