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I've wondered the same thing... I think it may have been because there were a number of posts a couple of years ago on the old CL board where no one could really answer the question "how do I reset the ECU" and yanking the battery cable was the only way to get it done. Then someone finally read the fusebox lid.
I've only done the fuse method myself. Clean and easy.
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Originally posted by hubbard316 Where is the fuse located? Do I have to wait when pulling the fuse?
In the GS4 engine bay, if you are standing at the front of the car, it is just below the battery, and the cover can be removed with a little force, with no bolts, and the fuse puller is just inside the box.
Also, your questions have been discussed here and other threads at length.
Pulling Fuse? If you do reset ECU once a week, I would not remove the FUSE. Overtime the constant removing Fuse might loose the connection... Cost more in the long run replace Fuse holder. Battery terminal? Nothing to loose other than the memory.. How often do you listen to your radio?
Sold... 00 GS400 with some goodies still attached to the car.... hopefully some lucky buyer has it... LSD, TC, L-Tuned Exhaust, TRD Sway...
Uhm....I've been wondering about this for sometime now, why does someone reset the ECU ? I heard mentioned that it will reset the 'learning mode' of the transmission, is this true ? AN what other benefits exist ?
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Originally posted by lexusnexus Uhm....I've been wondering about this for sometime now, why does someone reset the ECU ? I heard mentioned that it will reset the 'learning mode' of the transmission, is this true ? AN what other benefits exist ?
Try reading the link I just posted - most if not all your answers will be contained therein
I reset my ECU yesterday. I left it out for about 90 min. It just so happens that before this, the UP/Down motion on ny steering wheel quit working. Yep, resetting the ECU solved this problem. As far as the performance benefit goes, on my car it really made a big difference. Maybe b/c it hasn't been reset since it left the factory and it is about to hit 60K soon. Clublexus and the info within is a priceless tool I am glad to have!
I try to reset my ECU tonight and try to pull the fuse beside ECU which is bigger and I was not able to pull it use the white plastic tool and my hand. Your post remind me that I should able to do it which means something wrong then I found out I almost pull the wrong one. Thanks!!
BTW, throttle response is immediately and it won't jump when I lightly apply the gas. Dexter!! Thank you for the great information.