HoozyerdaddyC63

With winter and a back injury I have been laid up in my home doing nothing so when I recently took my car out for some fun I was bummed to feel some slippage shifting 2-3.

I have an EC tune and thought maybe I needed to apply it again since the battery was disconnected for a period of time. Same issue was there with or without tune.

I took it to the dealer who said there was a software update for the transmission. They applied the update and the tech said the shifts are really crisp now.

If I were to re-apply the EC tune, would I basically wipe out the transmission software update and be stuck with the shifting issues again?

CPD SLK

Good questions because I have a Velos tune....I'd want the update as well...are these free of charge?

Is the update for TC trannies or the facelift trannies?

m a x i m u s

I wonder if the software update entailed unhooking the battery...

AMG893

Eurocharged? Chime in?

HoozyerdaddyC63

I just got home from the dealer after picking up the car and I must say this car feels like a completely different car.

The software update was just for the transmission and it should be a free update. My guess it is pre-facelift, but I don't know for sure. Unfortunately nobody knew exactly what the update changed, but I can tell you I didn't even feel the car shift between 1-3. It felt like a single gear up to 70. Whereas before you could feel some really hard shifts 1-2-3.

Hopefully Jake or someone at Eurocharged will see this and be able to comment as I really love my tune and I have headers and full exhaust so I would like to keep the afr in an acceptable range at all times.

I am going to re-apply the tune and go out driving for a while since it is such a nice day. I'll post back and let you guys know if the tune changes things.

Merc63

7g or mct tranny?

synacide

id like to join you for this drive. i have to same eurocharged tune but am wondering if they wiped mine out also as i just got it back from the dealer wednesday after a transmission cooler line replacement. how would i know if i still have it.??

Hybrid42

The update ... Well was it for a 7G + ? Drive a E250 coupe in Bangladesh and my tranny has it's bad days as well ...

HoozyerdaddyC63

I have a 2010 so the 7g. The SA told me he had just done an update for a C350 and that it would be worth it to hook it up and see if it applied to my car as well.

As far as knowing whether or not you have the tune, I couldn't tell ya. Just re-apply the tune anyway if you think it got reset after your service.

I did some driving after re-applying the tune and it doesn't seem to have affected the shifting as much, but I did a lot of highway driving. My guess is the combination of the tune and the software update is solid. I feel like the car is new and a beast.

momo style

What kind of transmission the 2014 has? Does this software update applys?

HoozyerdaddyC63

2014 has MCT and I don't know if there is an update for that one. They had to hook up my car just to see if there was an update for mine. Maybe someone with an MCT can ask there SA to hook up there car to see if software update is available to them. I don't know if there is any other way to find out.

oneandonly5680

Subscribed for future reference...

m a x i m u s

this update is just for smoother shifts, or is it for quicker shifts as well?

C63DaKine

how do u know if u have MCT...?

on my gear selector it has M-S-A with circles around it...

HoozyerdaddyC63

I don't know what the update is for. I asked the SA and he said nobody knew exactly what it entailed, but it did improve whatever issues I was having with gear shifts.

HoozyerdaddyC63

Hard to say without knowing anything about your car. What year is it?

C63DaKine

2011

HoozyerdaddyC63

Based on wiki info you don't have an MCT.

http://en.wikipedia.org/wiki/Mercede...c_transmission

roadtalontsi

mct will have a rotary knob with C, S, S+ and RS (launch control) It's the same 7g transmission just has a wetclutch instead of torque converter

GRam

Does the update have a part # or service # attached to it so I can ask my service manager about it?

Tinbucket

So those of us making over 500 ft lbs, with blowers or, tunes or anything are gambling on the transmission???

loungn14

nope, your good

You guys are probably seeing transmission adaptations kicking in...

Autosport7

So if you have the updated TCU map installed by the dealer, as long as the dealer doesn't rewrite the ECU mapping, you shouldn't have to reinstall the EC tune correct?
If the dealer does overwrite your EC ECU tune and applies the TCU update, when you reinstall the EC tune, it will not affect the updated TCU map right?

Diabolis

You are gambling on the transmission and the engine itself. Did you really think that producing more power without beefing up everything else is without consequences? Why do you think car manufacturers will void your drivetrain warranty if you **** with the engine?

oneandonly5680

Can anyone chime in on Autosport7's questions...I have the same ones as I am looking to have this done when I have my loose gas cap and CEL looked at.