Help! Power Steering doesn't work after doing the IS-F Steering ECU mod
07-10-14, 04:26 PM
#16
I took yalls advice and drove down to the dealer on the stock ecu, then swapped it in the parking lot. Luckily they were able to get it calibrated without issue. I cant tell you how relieved i am! I just don't understand why im the first person to do the ecu swap and it provide no power steering assist at all until calibration. Plus what was with the other issues, who knows.
07-10-14, 06:14 PM
#17
Jeff, Were you able to do is? When I played around with a professional diagnostic subscription to TIS using the junk cable the process was accessible. It was not however present on the clone software even for initialization. Maybe it was because the 2 codes were present and couldn't be cleared to start initialization?
07-11-14, 06:16 AM
#20
it updates the steering feel to what an 2011+ ISF feels like, and when you put the ECT button in Power the steering wheel will stiffen. Its not a PITA, OP didnt know about the calibration that you have to do with the techstream software. So bring both ECUs to the dealer, swap in the ISF one, get them to calibrate it and its done. Even some pre 2011 ISF owners swap to the 2011+ ISF steering ECUs and even for them its a noticeable upgrade.
07-11-14, 07:07 AM
#21
I took yalls advice and drove down to the dealer on the stock ecu, then swapped it in the parking lot. Luckily they were able to get it calibrated without issue. I cant tell you how relieved i am! I just don't understand why im the first person to do the ecu swap and it provide no power steering assist at all until calibration. Plus what was with the other issues, who knows.
Whats the scoop with the techstream cable, is this something I should look into?
Whats the scoop with the techstream cable, is this something I should look into?
07-11-14, 08:20 AM
#23
I took yalls advice and drove down to the dealer on the stock ecu, then swapped it in the parking lot. Luckily they were able to get it calibrated without issue. I cant tell you how relieved i am! I just don't understand why im the first person to do the ecu swap and it provide no power steering assist at all until calibration. Plus what was with the other issues, who knows.
Whats the scoop with the techstream cable, is this something I should look into?
Whats the scoop with the techstream cable, is this something I should look into?
How much did the dealer charge you to calibrate?
Also care to share with us the differences you feel after the ECU swap?
thanks
MEAHT
07-11-14, 10:14 PM
#24
After having driven the car today I consider this mod a must. I have owned my IS350 just shy of a year and the front and rear sway bars was my first suspension mod, as well as the best money I have spent towards handling, however the steering always felt "finicky" to me, to the point where I vowed never to own another electric steering equipped car again, I was actually on the fence about selling my car over this. I consider the ISF ecu swap the mod that has given me hope for this vehicle. I do not consider the steering to be any heavier, or even to give more resistance to my inputs like I thought it would. Rather what I did notice was that the car is actually predictable now, it switches lanes at 75mph like a proper performance vehicle should, where as before it was like the steering was trying to second guess and over compensate for me...I never truly felt in control until now.
Btw, did I mention I am on luxury package shocks and springs? I think im about to pull the trigger on something a bit more fitting for my new ISF ecu, then we will see how things improve overall.
07-24-14, 09:38 PM
#25
God damnit....
Well, I picked up my ECU from the dealer today and gave it a shot. Same issue, no power steering.
I had not been up to date on this thread, so I thought that the no power steering was a sign of a problem, maybe not? I tried calibrating with my chinese techstream, but had no luck. When following the directions, it said to verify that the PS light was on, but it never came on.
Ran out of day light and had to put the stock one back in.
I will give it another try tomorrow or Saturday.
Does anyone have directions on how to use Techstream to calibrate the ECU?
Well, I picked up my ECU from the dealer today and gave it a shot. Same issue, no power steering.
I had not been up to date on this thread, so I thought that the no power steering was a sign of a problem, maybe not? I tried calibrating with my chinese techstream, but had no luck. When following the directions, it said to verify that the PS light was on, but it never came on.
Ran out of day light and had to put the stock one back in.
I will give it another try tomorrow or Saturday.
Does anyone have directions on how to use Techstream to calibrate the ECU?
07-25-14, 01:39 AM
#26
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Are you in Vancouver BC? I had the ECU for about a year now but I've been lazy to install and couldn't get my chinese techstream to work either, apparently it should be on the menu but I can't seem to find it either....
Are you in Vancouver BC? I had the ECU for about a year now but I've been lazy to install and couldn't get my chinese techstream to work either, apparently it should be on the menu but I can't seem to find it either....
07-25-14, 08:03 AM
#27
I am really hoping I can get this to work without having to pay more. Spending $350 was already more than I wanted to spend....
I found where you're supposed to calibrate in the menu, just couldn't get it working. Under EMPS, then utility is where you calibrate.
Did you have your new ECU installed when you were looking in techstream?
07-26-14, 08:25 AM
#28
It appears it "might" work based on software and hardware versions.
The short answer from my experience was No. The clone TS would not clear the new PS ECM codes and allow it to run the programming script. I purchased a 2day professional diagnostic subscription to TIS and got access to what I needed. However, getting the cheap cable to work with the "real" TIS software was borderline impossible.
The short answer from my experience was No. The clone TS would not clear the new PS ECM codes and allow it to run the programming script. I purchased a 2day professional diagnostic subscription to TIS and got access to what I needed. However, getting the cheap cable to work with the "real" TIS software was borderline impossible.
Last edited by mikellucci; 07-26-14 at 08:29 AM.
07-28-14, 10:10 AM
#29
To clarify things, it looks like the loss of power steering is not an issue., but it seems to only happens to some people.
Not sure why I kept getting communication errors, but eventually my unit was able to successfully calibrate. After calibration completed, power steering came back and no issues since.
My 'PS' light never came on, even though techstream said it should have. I ignored the warning and continued without any issues.
Not sure why I kept getting communication errors, but eventually my unit was able to successfully calibrate. After calibration completed, power steering came back and no issues since.
My 'PS' light never came on, even though techstream said it should have. I ignored the warning and continued without any issues.
07-28-14, 10:30 AM
#30
Glad to see your issue being resolved. Look like disconnecting the battery for 10-15 mins and reconnecting it back together with calibration at the dealership fixes the problem.
What difference do you feel when there is no power steering assist?? Also, the real question is, how does it handles now with the ISF ECU?
What difference do you feel when there is no power steering assist?? Also, the real question is, how does it handles now with the ISF ECU?
I took yalls advice and drove down to the dealer on the stock ecu, then swapped it in the parking lot. Luckily they were able to get it calibrated without issue. I cant tell you how relieved i am! I just don't understand why im the first person to do the ecu swap and it provide no power steering assist at all until calibration. Plus what was with the other issues, who knows.
Whats the scoop with the techstream cable, is this something I should look into?
Whats the scoop with the techstream cable, is this something I should look into?