2004 Acura MDX ECU replacement

CLIU1997

MEMBER
2004 ACURA MDX
6 CYL
4WD
AUTOMATIC
100,543 MILES

The ECU in my MDX need to be replaced. I wonder if I can do it myself. Is the ECU just plug and play? I am aware that I need to program the remote once the new ECU is in. Some people said that I have to program the ECU for the key too.

Sunday, May 23rd, 2010 AT 2:34 PM

5 Replies

JEREMIAH

MECHANIC
217 POSTS

The vehicle's vin, mileage and keys have to transferred to the new ecu whenever replaced so unless you have the right equipment, you need to go to a dealer.
Why do you need a new ecu?

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Sunday, June 20th, 2010 AT 2:55 AM

CLIU1997

MEMBER
3 POSTS

I need a new ECU because the check engine light came on and got the P0603 code (PCM Keep Alive Memory (KAM) Error.

Anyways to fix the problem without getting a new ECU? Please let me know.

Thank you very much!

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Sunday, June 20th, 2010 AT 10:33 PM

JEREMIAH

MECHANIC
217 POSTS

All you should need is a software update for ecm, the dealer will be able to update your software. Aside from that you can just clear the code and you should be fine, I wouldn't recommend replacement just because you read that code.

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Wednesday, June 23rd, 2010 AT 10:28 PM

CLIU1997

MEMBER
3 POSTS

The check engine light cannot be cleared. The check engine light came right back on after each reset. I will follow your recommendation bringing my MDX to the dealer. Thank you very much!

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Wednesday, June 23rd, 2010 AT 10:50 PM

JEREMIAH

MECHANIC
217 POSTS

If you couldn't clear the code then that is your only possbible solution before I would recommend replacing the ecm.
If you have them do a diagnostic they should waive the labor cost of updating the ecm or part of the ecm replacement, make sure before you pay for diagnostic because not all dealers follow standard policy.