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Discussion Starter #1
Can anyone tell me where the ECU is located on a 300M?
I just bought a 3.5 motor out of one & I want to make sure I get that to match my motor.
Thank You
Rich.
 

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It is in the driver side engine bay in the corner at the front of the car. Depending on the model,(I'm assuming 2000 from one of your other posts) there are 2 different units. The one closest to the bumper is the TCM and the one right behind it is the ECU. They are located under or near a fluid filling resevior.
 

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Discussion Starter #3 (Edited)
ECU location

Thank you, for the info. I did not take any chances on not getting everything I would need for this swap, so I bought the whole front clip. The area just in front of the ECU & TCM was damaged, but it looks as if the items I need was just pushed back a little.

Update well I found them, but they were smashed so I had to use my old ones for now.
 

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blurred10 said:
It is in the driver side engine bay in the corner at the front of the car. Depending on the model,(I'm assuming 2000 from one of your other posts) there are 2 different units. The one closest to the bumper is the TCM and the one right behind it is the ECU. They are located under or near a fluid filling resevior.

i know im bringing up old post but the ECM and TCM are under a fluid reservoir? what part of water and computers dont go together :)
 

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IntrepidCUB said:
i know im bringing up old post but the ECM and TCM are under a fluid reservoir? what part of water and computers dont go together :)

They are sealed units, virtually impossible to get water into them without being subjected to other, probably more fatal damage.
 
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