Smart Fortwo 451 not engaging reverse. TCU programming and relearning.
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- เผยแพร่เมื่อ 13 มี.ค. 2020
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Hi
This little Smart Fortwo, came to me because would not engage reverse.
Would engage forward gears, and would drive absolutely fine, but not reverse...
After remove, dismantle and lubricate the clutch actuator, the problem was still there, however next day, seemed to be working fine... obviously the problem wouldn't fix itself over night... a quick research, showed that this can be a common issue with this cars... follow me on this video to find out how to resolve it...
(As it might help someone out there, I found that if I would move from 1st to reverse really quick, reverse would actually engage, but if I would stop in neutral for a few seconds, wouldn't engage anymore....)
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching! - ยานยนต์และพาหนะ
great job well done I have these issues with 451 smart transmission so I have to do update the TCU software
Thanks!
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I had the same issue and used Delphi lead to do this seemed to work fine, I also read somewhere it will self learn after battery is disconnected for a while.
Instantly hit the Like button just before the video started... :D :) Amazing job, as always! :)
Thanks!
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Thank you very much!!! Please more videos about Xentry and coding, learning, etc...
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Will do my best...
Thank you for watching!
Right bro..that why am waiting every Sunday!!!! Good job .sami from Frankfurt..German..
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Thanks!
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That's really good i've not done any xentry coding/programming yet , interesting video not had that problem yet i will keep it in mind :)
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Thanx mate my car reverse did the same but sometimes I change fast to reverse and it works sometimes it’s doesn’t now I realise it’s has to change fast from 1. Thanks 🙏 man
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My 2009 Brabus fortwo has exactly the same issue. Thank you so much for the diagnosis. For the time being I am just going to stick to the quick change which I save up to have the local dealer do the firmware update thank again.
Thanks... for watching and for your comment!
Thank you very much. Wondering what was wrong with my smart.
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You did it right as always . The best thing you did was cleaning the shifter . In my humble opinion you could have gotten away with a relearn but better be safe then sorry
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Was only 3 more minutes for the flash...😊
Thanks... for watching and for your comment!
Thank you for another great video!!!
Thank you for watching and for your comment!
Good work. Had this stupid problem lot s of times
Thanks!
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Great job as always sir
Thanks boss....
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Another great result 👍
Thanks!
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Helpful information
Hi mate, excellent video. Where do you find software files for updates? I have recently opened my own garage after working in many dealerships. But do not want to pay for server access to do updates. How can I do the same as you? Would really appreciate some advice
Hi, were I can get the xentry and what version?
Hi i have same problem with a smart but diagnostic tool i have is delphi can you kindly help
sorry how to adjust the new clucth actuator and gears learning, i changed the clutch actuator
Great job as always!! Just a quick question. I just bought a 2005 MK2 Focus 1.6 101HP manual trans. Would it be beneficial to reset PCM adaptations in order to get a bit better mileage or any improvement in driving? Or is it any good reflashing the PCM with the latest soft version? Thank you for your advice!
If the car is driving fine, probably not...
But, worth to check for TSB to see if any flash has been released to sort any specific issues with that car...
Thank you for watching and for your comment!
i got 2 of these cars with gearbox issues, both stops during driving with gearbox stuck, to have car moving need battery disconnect reconnect, no issues in diagnosis, unfortunately i haven't tool that is capable of relearning or reprog the gearbox :( i think is the same issue.
Thanks for sharing Bro👍
Like always, awesome fix👍
Can Autel perform this reflash & what are other options for someone who own one scan tool?
&
You're Awesome😎
Autel does the Mercedes, but not the Samrt...go figure...🤷♂️
To flash, there is not many other options...
Thank you for watching and for your comment!
Hello brother, I have a problem that the car does not start smart 451 code p0603 please help me
Please explain automatic clutch for manual car to drive left leg disability
I had the exact same problem and went through all sorts.
In the end, I pulled the smart engine, all electronics and jins in the smart ECU's out and weighed them in scrap.
Dropped a Honda B16 VTEC bomb proof engine, gearbox and ECU and now with 160+ bhp, it fly's anf no more of this not so "Smart" nonsense.
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That's a way of doing it...
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Nice job very good
Thank you!
Nice job for your fans moroco
Thanks!
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I was driving my Wife's 451 when it made a loud bang then just stopped, in time the engine started but the shift wouldn't work in either direction. Before the incident the car seemed to struggle and made more noise than I would expect, the person we got it from said it was the ECU, a solenoid and software that would make the car work again but I'm no expert and am not sure I believe what I was told.
Loud bangs are usually never a good sign...
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It's usually the clutch actuator motor snapping.
Is it possible to buy this software in Australia and use on my laptop?
It was most impressive to see the gearbox cure. My wife has her driving licence test in 4 days time. We need a quick fix. Can anyone help please?
Hey guys my 451 wont Even Start P0900 fault
So what am i supposed to do ? Any ideas?
Super film 📼 pozdrawiam
Thanks!
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My mechanic did the actuator cleaning and regreasing, after that he did a reset to the transmission, but when i start to move the car, sometimes it makes a cluncking noise but other than that it shifts just fine.
Could it be a reteaching problem?
His tester could not perform a teaching to the transmission.
Or a worn clutch...
Thank you for watching!
Great video. Nice to know that this is a 'known' fault - which we have in intermittently Side question: I purchased a fully automatic gear shift to replace the soft touch for my daughter's 451 I was going to ask my mechanic to swap out the two while he had the car in the shop.
