Quote:
Originally Posted by etc
Ya sorry wasn't being complete, was trying to stay mostly ontopic for the ecu stuff. I am having my cam gears changed out early next week (the affected ones at least), by a local shop. But have been going back and forth on the need to change the ECU. Logically I don't see how the cam gear issue effects the ECU but it is a common part of the work dealers do to solve the issue and It seems unlikely toyota would pay for it if it wasn't needed.
At the same time used ECUs are cheap (~$100 on ebay) and if this thread accurately describes the labor to replace them it seems worth just doing it and not worrying.
I am at 59,800. Unfortunately I have burned my bridge with the warranty though. I had a supercharger on the car and left part (oil cooler) on when I brought it in for service because these things seemed unrelated to me. Now they have flagged my car as modified and will not do this service under warranty. Before noticing that though they contacted Toyota who told them to replace the cam gear and ECU under warranty.
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Yes you can replace the ecu. However the problem is most likely in the mechanical parts like oil control valves, cam sprocket/actuators rarther than the ECU.
The ECU firmware should be updated to B01C or B01D if its an earlier revision like 700C 900C A00C A01C or B00C and correcponding D versions if your auto. Later then that no update required.
The ECU would only need replacing if you have either bricked it software/firmware wise or the ECU has an actual fault internally or with one of its sensor inputs or outputs. The units seem very reliable and it likely toyota/subaru were just being overly cautious saying to replace ECU.
It would be the last thing to replace unless you have a cheap one handy
Re the ECU's its appears that they will all likely be the same hardware.
Ive now dealt with people who have flashed 2013 roms to 2016 cars and all good and people who have flashed roms from different regions ie A01G roms from europe to USA cars.
The only thing im not 100% on is if auto and manual ECU is same hardware but its very likely they are. So you should be ok to get a newer manual or auto ecu for your car and just flash it back to your rom calid
Have found that newer rom calid flashed to older car causes some strange CEL codes with alternator and dash cluster, but strangly a 2016 car flashed with an old 2013 rom is ok.
Quote:
Originally Posted by StegaDragon
Was this from the dealer or directly from Toyota, either way the problem is more that the ECU memory is really hard to reset and will cause the code to reset, the new ecu is more to have a fresh start
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The ECU is reset and all codes reset if power is removed conpletly from ECU or its flashed or you reset codes with a code scanner. however I have noticed that cheap code scanners only reset the Active codes and often dont reset the dormant or stored codes. but you could just pull the battery.
I would say they are recommending ECU replacement in some CAM TSB to cover the rare possibility that the actual ecu hardware is faulty