Lost key, how to bypass the key chip to start the car?

2008 MAZDA 5
144,808 MILES
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LADYBOSS22
  • MEMBER
  • 1 POST
Lost my key peeled out the ignition and can't bypass the key chip or whatever it's called, but how can I start my car.
May 25, 2023 at 5:22 PM
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BORIS K
  • ASE Certified Mechanic
  • 836 POSTS
  • ASE Certified Mechanic
Hello,

Unfortunately, there is no easy "bypass" to start your vehicle without a matching transponder key.

The transponder in the key sends a signal via the ignition lock pick up coil to the immobilizer system. This system then verifies that the correct key has been inserted and gives the okay to start signal to the engine management system.

I would suggest either contacting your local locksmith to come out to your vehicle, cut and code a replacement key or tow the vehicle to a suitable workshop and have the work done there.

A good video:
https://youtu.be/3TIeRxi3mTw

Cheers, Boris
May 26, 2023 at 12:37 AM
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