Replacing the ECM does it need to be programmed to my car?

2001 CHRYSLER CONCORDE

180,000 MILES • 3.2L • 6 CYL • 2WD • AUTOMATIC

CHRISRYALS29

MEMBER
1 POST

I have to replace the engine computer. I bought a used one with the same part number. My mechanic asked me if my key to the car has a chip or not, (I have no idea). he's saying if it doesn't have a chip in the key, he can just remove the old one a just plug the new one in. Car listed above is an Lxi. Does that car have a chip key? Is it true what the mechanic is saying about the chip?

Sep 26, 2021 at 6:15 PM

SQM

✓ASE Certified Mechanic
6,383 POSTS

Hello,

The ECM/PCM will needs to be programmed to your vehicle.
Without the reprogramming or relearning process the vehicle will not recognize the new part.

The programing of this will require a special scan tool.

I attached the programming procedure for your reference.

Please let me know of any questions.
Thank you.

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Sep 26, 2021 at 6:47 PM