ItzFilyO

np20412

It doesn't retard the downshift, it just allows you to get the maximum downshift on command. In cars that don't have this, there is a notable lag before the maximum downshift (this is because the transmission takes a second to realize you really want WOT before it goes to maximum downshift). Hitting the button let's the transmission know immediately that you want the full downshift.

IMO it's kind of useless these days with the advent of manual modes and paddle shifters.

Knucklebus

With so much computer controlled technology, detents are more or less a hold over.

In the old days, things were cable controlled and that was the analog of a throttle position sensor.

ItzFilyO

The GS with 6 speed doesn't have this right?

lamikela1

My understanding is the button below the pedal is used to activate the direct injection on engines equipped with both Port and DI. Supposed to get a bit more power.

JDR76

I believe this is correct as mine does not have hit.

Patrick4GS

iTrader: (2)

6 speed here, mine doesn't have it either.

kinglexus99

IMO its easier to mash the left downshift paddle until you hear the warning beep, lol. I love doing this on highways in my '16 gs. She wakes up and flies