Throttle Kickdown Button Behind Gas Pedal
#1
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This question was posed to me by my good friend with an ISF and i was directed to the this thread in the ISF section. So i wanted to inquire in this section
https://www.clublexus.com/forums/is-...gas-pedal.html
I saw in the ISF section that there is a "throttle kickdown button" behind the gas pedal. Apparently when you floor it, you havent actually floored it until that button behind the pedal is "clicked". After i saw this thread i went out to my 350 and there was the same button behind the pedal, the only thing is, its not as tall as the one pictured in the ISF which lead me to wonder if it is in fact the same feature at all.
Im not sure if anyone in the 250/350 section has noticed this as well, but, I figured i would ask. Since ive had my car over a year and just noticed that black button tonight. Any info on it would be awesome
https://www.clublexus.com/forums/is-...gas-pedal.html
I saw in the ISF section that there is a "throttle kickdown button" behind the gas pedal. Apparently when you floor it, you havent actually floored it until that button behind the pedal is "clicked". After i saw this thread i went out to my 350 and there was the same button behind the pedal, the only thing is, its not as tall as the one pictured in the ISF which lead me to wonder if it is in fact the same feature at all.
Im not sure if anyone in the 250/350 section has noticed this as well, but, I figured i would ask. Since ive had my car over a year and just noticed that black button tonight. Any info on it would be awesome
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#3
Instructor
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The button is hollow on the ISx50...its just plastic with no "button" and no wire sending feedback to the engine/tranny ecm, serves no function here.
I learned this while doing the ISF swap on my IS350. The ISx50 trannies do not utilize the switch while the AA80e 8 speed does.
I learned this while doing the ISF swap on my IS350. The ISx50 trannies do not utilize the switch while the AA80e 8 speed does.
Last edited by mikellucci; 02-20-14 at 08:14 AM.
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#8
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Yeah its in here somewhere
lol ![Egads!](https://www.clublexus.com/forums/images/smilies/pat.gif)
Also, that big blurry white wire plug/sensor atop the brake pedal.....why would lexus give us a different "Stop Lamp" sensor than that of the ISF? The things I'm learning....
http://i59.tinypic.com/2epq3xd.jpg
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![Egads!](https://www.clublexus.com/forums/images/smilies/pat.gif)
Also, that big blurry white wire plug/sensor atop the brake pedal.....why would lexus give us a different "Stop Lamp" sensor than that of the ISF? The things I'm learning....
http://i59.tinypic.com/2epq3xd.jpg
The 06-07 is different than the 08-13, but the ISx50 and IS F are the same.
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Jeff
#10
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![](http://farm4.staticflickr.com/3818/12672909033_a3148010cb.jpg)
You can see in the photo that I have pressed the button with my fingers.
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Last edited by UpSideDown; 02-21-14 at 02:39 AM.
#12
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There is no mention of the kickdown switch being added to any 2IS other than the IS F in any of the wiring diagrams, repair manuals or parts catalogs, they all list the same thing from 2006-2013.
In other words, that's super weird, and if it IS a switch, what's it connected to?
Madness.
Jeff
In other words, that's super weird, and if it IS a switch, what's it connected to?
Madness.
Jeff
#13
Instructor
iTrader: (56)
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Jeff, I know its added on the 2014 due to the tranny....
No clue if at some point lexus started adding it to prior year ISx50 aside from the ISF that we know. It is def. a dummy plate on my 06. The actual sensor uses s 2 wire connector common plug (90980-11156) and sends a signal to the tranny ecm and or the engine ecm. Lobuxracer detailed out the functionality in the F forum.
No clue if at some point lexus started adding it to prior year ISx50 aside from the ISF that we know. It is def. a dummy plate on my 06. The actual sensor uses s 2 wire connector common plug (90980-11156) and sends a signal to the tranny ecm and or the engine ecm. Lobuxracer detailed out the functionality in the F forum.
Last edited by mikellucci; 02-21-14 at 07:41 AM.
#14
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There is no mention of the kickdown switch being added to any 2IS other than the IS F in any of the wiring diagrams, repair manuals or parts catalogs, they all list the same thing from 2006-2013.
In other words, that's super weird, and if it IS a switch, what's it connected to?
Madness.
Jeff
In other words, that's super weird, and if it IS a switch, what's it connected to?
Madness.
Jeff
My car is Euro spec. Maybe its difference equiped to your NA cars?
#15
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Jeff, I know its added on the 2014 due to the tranny....
No clue if at some point lexus started adding it to prior year ISx50 aside from the ISF that we know. It is def. a dummy plate on my 06. The actual sensor uses s 2 wire connector common plug (90980-11156) and sends a signal to the tranny ecm and or the engine ecm. Lobuxracer detailed out the functionality in the F forum.
No clue if at some point lexus started adding it to prior year ISx50 aside from the ISF that we know. It is def. a dummy plate on my 06. The actual sensor uses s 2 wire connector common plug (90980-11156) and sends a signal to the tranny ecm and or the engine ecm. Lobuxracer detailed out the functionality in the F forum.
I definitely feel the difference when I accelarate in Normal mode by pressing it then without. As I wrote before, it instantly drops a gear lower and accelarate with full power then not have it depressed.
My car is Euro spec. Maybe its difference equiped to your NA cars?
My car is Euro spec. Maybe its difference equiped to your NA cars?
Japan and North American 2IS ISx50 models never used it.
Jeff
Last edited by Jeff Lange; 02-21-14 at 08:30 AM.