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Holy Crap you guys.....sneaky ECU reset WORKS!!!

 
Old 05-15-2006, 01:58 PM
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05' E55
If I reset my ecu everynight will it affect anything in the long run ? I figured if I do it everynight the next day the car will drive great all the time.
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Old 05-15-2006, 04:32 PM
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'05 E55 CapriBlue
how can you tell it works?
i did mine this morning and drove thru busy traffic
but didnt feel any push
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Old 05-15-2006, 08:01 PM
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Hrm, I'll try it tomorrow.

I swear to god, the ECU is evil. Kleemann, Renntech and now even a reset brings out the beast. We have to blame the ECU for not letting these cars reach its maximum potential.
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Old 05-16-2006, 04:43 AM
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Just tried it because I figured what do I have to lose, and to tell you the truth I thought it was my head playing games with me, but it definitely felt faster and alot "smoother" if you know what I mean...
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Old 05-16-2006, 04:45 AM
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No longer stock '06 E55, A3 3.2 Quattro, LRD4 HSE, R107 280SL
OK - sceptic here , but I will try it soon.

In the mean time can anyone explain how resetting the tranny history gives you more go ? Has got nothing to do with engine mapping .... just shift points. So out of the hole car will be same if not worse I reckon.

BUT I will try it and see for myself.
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Old 05-16-2006, 07:49 AM
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C55AMG W203; 330i E90
one explains

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Old 05-16-2006, 09:20 AM
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12' C63 P31, 06' Supercharged Range, 08' BMW 550i
So who's going to be the first to run their car at the drag strip and then do the ECU reset to compare times?
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Old 05-16-2006, 09:26 AM
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2011 CL63 Palladium/Anthracite
Originally Posted by stevebez
OK - sceptic here , but I will try it soon.

In the mean time can anyone explain how resetting the tranny history gives you more go ? Has got nothing to do with engine mapping .... just shift points. So out of the hole car will be same if not worse I reckon.

BUT I will try it and see for myself.
I think that the car uses the gear ratios better now than before the reset. You are always in optimum gear so if you squeeze the trigger, your car leaps forward in third rather than trying to rely on the torque and struggle in fifth.
Its like riding a mountain bike: try to accelerate uphill in high gear and then drop down a few cogs and voila, you are now overtaking joggers!
Also, the accelerator pedal is much more sensitive so if you are pressing it down as much as you used to before, you are probably getting 20% more juice flowing into the injectors.
I just did my first full tank refill after the ECU reset and got a 5% mileage improvement! It just gets better!

Last edited by Rafal; 05-16-2006 at 09:29 AM.
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Old 05-16-2006, 12:36 PM
  #59  
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2006 ML500
I just tried this on my 03' CL600.

Being non-AMG, in the past the tranny seemed extremely unresponsive when asked to downshift..sometimes it just wouldn't do it no matter what at slow speeds (unless I changed gears manually).....which is really needed to get the turbos going.

However, after the ECU mod, the car didn't hesitate at all to downshift and it went right into boost which makes it feel like an entirely different animal. This solved one of the major problems I had with my car!

SWEET!!!
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Old 05-16-2006, 01:03 PM
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C55AMG W203; 330i E90
Originally Posted by red00lght
I just tried this on my 03' CL600.

Being non-AMG, in the past the tranny seemed extremely unresponsive when asked to downshift..sometimes it just wouldn't do it no matter what at slow speeds (unless I changed gears manually).....which is really needed to get the turbos going.

However, after the ECU mod, the car didn't hesitate at all to downshift and it went right into boost which makes it feel like an entirely different animal. This solved one of the major problems I had with my car!

SWEET!!!
Yes, also my major problem solved!
Sounded like everyone had the same issues Before the reset, my biggest concern was , unlike the old days, the car is no longer able reach 176/kmh within the kind of timing I used to get keeping the same driving style. Now, the throttle is more responsive and it seems every gear change I could reach a higher rpm without putting extra effort on the fuel pedal. The kickdown works again as it was never. I was just about to make a big compliant to MB as I thought all that issues were because they never changed the sparks plugs, tranny oil , air filter at now 28000km! But now, it seems if they ever do , the car will be even better!

