Dealer says I need new ECM. If I buy used unit with exact number, can I just plug unit in and go or is there other things I will have to do?

 

What year of car?

Newer cars have the VIN programmed into the computer by the manufacturer or dealer. Not sure but don't think not having the VIN programmed effects the computer operation.

Be sure to get the exact number replacement!

Try Ebay or junkyards first, dealer prices are $$$. Do a Google search by typing in the exact number and check the results.

 

ECM replacementis for 2003 Camry. Found one on EBAY that is exact match on numbers. I didn't know if I had to program anything or if it would work just plugging it in.

 

The ECU does not need to be programmed for your car; just that later models had the cars VIN number inputted to the ECU memory, why? Not sure what year this started.

Posts state not having the correct VIN on the computer does not prevent the computer from operating correctly.

The computer should have an extended warranty of 7yr/70K or 8yr/80K miles as mandated by the EPA.