adaptive transmission
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
adaptive transmission
Does anyone know if there is any way to disable this feature on our transmissions without doing a ridiculously expensive tune?
Im sure everyone notices it in our cars but its even easier to notice now that i did my engine swap. In a matter of days my tranny went from holding gears and revving high on its own to not having a clue what gear to be in.
I know i can reset it but I dont wanna drive my car hard or speed every day just so i could keep the tranny shifting fast.
I just had the trans serviced too and it all looked good. No shavings of any kind in the pan
Im sure everyone notices it in our cars but its even easier to notice now that i did my engine swap. In a matter of days my tranny went from holding gears and revving high on its own to not having a clue what gear to be in.
I know i can reset it but I dont wanna drive my car hard or speed every day just so i could keep the tranny shifting fast.
I just had the trans serviced too and it all looked good. No shavings of any kind in the pan
Banned
Joined: Feb 2006
Posts: 0
Likes: 36
did you do the ecu re-flash?
how is the performance with new engine and ecu tune, did you do a dyno job?
ARE YOU HAPPY?
is it a different car from before?
does she purrrrrrrrr more from exhaust?
how is the gasmileage on normal driving vs fun driving?
maybe your trans is worn and slipping gears?
driving the car like a frequent speed demon will learn the trans to stay in sport mode all the time
how is the performance with new engine and ecu tune, did you do a dyno job?
ARE YOU HAPPY?
is it a different car from before?
does she purrrrrrrrr more from exhaust?
how is the gasmileage on normal driving vs fun driving?
maybe your trans is worn and slipping gears?
driving the car like a frequent speed demon will learn the trans to stay in sport mode all the time
Super Member
Joined: Nov 2011
Posts: 949
Likes: 47
From: San Diego
2004 E55
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
did you do the ecu re-flash?
how is the performance with new engine and ecu tune, did you do a dyno job?
ARE YOU HAPPY?
is it a different car from before?
does she purrrrrrrrr more from exhaust?
how is the gasmileage on normal driving vs fun driving?
maybe your trans is worn and slipping gears?
driving the car like a frequent speed demon will learn the trans to stay in sport mode all the time
how is the performance with new engine and ecu tune, did you do a dyno job?
ARE YOU HAPPY?
is it a different car from before?
does she purrrrrrrrr more from exhaust?
how is the gasmileage on normal driving vs fun driving?
maybe your trans is worn and slipping gears?
driving the car like a frequent speed demon will learn the trans to stay in sport mode all the time
I didnt do a dyno but performance is night and day. I am really happy with the results. I dont ever have to be above 3k rpm. The car just pulls. It gets up to 60 easilly so weaving through traffic and overtaking is done with little effort and no need to downshift.
the exhaust seems more quiet but maybe thats because theres no need to high rev the engine
. At startup it sounds more immediate if you will. Gas mileage seems better but again thats because theres no need to drive her hard. All it takes is an inch of throttle to be moving fast.
Tranny was just resealed and reserviced. No shavings was found and my mechanic is sure that its in good shape. It shifts fine when its reset but then it gets lazy. Its easy to notice. I know how to reset the tranny but i drive slow to work and back so it becomes lazy again very soon. I wanna permanently get rid of that featurw
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Del Rio, TX
98 C43,99 gsxr 750
I'm not sure if the ECU or TCU stores the keep alive memory for the shift strategy. Which ever one it is, I would assume that you could add a relay(switch side of relay) in series to the ground circuits of the module in order to remove/supply ground. The control side of the relay would need to be wired into the ignition switch (or something else that gets power with the key on). This way, every time you turn the ignition off, you remove the ground to the module and then supply ground with the key on.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
I'm not sure if the ECU or TCU stores the keep alive memory for the shift strategy. Which ever one it is, I would assume that you could add a relay(switch side of relay) in series to the ground circuits of the module in order to remove/supply ground. The control side of the relay would need to be wired into the ignition switch (or something else that gets power with the key on). This way, every time you turn the ignition off, you remove the ground to the module and then supply ground with the key on.
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Del Rio, TX
98 C43,99 gsxr 750
In theory, this would work just like disconnecting the negative battery cable every time you turn the car off. I'm not sure if it would interfere with anything else in the car, but it has me interested enough to test this out. I'll have to check wiring diagrams to find out how the ECU and TCU are grounded and what else is grounded through those modules. You wouldn't want to reset the one-touch program for the windows every time you get in the car.
