Auto Down Shift in "S" Mode
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I was driving an IS-F the other day and the car's transmission automatically down-shifted, including to 1st, when in S Mode. I tried today in my IS350 and nothing. Anyone know if this is something that can be programmed.
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The IS-F's transmission allows it to be shifted like a manual using the paddle shifters. However, on the ISx50's, its simply a top gear limiter. Whatever gear you have it in, the car won't shift past that gear, but it will shift freely between any gears below it.
I don't think anyone has been able to mod this into a ISx50 yet, probably because it would require reprogramming the computer to allow the transmission to do so.
I don't think anyone has been able to mod this into a ISx50 yet, probably because it would require reprogramming the computer to allow the transmission to do so.
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The IS250/350 use shift limiters that automatically shift up to whatever gear you select. For example if you set it to 4 the car will shift automatically but will never go past 4th gear. Only the IS-F will shift when you use the paddles.
Edit: Killa beat me to the punch! =D
Edit: Killa beat me to the punch! =D
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My IS250 also downshifts automatically in S mode.
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You can downshift all you want by limiting the top end.
you cannot however upshift to any gear you want because there is no practical application other than the intent of killing your transmission. For example if you are going 5mph, why would you even want to shift to the 6th gear?
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In my experience the car does downshift to 4 when you move over to S mode. I can tell because the the rpm's increase slightly.
Last edited by Pnthrzrule; 10-23-11 at 02:02 PM. Reason: needed to add 4
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The IS-F, drops the gears to 1 (at a stop) if you don't shift down. Much different paddle shift experience that I wish was a "mod" or "re-program" for the IS X50. Oh well....
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Your IS 350 though will down shift automatically. Just hit the display button on your steering wheel to show you the actual gears.
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This car is my first automatic.....is it safe to down shift using the paddle shifters while in S mode? I know all about RPM's and being "safe." But is it hard on the automatic tranny to downshift with the paddleshifters say when your coming to a light.
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You can play around with the paddle shifters all that you want and it wont' hurt your car. Even though you are telling it to downshift the computer still handels everything. As for using it for engine breaking, it will not harm the car, but it puts alot of stress on the tranny. If you think about the the tranny is ment to keep you moving forward, your breaks and designed to turn kinetic energy into heat. I want to keep my tranny is optimal condition for as long as possible, however break pads i'm willing to replace whenever they need it.
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The IS-F DownShifts to first gear at a stop if you don't touch the paddle. When in S Mode, my 11 IS350 isn't showing a reduction in gears (ex. 4, 3, 3, 1) unless I shift it.