PsssTkiD

i was waiting in the car....and the car engine was off....i was playing with the gas and pressing it all the way, then theres a button!.. wut is that for?

I KOMPRZ

thats a kill switch to prevent you from flooring your car.
or this that your NOS button? :p

hahah j/k....I've never noticed there was this thing.

PsssTkiD

ill see wut happens....

i should drive around ...then reach that button with my left foot and see wut will happen.... lol

I KOMPRZ

maybe you will get extra boost ....lolz

W Cole

You've never felt the button before while driving? Man i must floor my car at least 10x per day. Anyways, thats the kick down switch, when u floor it and hit that button it will kick down the transmission into the lowest gear possible. I'm not sure the advantage of this setup.. it seems like a poor design to me, if I have the gas pedal pressed down that far, I expect the transmission to be in the appropriate gear already, I wouldn't think there would be a need for a switch.

BTW, there is logic built into the system - if the pedal is not pressed down all the way tapping the kick down switch does nothing.

PsssTkiD

why would it be a kick down switch though?.....i mean..if u floor the car and reach that button...then the RPM should be in the more than 4/5000 already...if the gear goes down..then...the engine will blow up!.. lol..

blkc230k

its a kickdown switch correct. i think when its pressed. it held up the RPM to the maxiam range before shift... 6200rpm

W0n6_3d4n

That button also override speed limiter.

Josh K

Uh, no it doesn't. I've had my pedal to the floor and still been shut down at 135.

wingless

The WOT, wide open throttle, switch. When actuated, the engine ECU uses a different map, with greater emissions, to motivate at a greater rate.

W0n6_3d4n

Not the governed speed limiter, but the user set up speed limiter. You may not have it over there but it's a standard feature down under.

gaiex

I had a 98' automatic CLK200K and it had the switch and it was great

One question, I have my coupe, a diesel one, with 6 manual gears and it have the switch too!!!
Does it do anything, I didn't noticed yet???

JeT

Hey Rez, do you actually use it?!! I've probably used it once...its annoying because you can only set it in 10km/hr increments.

W0n6_3d4n

Yeah i used it when i went to get my licence , to make sure i wouldn't overspeed.

mctwin2kman

It is to tell the ECU that the Drive By Wire Throttle is at Wide Open Throttle on all models. Also is the kickdown for the auto tranny. The tranny by design will only drop one gear lower unless you hit that switch. So if you are going 40 MPH in 5th and floor it but do not engage the kickdown switch you will only drop to 4th gear. The switch tells the tranny controller to drop to the absolute lowest gear that can be used so at 40 it would drop to at least 3rd. I even have this on my 190E, it uses a standard bowden cable for downshifting but at say 25 I am in 4th if just cruising, so it will only drop to 3rd. Well I want 2nd so I push hard enough to engage the switch and then my transmission drops to 2nd for me. Also in that car it forces a 1st gear start as opposed to 2nd gear which is normal. Its main purpose though is WOT!

PsssTkiD

thank you people for filling me in.

i thot it's a self-destruct button...LOL....i was scared to use it

zygote

Yeah, same as the auto's in that it will cancel the speed limiter (UK model), but I think that's all. Haven't noticed any difference in acceleration in my 6-speed when flooring it though, so I think the ECU remap thing only applies to auto's.

Deutscher_Wagen

that button get's pressed like 35 times a day in my coupe

Does anyone else notice that it tries poping back out after 1~2 gears? Example: from still stand, floor pedal activating button & hold, stiffen your neck as you take off and watch the ESP triangle flash at you, after 1st gear with auto it feels like the button is trying to puch back out. Now I can push a little harder to keep it in, but if I don't pay attention, it'll pop out.

Anyone else have this?

CclassRun

its also a magic fairy carwash button. if you hold it down long enough, tinkerbell comes out and washes your car...inside and out!

mctwin2kman

Yeah it is due to the shift of weight during the 1st to 2nd shift. My 190E even does that due to the little thrust due to the gear change. I have to actually think to keep it held down. My body just must move enough to lift my foot a hair of the throttle!

tyro

You guys are all crazy It sends out a signal to the police that you are speeding like the Road Runner (beep beep!) and identifys your car

Rick

I thought the button taught you how to spell "what"(not "wut"), "thought"(not "thot") and proper punctuation.

PsssTkiD

so, wuts with the hate?

Deutscher_Wagen

Yea, we thot you wasn't like dat.

CitronC230K_03

its the turbo boost button. now if we can only find the red light on the Hood like KITT had!