Replaced ECM now car will not stay running
04-08-2008 | 09:23 PM
#1
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Replaced ECM now car will not stay running
I just replaced the ECM in my 07 tC that was in an accident. The car will start but not stay running.
The ECM is the same part number as the one that was in the car and is also from an 07.
Does the ECM need to be reprogrammed or reflashed if it is put into a different car than it was originally in?
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The ECM is the same part number as the one that was in the car and is also from an 07.
Does the ECM need to be reprogrammed or reflashed if it is put into a different car than it was originally in?
____
Last edited by MR_LUV; 07-13-2020 at 07:16 PM. Reason: Awarded 10 Yr Badge
04-08-2008 | 09:28 PM
#2
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From: ASU, Arizona & SoCal
Yes it does. Every ECM is VIN number specific so each ECM is basically keyed to that car. I had the same problem when I got a new one from being supercharged.
You need to take the car to the dealership and have your ECM re keyed to match your VIN aka your car
You need to take the car to the dealership and have your ECM re keyed to match your VIN aka your car
04-09-2008 | 02:26 AM
#3
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Do I need to bring the whole car to the dealer? Its not really in drivable condition right now, lol. Do you think they would be able to reprogram it if I just bring the computer? I want to make sure the car runs fine and the engine is still good before I do the body work on the car.
04-20-2013 | 04:26 AM
#10
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Posts: 4
I need the instructions for reprogramming also. Scion tC 2007 manual trans.
I've changed out my ECM and it wouldn't start. I'm still using my old one. The old one is OK with the exception of my A/C clutch not working. I had the ECM loose after testing the new ECM and #2 cylinder would start missing. checked all connections on the ECU and haven't had a problem for 6 months.
I'm back a totally dead #2 and ready to get A/C and #2 back by installing reprogramming the new ECM. Reading the thread, I would like the instructions. My local Toyota dealer said they could do it but didn't and starting to do diagnostics instead. They didn't charge me because they didn't do what I had
asked them to do, replace and reprogram.
____
I've changed out my ECM and it wouldn't start. I'm still using my old one. The old one is OK with the exception of my A/C clutch not working. I had the ECM loose after testing the new ECM and #2 cylinder would start missing. checked all connections on the ECU and haven't had a problem for 6 months.
I'm back a totally dead #2 and ready to get A/C and #2 back by installing reprogramming the new ECM. Reading the thread, I would like the instructions. My local Toyota dealer said they could do it but didn't and starting to do diagnostics instead. They didn't charge me because they didn't do what I had
asked them to do, replace and reprogram.
____
Last edited by MR_LUV; 07-13-2020 at 07:22 PM. Reason: Awarded 5 Yr Badge
04-21-2013 | 12:28 AM
#11
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Joined: Aug 2006
Posts: 1,251
From: SOUTHERN CALIFAS
I need the instructions for reprogramming also. Scion tc 2007 manual trans
I've changed out my ECM and it wouldn't start. I'm still using my old one. The old one is ok with the exception of my a/c clutch not working. I had the ECM loose after testing the new ECM and #2 cylinder would start missing. checked all connections on the ECU and haven't had a problem for 6 months. I'm back a totally dead #2 and ready to get a/c and #2 back by installing reprogramming the new ECM. Reading the tread, I would like the instructions. My local toyota dealer said they could do it but didn't and starting to do diagnostics instead. They didn't charge me because they didn't do what I had asked them to do, replace and reprogram. . . .
I've changed out my ECM and it wouldn't start. I'm still using my old one. The old one is ok with the exception of my a/c clutch not working. I had the ECM loose after testing the new ECM and #2 cylinder would start missing. checked all connections on the ECU and haven't had a problem for 6 months. I'm back a totally dead #2 and ready to get a/c and #2 back by installing reprogramming the new ECM. Reading the tread, I would like the instructions. My local toyota dealer said they could do it but didn't and starting to do diagnostics instead. They didn't charge me because they didn't do what I had asked them to do, replace and reprogram. . . .
04-21-2013 | 05:02 AM
#12
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04-21-2013 | 05:53 AM
#13
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From: SOUTHERN CALIFAS
I can text you the pictures, G-Mail is a pain on my phone. I have the Toyota file on my computer, but not quite sure how to get it to you.
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Last edited by MR_LUV; 07-13-2020 at 07:24 PM. Reason: Awarded 10 Yr Badge
04-21-2013 | 06:09 AM
#14
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Posts: 4
___
Last edited by MR_LUV; 07-13-2020 at 07:27 PM. Reason: Awarded 5 Yr Badge
07-13-2020 | 05:25 PM
#15
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Joined: Jul 2020
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01-13-2021 | 05:27 AM
#18
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It's posted right above your post. Use paper clip in obd2, look on youtube
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