amg4john

1. Turn the igniiton key to the "on" position which is just before you crank the engine to start.

2. Press the accelerator to the floor and hold for 5 seconds.

3. Then turn the key to the off position but do not remove the key, then release the accelerator.

4. Wait at least 2 minutes, the ECU is then reset.

5. ECU is now reset and you are ready to get new rear tyres.

The ECU rest procedure only erases the adaptive transmission and throttle settings. It does not erase any of the fuel, timing or other programming




Will i lose my K1 tune? Will the reset change my shift points?

SonnyakaPig

To my knowledge, the C63 does not have this reset feature that other MB models have had.

There has been some talk about disconnecting the battery to reset adaptive values. Might be worth a try.

Even Money

Just drive the car harder...it will adapt fine.

cyberorth

This has been discussed before: you do NOT lose a tune by resetting ECU.

chris.bachman

It's not actually an ECU reset, regardless of the fact that it's come to be known as such. What you're really doing is resetting the memory module that controls transmission shift points. This procedure works on my C32 but like others have stated, I think this "hidden" feature is not available on newer models. Disconnecting your battery for 30 minutes does the same thing, however, at least on my W203, you need to reset the windows and sunroof after the battery disconnect. Hope this helps.

Sheep

Are you sure? I did this with my 2010 C63 and it seems to do the trick with my TCU.

Sheep

jvanbrecht

I do the same thing.. although it may be more of your own perspective and mind thinking it helps..

There has been no definitive answer on whether or not it works, but it also does not harm.

For the record, as others have mentioned, this (may or may not) method is for resetting the transmission shift points. There is no way to actually reset an ECU. By reset, I mean change firmwares that are installed, which is what a flash is, you are physically changing the code on the vehicles ECU, and that requires specialized equipment.

bluejae

reset windows and sunroof?

chris.bachman

Yeah, the one touch feature needs to be reset by holding the individual buttons down for 30 seconds.

bluejae

weird... so can you do this for all 4 windows from the driver door controls or do you need to go to each door's window switch?

SonnyakaPig

I don't know. I've never tried it. But, I've been told by various people that this feature is not available.

So, you're the first C63 owner that I've heard that it works for.

Maybe different MY's have this option.

Sheep

I am not 100% sure, but when I did the TCU trick it felt totally different. My mother drove my car for a while before me, and my C63 went into grandma mode... I just got back to the states so I will have to do the trick again to reconfirm.

Sheep