Jun 17, 2015, 03:24 PM
Last edit by: IB Advertising
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- Mercedes-Benz E-Class AMG: How to Reset Your ECU
Step by step instructions for do-it-yourself repairs
Holy Crap you guys.....sneaky ECU reset WORKS!!!
Member
Joined: Feb 2003
Posts: 192
Likes: 12
From: Los Angeles
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Figured what the hell, and gave it a shot per the instructions someone posted. I get her out and punch it from a start and it feels weird....a bit unstable. I am like great, I broke something, then I realize it is pulling like a friggin freight train and my a$$ is wiggling. I can't wait til the ECU sets me up this way....maybe better, that would smoke.
Anyway proceeded to do some launches and I can really tell a difference in shifts. Someone said it best....feels like the car had a tune up or something.
I COMMAND all of you to try this (well if you are not happy with your current setup). I just know now my car set me up wimpy due to long highway miles after driving back from Klee. Enjoy!!!
1. Turn the ignition key to the on (not start) position.
2. Press the gas pedal to the floor and hold for five seconds.
3. Turn the key to the "off" position (don't remove the key), then release the gas pedal.
4. Wait at least two minutes for ECU to reset.
Anyway proceeded to do some launches and I can really tell a difference in shifts. Someone said it best....feels like the car had a tune up or something.
I COMMAND all of you to try this (well if you are not happy with your current setup). I just know now my car set me up wimpy due to long highway miles after driving back from Klee. Enjoy!!!
1. Turn the ignition key to the on (not start) position.
2. Press the gas pedal to the floor and hold for five seconds.
3. Turn the key to the "off" position (don't remove the key), then release the gas pedal.
4. Wait at least two minutes for ECU to reset.
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
It will not mess up your tune , as it just clears out codes/ resets fuel trims and the ECU has to technically relearn your driving. You can run a little lean, right after a reset until the fuel trims re-calibrate. You also have to reset all your windows , sunroof etc.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Banned
Joined: Feb 2008
Posts: 0
Likes: 118
It will not mess up your tune , as it just clears out codes/ resets fuel trims and the ECU has to technically relearn your driving. You can run a little lean, right after a reset until the fuel trims re-calibrate. You also have to reset all your windows , sunroof etc.
Senior Member
Joined: May 2014
Posts: 414
Likes: 11
From: Victoria, Australia
04 E55
If you're worried it will wipe your tcu tune, it won't. It will just reset the adaptations and take it back to the unmodified TCU tune that you paid for. If that makes sense.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
Absolutely correct. The TCU adaptations can only be reset with STAR after which there will be a noticeable change in the shift points and speed, however, the adaption algorithm will immediately begin to adjust to your driving style. On that note, if you have a healthy transmission and you're not already using Fuchs 4134 ATF, next time you service the 731 you will be amazed at the overall improvement that stuff makes (FWIW).
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