IS-F / Sport Steering ECU
07-25-14, 07:34 PM
#226
Would you mind explaining the process and your installation?
Did you lose power steering with the new ECU installed? Did the PS light illuminate after the installation?
Which version techstream did you use?
After the installation, I turned the car 'on' but the engine off. Connected techstream, went into EPMS and went into 'utility'. Tried following the instructions but kept having errors or communication issues.
Did you lose power steering with the new ECU installed? Did the PS light illuminate after the installation?
Which version techstream did you use?
After the installation, I turned the car 'on' but the engine off. Connected techstream, went into EPMS and went into 'utility'. Tried following the instructions but kept having errors or communication issues.
I lost power steering, the PS light did luminate after install.
V.9.10.037 installed on a 6 year old net book running XP.
Went into EPMS, went to utility with Ignition on (car off) then it prompts you to turn off ignition then turn back on and followed the rest of the steps.
07-25-14, 07:51 PM
#227
Remove battery, remove under tray, unscrew 3 screws holding the ECU down and remove 3 harnesses and reverse the process installing the new one.
I lost power steering, the PS light did luminate after install.
V.9.10.037 installed on a 6 year old net book running XP.
Went into EPMS, went to utility with Ignition on (car off) then it prompts you to turn off ignition then turn back on and followed the rest of the steps.
I lost power steering, the PS light did luminate after install.
V.9.10.037 installed on a 6 year old net book running XP.
Went into EPMS, went to utility with Ignition on (car off) then it prompts you to turn off ignition then turn back on and followed the rest of the steps.
I just got the newest version of techstream and got the mini-vci drivers working on 64 bit win 7. I will give it another try. Previously I was using techstream within VMWare running windows XP.
So when you have to turn the wheel for calibration, did you just strong arm it and rotate it? Whenever I got to that stage, I got an error.
It's frustrating that I spent 15 minutes installing the unit, and almost 2 hours troubleshooting. Unplugging and reinstalling multiple times...
07-25-14, 08:04 PM
#228
Pretty much everything I did, except no PS light.
I just got the newest version of techstream and got the mini-vci drivers working on 64 bit win 7. I will give it another try. Previously I was using techstream within VMWare running windows XP.
So when you have to turn the wheel for calibration, did you just strong arm it and rotate it? Whenever I got to that stage, I got an error.
It's frustrating that I spent 15 minutes installing the unit, and almost 2 hours troubleshooting. Unplugging and reinstalling multiple times...
I just got the newest version of techstream and got the mini-vci drivers working on 64 bit win 7. I will give it another try. Previously I was using techstream within VMWare running windows XP.
So when you have to turn the wheel for calibration, did you just strong arm it and rotate it? Whenever I got to that stage, I got an error.
It's frustrating that I spent 15 minutes installing the unit, and almost 2 hours troubleshooting. Unplugging and reinstalling multiple times...
07-26-14, 11:49 AM
#229
Guys, be careful, the other threads that have mentioned anything to do with illegal copies of techstream have been deleted or banned!
The moderators are VERY strict regarding this as it violates Lexus legal software.
My suggestion, take techstream software conversations offline or elsewhere.
Just my 2cents....
The moderators are VERY strict regarding this as it violates Lexus legal software.
My suggestion, take techstream software conversations offline or elsewhere.
Just my 2cents....
06-30-15, 10:16 AM
#231
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I just recalibrated my PS ECU. My setup is an 07 IS350 with an 08 ISF ECU. Once you go into the procedure of recalibrating/zeroing, you turn the car off/on, and it prompts you whether the PS light illuminated or not. Mine never came on. I redid it twice and still nothing. So I opted to skip that part.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
06-30-15, 09:10 PM
#232
I just recalibrated my PS ECU. My setup is an 07 IS350 with an 08 ISF ECU. Once you go into the procedure of recalibrating/zeroing, you turn the car off/on, and it prompts you whether the PS light illuminated or not. Mine never came on. I redid it twice and still nothing. So I opted to skip that part.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
07-01-15, 01:06 AM
#233
I just recalibrated my PS ECU. My setup is an 07 IS350 with an 08 ISF ECU. Once you go into the procedure of recalibrating/zeroing, you turn the car off/on, and it prompts you whether the PS light illuminated or not. Mine never came on. I redid it twice and still nothing. So I opted to skip that part.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
Made it to the 6 step procedure (strong arm, rotating back and forth). I kept getting a time out/connection error when starting that as well. So the first step is to "make sure the steering wheel was center." I ended up skipping that step because every time I went to make minor adjustments before moving onto step 2 (strong arm in one direction, rotating 90 deg) it would give me the error. Once I skipped that and followed through the rest of it, I was finally able to complete that part with no error.
You actually have a chance to center the steering wheel later on in the procedure, before the vibrate test (I think it was second to last part). It will prompt you to make sure the steering wheel is center again right before the vibrate test.
I ended up draining my battery last night trying to figure all this out. Spent like two hours on it, with no luck. I had to wait until the morning before work to finally complete it. So hopefully this helps others with theirs and you don't end up killing your battery like I did.
After all those errors and skipped steps did you successfully calibrate the steering? Is it working 100% trouble-free the way it's supposed to be?
Thanks!
07-01-15, 08:29 AM
#234
I'm not sure how well it will work if you skip a number of steps. When I did mine I had a lot of communication problems. It failed on the center the steering wheel part as well. I finally got it done after I used a trickle charger first to make sure I had a good charge, but I think what really got me thru was plugging the power supply into my laptop. I suspect the problem people have is that the techstream cable is powered by usb and I don't think most of the newer motherboard chipsets can supply enough voltage, especially when not plugged in. In order to really test that theory, I'd have to reprogram it a few times, and I'm not willing to do that now that it works fine. Just something to try when you have difficulty.
07-01-15, 08:35 AM
#235
The "tool" to program is a techstream cable and they can be had for $20 to $30 on ebay or elsewhere. The software is freely downloadable and you can run the software without paying the registration fee. Not all functionality works if you don't register, but this part does. Toyota has had an opportunity to change the software to cut off this avenue on multiple releases if they wanted to, but they haven't ... well not since I checked last year anyway.
07-16-15, 09:12 AM
#237
Pole Position
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This may sound stupid, but is there a trick to removing these plugs? I got one of the ones near the engine off (old traditional one) , but the other 2 seems like there is a bar or something to loosen before it will come off.
thanks
thanks
12-15-15, 11:22 PM
#238
Tech Info Resource
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For those still having the communication errors when trying to calibrate - clear the DTCs first. The factory service manual is very clear about needing to do this first. I had the same issues, then read the content on TIS and it went like butter.
01-29-16, 08:39 AM
#239
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So there's a possibility the service department will refuse? Sounds like a pain. Maybe I'll ask first before I find the ECU. Sounds like an awesome upgrade.
