greedygremlin

I waanted to see if others had an issue with acceleration lag. If I try to pass and it takes a second or two to kick in.
Thanks

phatmanrx7

I was super annoyed with this.

Drive with it in "S" mode, I actually see better mpg in Sport mode. Its an automatic, so its always going to lag, but in "C" mode i find it almost dangerous sometimes.

Spec_Davis

getting an ECU tune or sprint booster can eliminate the lag.

mercguard87

Mine does too, terribly annoying.

Acapulco Bill

Do an accelerator reset:
Ignition switch in position 1
Press accelerator pedal HALF WAY DOWN
Turn off ignition switch still holding pedal, wait 10 seconds.
Wait 5 minutes before restarting car.
This will make the C300 behave as if a Sprint Booster was installed.
They are many threads and testimonies, search for "reset". Some think they are resetting the TCU (not true), but it is just a recalibration of the accelerator.

dadangman

that happens to my c350 also, i usually have to shift the gears myself to eliminate that lag.


hmm I might have to try that out

rich09

Did the pedal reset about a hour ago and drove... Man I could feel the differance

RLE

I think you are talking about downshifting, right?

lamonsas

Sprint booster? huh? what are you talking about? thats not possible.. if that was possible why wouldn't Mercedes enable that to begin with, why would anyone not want fast acceleration...

killerg

this sounds too ridiculous to be true, i am wishing it works though...

Blazeitup123

This works! did it last week and the car is much better.

valib24

it's a Mercedes, supposed to be all about luxury. It's supposed to have a smooth acceleration which it does. You try driving a BMW like that. My 335xi snaps my head back when I tap the gas, gets a little annoying. You can't really cruise with that car IMO

killerg

there exists a happy medium though

sapphire68

Thank you so much for the tip!
I did it just now and it worked like a charm.

jmayn

Do you need to hold the accelerator pedal down for those 5 minutes before restarting the car?

sapphire68

I just held it for the 10 seconds, and then switched to off position, left the key in, and stepped out of the car for 5 minutes.

denot

I thought the C class will calibrate the accelerator based on your driving? I've done the instructions on my C200 CGi but no different...

123benz

if i am not wrong, it does work, but it only work for a while as the engine will adapt to new driving conditions; hance you will have to do every so often.

Samieee

Do you leave the key in the ignition while waiting?

Acapulco Bill

@Samieee: No, once you turn it off from position 1, it doesnt matter, in or out. But OFF for 5 minutes at least before restarting car or turning to position 1.

encoder

I did this earlier... What I think is happening is, whatever position you hold the accelerator at, it will use that position as the throttle point where a downshift will always happen.

I did it, I didn't like it. Yes, i had more power instantly. And I do love driving aggressively. But most often I drive conservatively. And in those cases (75% of the time) i went to give a lil gas, felt the downshift, then just a moment later felt it upshift because I didn't ride the throttle hard after the initial downshift.

So I surmise that changing this is going to, for my driving style,contribute to a rougher ride and far more shifts.

I ended up alleviating it by re-doing the procedure only holding the throttle nearly to the floor during the training procedure. Slamming it down to trigger a downshift is preferred: It gives me more control.

lithium332

It definitely works, but after a week you gotta do it again. The halfway method might delay the time required between the resets, but it gets tiresome.

dadangman

y do you have to redo it? cuz the car relearns how you drive and the lag time will come back again?

lithium332

^Yeah exactly.

dadangman

damn i was happy for a second too haha, i reset mine too and i notice the difference, but if it's gonna go back to normal then fudge it hahah. manually shift it is more fun anyways =)