I am curious why MB service center never did a 'reset' for my car?
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Old 05-16-2006, 02:51 PM
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07 G35 Sport 6MT, 2005 C230K SS (sold), 1998 Jeep GC 4x4 (da-heep!)
Dumb question:

Don't suppose this would work for slow 230s w/ manual trannys would it?
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Old 05-16-2006, 04:17 PM
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4 wheels
Give it a shot and find out.
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Old 05-16-2006, 07:38 PM
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SL63 | GT-S
Will this work on an R129 SL600?
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Old 05-16-2006, 07:59 PM
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SL63 | GT-S
Just reset the ECU in my car. Will provide some feedback after I drive it tomorrow.
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Old 05-16-2006, 08:23 PM
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The only difference I felt was that first gear was punching hard! From a 15 mph roll, the S430 actually chirpped the rubbers and made traction control kick in for a bit!

Other than that. Not much. I'm gonna try resetting it again.
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Old 05-16-2006, 10:50 PM
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AMGs
ECU resets

Alright... So I finally decided to reset the ECU in my other two older Benzs...

First, I went through the steps with my 01 E430 and magically it appeared to be a little smoother and a bit more responsive... (I am NOT sure if this is due to the 4 new tires I replaced and immediately performed the ECU reset).

Secondly, I did the same steps with the 02 CL55 and I dont think it helps... Or may be a little bit... Perhaps I had this notion/image in my head that the RESET will make it smoother on the CL55? May be it didnt work!

Last edited by 2K6E55; 05-16-2006 at 10:53 PM.
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Old 05-17-2006, 12:11 AM
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'10 MB E63, '08 ML550 ('05 E55, '05 SL55, '08 E63 GONE)
WORKS on a SL55... though all my settings (i.e. folding mirrors, etc.) were set back to default.

Funny, when I first got my E55 my GF was saying that the car seemed "twitchy" and had one of my employees complain mildly about my "jerky driving". When asked later and they said no... that "I got better...".

Well, I had the GF in the "reset" SL55 yesterday and she said... "You're twitching again..."

The car is certainly more responsive to slight throttle changes after a reset.

~ Ian
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Old 05-17-2006, 12:30 AM
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C63
Tried out the ECU reset. I noticed something else with the reset. I had a problem with my sunroof after I let the battery completely discharge. Basically the sunroof wouldn't open. After doing the reset it now opens however it only opens a couple inches each time I press and hold the button down. Found that interesting.
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Old 05-17-2006, 12:31 AM
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Originally Posted by nrgy
Tried out the ECU reset. I noticed something else with the reset. I had a problem with my sunroof after I let the battery completely discharge. Basically the sunroof wouldn't open. After doing the reset it now opens however it only opens a couple inches each time I press and hold the button down. Found that interesting.
It's kinda like disconnecting your battery.
Re-sync your windows.
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Old 05-17-2006, 12:50 AM
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Originally Posted by IanSL55
WORKS on a SL55... though all my settings (i.e. folding mirrors, etc.) were set back to default.

Funny, when I first got my E55 my GF was saying that the car seemed "twitchy" and had one of my employees complain mildly about my "jerky driving". When asked later and they said no... that "I got better...".

Well, I had the GF in the "reset" SL55 yesterday and she said... "You're twitching again..."

The car is certainly more responsive to slight throttle changes after a reset.

~ Ian
Funny, I feel the same way. The car is more twitchy because for the same amount of effort in the right foot we are getting more gas. We just need to get used to this new throttle response and be less of a lead foot!
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Old 05-17-2006, 01:35 AM
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Wonderful. Works exactly as advertised. Nice work.
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Old 05-17-2006, 02:12 AM
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2006 C230 SS
Originally Posted by Rafal
Phwoaaah! I just did mine and after a quick test drive had to come back home to change my underwear!
This car just rips up the tarmac and the orange ESP light (which I hardly ever see unless I am taking a sharp corner too fast) stays on for 100' in a straight line after launch! I really struggled to keep it on a straight and narrow on a suburban street.

From now on, every night after parking my car in the garage, I am going to
"tune it up" so it's ready for the next day! Thanks for the tip!
oh wow... you just made me realize why my yellow light no longer flashes... the car is use to my sharp turns... holy crap... haha...
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Old 05-17-2006, 10:48 AM
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Just tried it...works fine...but not too good on the tires.
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Old 05-17-2006, 02:03 PM
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SL63 | GT-S
Drove the SL600 this morning after resetting it last night. The car comes with the driver-adaptive transmission and it felt like it shifted and accelerated much more smoothly. So either it really works, or I am feeling the placebo effect.
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Old 05-18-2006, 09:58 AM
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C55AMG W203; 330i E90
Two little observations after reset , may or may not be caused by the reset, would like you guys to check if yours are still normal.

1. Bi-xenon auto levelling seems working funny or not working at all, one (or both ) of the headlamp light beam seems not pointing far enough.

2. The steering wheel seems not returning to the memorized location after door closed.

Thanks
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