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How to program key to the car or ignition?

Tiny
CAROLHANSON
  • MEMBER
  • 2005 FORD MUSTANG
  • MANUAL
  • 3,000 MILES
How to program key to the car or ignition without having the original key I replaced the ignition lock cylinder now I'm trying to program my key so my car will crank.
Tuesday, March 8th, 2022 AT 4:59 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,289 POSTS
Hi,

If you have none of the original keys, you need to erase all stored key codes in the PCM and reprogram it to recognize the new one.

This requires a scan tool that can gain security access and erase codes. Once the old codes are erased, then you disconnect the scan tool and it's nothing more than installing the new key and turning the key on for 3 seconds and then off.

I attached the directions specific to the vehicle below.

Let me know if this helps or if you have other questions.

Take care,

Joe

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Tuesday, March 8th, 2022 AT 3:35 PM

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