Trending Topics
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Del Rio, TX
98 C43,99 gsxr 750
Definitely want to make sure it wouldn't disable the electric locks and alarm when you turn the keys off! I'm sure every one here knows how much of a b**** it is in these cars if your battery dies with your doors locked.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
It's good idea, but isn't some kind of risky, during of Electronics age..!?!
there are some sensitive components, MAF-TB adapt./alarm/security/central module that controls window & adjust. seat/EIS/OCP, elt...!!
ZAYED,,
there are some sensitive components, MAF-TB adapt./alarm/security/central module that controls window & adjust. seat/EIS/OCP, elt...!!
ZAYED,,
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
Yea it does seem risky. I was hoping there would be a much simpler option.
I have my battery disconnected now for 15 minutes. Im gonna have my tranny reset.
I know it can shift better than this. Right now when i give it gas it pulls but then all of a sudden the rpms drop and i have to give it more gas. Few days ago it was all nice and linear.
I was driving it under 3k rpm almost all the time so it probably decided to go into grandma mode because of that
I have my battery disconnected now for 15 minutes. Im gonna have my tranny reset.
I know it can shift better than this. Right now when i give it gas it pulls but then all of a sudden the rpms drop and i have to give it more gas. Few days ago it was all nice and linear.
I was driving it under 3k rpm almost all the time so it probably decided to go into grandma mode because of that
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Disconnecting battery is good idea from while to while, as well as reset whole system via STAR/SDS,,
that's why i'm using lithium battery with switch ON/OFF instead of pulling cables..
ZAYED,,
that's why i'm using lithium battery with switch ON/OFF instead of pulling cables..
ZAYED,,
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Del Rio, TX
98 C43,99 gsxr 750
It would be no more risky than disconnecting your battery. Disconnecting your battery for an extended amount of time resets, literally, everything. The risky part, like I said, would be if it disables the locks and alarm and get locked out of your car. The annoying part, but not hurting anything, is if you have to reset the one-touch operation for the windows or set up your radio every time. I'm going to be looking up the diagrams on Alldata and do some research on the possible affects of this, if I get time today at work.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
Disconnecting the battery disables esp and abs and resets the windows for sure. I dont k ow what else gets reset but i dont think id want my esp and abs off constantly.
Id be curious to see what you discover
Id be curious to see what you discover
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Good point,
ESP/BAS related to the angle of steering sensor, it's also part of acc. sensor aka lateral sensor,
Disconnecting the battery many times or at least ground may harm the whole circuit,,
*love your great idea "Boost", but as you know; we have 15-18 years old brides, should to take more care about half souls of these Electrics..
ZAYED,,
ESP/BAS related to the angle of steering sensor, it's also part of acc. sensor aka lateral sensor,
Disconnecting the battery many times or at least ground may harm the whole circuit,,
*love your great idea "Boost", but as you know; we have 15-18 years old brides, should to take more care about half souls of these Electrics..
ZAYED,,
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
Just drove the car a little and went through gears manually revving it up as high as possible.
Driving it(in D) already feels so much better. Id assume the trany is reset and has picked up on more agressive shifts. Lets see how long it lasts
Driving it(in D) already feels so much better. Id assume the trany is reset and has picked up on more agressive shifts. Lets see how long it lasts
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Junior Member
Joined: Aug 2012
Posts: 34
Likes: 0
From: Del Rio, TX
98 C43,99 gsxr 750
I don't have enough time to do the research today and unfortunately I don't have access to alldata anywhere else other than the shop. I'll have to wait until monday. Hopefully it will look like it shouldn't be an issue. If so, I'll test it out and then do a write up.
After disconnecting the battery, the firmer and quicker shifts will normally last about a week for me.
After disconnecting the battery, the firmer and quicker shifts will normally last about a week for me.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
Ill look into this thanks
Thread Starter
MBWorld Fanatic!
Joined: Sep 2007
Posts: 4,566
Likes: 421
05 c55 silver, 98 Imperial Red C43
I don't have enough time to do the research today and unfortunately I don't have access to alldata anywhere else other than the shop. I'll have to wait until monday. Hopefully it will look like it shouldn't be an issue. If so, I'll test it out and then do a write up.
After disconnecting the battery, the firmer and quicker shifts will normally last about a week for me.
After disconnecting the battery, the firmer and quicker shifts will normally last about a week for me.
Do keep us updated
