I designed a custom TCM for my Mercedes - CUSTOM MERCEDES 722.6 TCM project part 1
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- Опубликовано: 18 окт 2024
- This is the first part in a new series, where I will be documenting the process of creating a custom #opensource Transmission control module (TCM) for my modern #Mercedes vehicle, using the #ESP32 micro-controller!
In this part I will discuss the history of the TCM in this vehicle, as well as taking a look at
some of the issues the gearbox has, and which ones can be fixed with a new controller (software issues), without having to service the gearbox itself.
If you guys have any questions about the project, please do say so in the comments below.
The TCU is now live!
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Hi. It's a little late. But. When you release the accelerator, an unpleasant jolt almost constantly occurs. If you select only the first gear and drive it, then there is no push when you release the accelerator. Also, if you select the second gear and drive it, then there will also be no push.
Follow up video (More technical in-depth look!): ruclips.net/video/PkfYW9OuHKA/видео.html
I live for stuff like this.
Continuous open source progress in daily lives.
Really as guy that works in mechanic/diagnostics of MB vehicles I’m more than impressed! Huge respect for what you‘ve came up with! Keep up the great work ! I’m here to stay !
Wow, I truly adore what you are doing. This could change the entire aftermarket solution business for these transmissions, there is a ton of them and are installed in very recent cars as well. I am too a proud owner of a W211 220CDI with 722.6 but the transmission is troubling me. The problems are shuddering, flaring mainly in 3rd and 4th gear, harsh TCC lockup in 2nd, erratic and elevated idle RPM (should be around 600RPM, mine goes up to 900). I have to play with the gas pedal in order to stop the transmission from shuddering. I've been investigating forums and videos, studying all transmission components to figure out what could solve the problem, but I have not found a definitive answer even when this is a common problem among many 722.6 owners. I think it is related to oil pressure issue rather than a mechanic failure. The problems only occur when the oil temperature rises a little bit, but almost disappear after the oil is at 80 degrees Celsius. The higher RPM remain though, with them dropping to 600 from time to time.
I hope this helps you somewhat and I wish you good luck with the project. Keep it up, hard work pays off and it will when your TCM is finished. This is how millionaires are born :) Cheers
Transmission controller /computer not working correctly. What to do?
A. Have the vehicle taken to a professional and pay out the ass for labor as there is no guarantee of a fix ($100 Hr avg. in the States) and then you still have a badly designed unit
Or
B. Figure out why the factory unit sucks and build yourself a new computer to control the transmission on your ride
If any viewers chose B then your a Gear-Head.
This guy is inspiring, it's hotrodding at its finest and I salute you sir
This boy is fvckn genius
Man you did godlike work on that new PCB , very very neat.
This is rad. I think for my use, I will make a custom tune for my sprinter's TCM via Kess v2/JTAG. But your controller looks awesome, and way better than stock. Really cool to see you getting CANBUS functionality into it as well. Thanks for sharing this.
You're genius! Your work will help lots of people. I have a 2002 C240 which has 722.6 gearbox, now running fine. But I hope you will sell this board in the future, I wish the gearbox is a little better, have a bit of customization like not holding to first gear when cold.
Amazing work my friend 👏👏
Just saw someone on the video about W221 S63 reviewed by JayEmm on Cars commenting some guy from Reading, building new TCM by himself 😅
I have now 9GTronic MCT in my S63, hope you will work one day on this 😊👍
Been following this for a while. Great work. I currently have three 722.6 Vehicles and luckily no issues. Wish there was a replacement board for the 722.7, I've had to junk two cars already from unfixeable 722.7 TCUs.
Great job Mate! My ML350 W163 got exact same issue as your Merc. I'm planning to order PCB since I'm going to install supercharger in it and I need better solution for mapping gearbox. One question: would you mind to send me list of the components for ver. 1.3? I've tried to use tutorial from provided link at Github but I don't know how to export list of components.
Very proud of you and work you have done, peace!
Amaizing and congratulation. This a great milestone
Looking good. This is very interesting. I am currently starting an engine computers build. If you can build a universal application, this would be ideal for alot of manufacturers. The burning question. Have you checks the speed sensors for metal debris. It will bugger up the signal for input output shaft speeds. Leading to terrible shifting and it feels like it software related. But it eats the torque converter and piles more metal on the sensors. Self diagnosis doesn't get any results unless you oscope the speed sensors. Even then, there a switch and the slew rate is slowed. Sending the tcm garbage data. This has been a really common problem. The speed sensors are facing straight up and collect the debris very well. Just thought I would let you know the common issue that feels like program could fix it. But it's a physical sensor getting junk on it. Pretty simple repair. Drop the valve body and you will see what I am talking about...
Wow Good work! Really interested in seeing if you could make one work Stand-Alone 722.6 with an OM606. I would buy several TCU's if it works
I don't ever plan to make a Stand-Alone one. Solutions like SSCG and OFGear already solutions for that. Mine is a drop in for the OEM EGS52/53 units in existing Mercs from 2000-2012. Different target markets :)
Well Done! Great job
Awesome work! Can you make the EasyEDA project open source please? I would love to contribute.
