How to Bypass a Transponder Key

by Susanne Koenig
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Car key image by Corneliu C from Fotolia.com

A transponder key emits a unique radio frequency that lets your ignition know that the proper key has been inserted into the car. This adds a layer of security to your car and deters hot wiring. Most transponder keys are electronically coded with a secure frequency specific to your car, meaning that they usually can be programmed only by an automotive locksmith or your dealership. More often than not, this makes them expensive to replace. If you would like to bypass your transponder key every time you start your vehicle or are installing a remote starter, consider bypassing the ignition security.

Step 1

Take your transponder key and place the plastic head in a pair of pliers. Gently grasp the pliers and work off the key head. If it will not slip off easily, grasp the metal end of the key with the flat surface of the other pliers and gently pull in opposite directions until the head slips off. Do not pull with the pliers by grasping the key's teeth; you will compromise the key's ability to turn the tumblers in your ignition.

Step 2

Place the key's head near the ignition with the hot glue gun. Squeeze a quarter-sized dab on the underside of the steering column, as close to the ignition as you can get, and press the key head into the glue until it sets.

Step 3

Test the ignition with the key to turn it over. The transponder's proximity to the ignition will allow it to start without having a full transponder key in the ignition. Get an additional plain key cut if you want a spare.

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