Very impressive good work
Rc protection is a tricky one. Forward voltage drop on the diod is a the reason you might not receive ful vcc. Depending on the voltage regulator you might not have the extra voltage to drop.
do i did the platine change in my gearbox, above my mechatronik unit in my 722,6 and a oil change and filter change ofc, it worked fine again some time, after it broke down again dont wanting to shift out of 2nd gear or above, then when locking up in the gear i needed to turn off the car to even get it out of neutral into reverse or park, then i replaced the shifter, there were some broken off pieces so i think that was the problem there, now all works great its just that the cars 1st, to 2nd shift is a bit weird, like its not kicking or something but when accelerating, it goes a bit over the top with the rpm and then like draws back, sound like the clutch converter lockup you talked about, would the tcm change that for me ?
i can't stope watching your videos!! can i have one your custom pcb !!
If you want you can check the website!
Hi, I’m happy to purchase and trial TCU
My cars in limp mode and I simply want to drive the car till the gearbox is completely shagged
What an amazing video are you selling those TCM I would like to purchase one
Hi... Wil this work on a Daimler-Benz 5G-Tronic W5A580, from a Jeep Grand cherokee with mercedes 2.7 cdi and mercedes gearbox??
Thanks..
GREAT WORK
cool! I want one
Do you have a wiring schematic available for installing one of these in a non-Mercedes vehicle with a Mercedes engine and transmission utilising an aftermarket ECU?
Do you ever plan on making one of these compatible with a W210? I’ve got a 722.6 in my W210 with the OM606 diesel and I want to retain all of the factory modules. I get the flaring while shifting and when cold the gearbox doesn’t like to shift. I would absolutely buy one of these if they are compatible!
You are just great.
That’s insane! Is there any chance you could modify the older EGS51, it also has similar problems and I believe more primitive than the 52
Nice, i would like have custom tcm in my audi with zf 5hp19 gearbox
Hello, I have 722.6 in a 2012 Jeep Grand Cherokee, 70,000 miles, the TCC comes in harsh when the oil is cold and in my opinion way too early in the rev range. It has a very aggressive economy regime and this problem is common in mercs and sprinter vans and Jeeps with this box. I have often thought 'I wish I could reprogramme the controller to lift the revs threshold when cold' ( I was a mechatronics engineer, now retired) . When it's very very cold it does disable the TCC anyway, but mid temperature it doesn't. I came across your brilliant PCB, how do I contact you to purchase an assembled and coded one? Do you have a website to sell them? The real problem I understand is that there is an internal leak in the torque converter but the rubbish software means it cannot cope and you have to replace the TC and maybe fit a Sonnax revised damper valve in the valve block. Software is easier for me so i'd love to get hold of your PCB and code, how can i do that? PS. I also have a Mercedes SL350 with the 7 speed 722.9 but it again has rubbish software, maybe another controller project. It has flare and poor change performance, it's got 130,000 miles on it. It's the least sporty change ever, even in sport mode. Kudos on your work, brilliant. regards Guy Laughton
I wished this worked on the 722.9..🙈👍
Good luck with the project.
It can't. The 722.9s TCM is part of the valve body itself so playing with it is impossible.
@@RANDASH And also I think there are some security algorithms involved in receiving the CAN signals from other important ECUs. The signals likely aren't encrypted, but rather - verified using some message signing algorithm. Not knowing the keys means the controller won't be able to send some important signals to the Engine Management controller (and so - the engine will most probably stay in limp mode the whole time). This is part of the "theft protection" in vehicles made after 2009 (I think)
Already worked round that in testing 😉
@@RANDASH Would love to know more
awesome work! can i ask is there any intention to allow this to operate independent of merc ECU's say with other programmable ecu's?
I know exactly in software what causes shift flair and have fixed it. I have complete library calibration tables to all egs52 software part numbers defined. I could help you out with your issues u have.
How can I contact you to purchase for my Mercedes E211 estate 2,2 with 722 6 gear box
How did you design the shifting logic?
Does your tcm works in a clk320 1998, how much are you selling
How did u bring the can bus to the esp32 direct connection i dont see a tranciever i know the esp has can bus but i tought they were only 3.3 v
1998 mb slk230 722.6
@RAND_ASH can i use this as a standalone controller on my speeduino m113 setup ?
this is awesome. Will it work with W220 past 2003?
Does it comes for the 7 speed transmission?
2010
Doesn't need to measure current. They also don't want you to repair the vehicle. They want you to but a new one. Engineering to a price point.
Amazing !!
Great job done. You are very good.
My car uses a CRD2.20 ECU, Is your custom ECU compatible?
Cheers
What car and what year?
@@RANDASH apologies my mistake. You built a gearbox control, not the main ECU itself.
My car is W639, from 2013, it uses an CRD2.20 ECU. I need to check what gearbox box uses, I don´t remember.
Perhaps in the future... you can try to build a custom ECU
Hello will you make me one of these tcm?
Poly switch
its fused in fuse box- have fuse for gearbox
yes I am aware of that :), I wanted to make that clear in the video that the PCB itself does not require a fuse. Also Fuse box in the front of my car is PART of the SAM-F unit
@@RANDASH i think you dont need measurement current on each valve, because valves are active on neutral and parking (some valves pressures both and 3-4i think) and on shifting around half to one second. I have mounted LEDs on each solenoid, so i can look what tcu making ;)
ruclips.net/video/w1Lvg8oZZWA/видео.html here you can see
I can make video from drive if yiu want
@@caryfuk8 the reason for current measuring is to keep track in case a solenoid is going bad / short circuit. Hence why all solenoids have current measuring. The PWM solenoids will benefit the most from this though :)