Q1: Does he need the TAN code to do the swap or will Xentry take care of that?
Q2: Is it too ambitious to try both at the same time?
Thanks once again
Have mine in the shop as I write. They say it is not a remapping issue but could be a faulty pump that supplies oil pressure to the gearbox(?). Any ideas?
Hi
Does not make a lot of sense...
The gearbox is essentially a manual gearbox that has some electric motors/servos to take care of the single plate clutch and the engagement of the gears...
Not sure where that oil pressure comes into play...
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Where are you located mate? My car has the same fault
Hi I enjoyed watching this video and it is very helpful. I have the same issue with my Smart and I have been having this trouble for about 3 months now. I know Smart garages charge extortionate prices to fix problem and every mechanic in my area is clueless when it comes to Smarts. I have recently purchased the Xentry software online but it doesn't seem to have the file to flush TPU, do you know why this is and how can I go about getting the software to do this procedure?
Hi
There is a fair bit on information out there, on how to get old of the files, and how to set DAS to programe offline... just google it...😉
Hope you fix your problem!
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Thank you!!! Here in the states, do you think a Smart is a good car to buy?
X Folium Yes.
Hello, thank you very much for this video. I have the same problem with 451 Smart diesel 2008. It only happened few times tho, I tried to shift reverse from neutral and the N just start blinking. So I turn the engine off/on, shift to 1, etc. and it starts working again after a few minutes. I'm planning to visit the mechanic in a few days (hopefully the one that knows what I'm talking about), can you please tell me what exact software version should I have on my TCU that may resolve this issue? Is it the SW version from the video? Thanks in advance.
The one from the video or above... I am not sure if mercedes released anything newer...
Thank you for watching and for your comment!
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Hi, thanks for this video, my smart has just done the same, I have booked it in with my mechanic, will they be able to do this? (not mercedes)
If they have the tools...
Thank you for watching!
Hi, thank you for such an explanatory video. I bought my 2009 Smart Fortwo recently and is giving same issue. Do you know where can I fix that around London. Many thanks :)
I am not even near London...
Find someone with the proper tools to start with...
Hope you get it sorted...
Thank you for watching and for your comment!
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Call Dave at Surrey Smart, he is really helpful
Awesome video, I just brought a new clutch actuator for my 451, the last one snapped the actuator spline and is doing the same as this video. I assume it needs to go to the dealer for a reteaching?
Most likely yes...
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@@LMAutoRepairs can you guys give me some advice please , I took my 2009 smart fortwo never had on before , the its semi auto and 3 lines come up on dash and i have to restart the car every now and then , i paid a smart car specialist who done a diagnostic and he told me its the gear motor to fix £560+ vat is this the clutch actuator and can I do this myself please please help.
@@bradleyclark1033
I have already answered on your other comment...
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Olá tioquei a bateria do meu smart fourtwo e nao sei o codigo pra desbloquear o radio podem dizer-me onde o posso encontrar)
Great video, I have exactly the same problem, my car is a Smart 2005 auto, 1.3, Petrol, would you have a suggestion where I can go to do this Update? I live in UK too.
Mercedes, a Mercedes or Smart specialist, or someone with this system...
There is not more options...
Thank you for watching!
My 451 diesel is doing the same
Which cable/interface used? Can I be done with passthrou and openport 2.0 cable?
Mercedes SD4
Thank you for watching!
Hy, i have the asme problem with my smart fortwo 451. Can you tell me where can i find this soft update offline. In Romania my friends can do this only online at Mercedes Service. Thank you.
Google is your best friend...😉
Thank you for watching!
I've a 2009 Smart Fortwo Passion where do you find to hook up to do the software update an what are you a useing to do this An how much please thank you.
You need someone with the correct tool, or take it to the dealer... there is really not many other options...
Thank you for watching!
Hi LM. Do you know if this software would work for Mitsubishi Colt ?
Most likely no.
Thank you for watching!
My smart doesn’t go into reverse unless I go into 1st first then put it into reverse, sometimes that doesn’t work (happening after I got the TCU updated and taken apart, cleaned and greased the actuator)
There is an adjustment on the actuator...
Have you calibrated everything successfully after the programming?
Thank you for watching!
LM Auto Repairs Thanks for the reply, I marked out where the actuator was before taking it off so I could put it back in the same position. As for the TCU update; I sent it off to 4Smart for the update, it did seem to work for a short time after receiving it back (that might just be luck) because now it does the exact same thing shown in your video :(
@@Yiasou
I can't really help any further...
Scan the car and check live data...
Is the only thing I can really suggest...
LM Auto Repairs Thanks for the advice pal 👍
Hii..in my country there r very rare auto cars..recently i got chance to work on hyundai verna car with auto transmission...the selector lever goes into drive bt the car doesnt move at all..the fault code says that transmission range sensor circuit high..does this mean that the transmission range switch is faulty??? or there is some other problem...it also has TCM module...plzzz advice...thank you
Possibly the sensor.... but it is difficult to say...
Could be a wire issue, etc, etc...
You need to investigate...
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Hello there, i want to thank you for you videos, it made me learn a lot.
I have a smart fortwo with a gear problem. When the car its not running i can switch gears, but after starting the engine it doesn't swift gears anymore. I switch the clutch kit and actuator and it does the same thing. Can you help me with that?
Cheers
If you swap those parts they will need teach-in... you need to get that done first...
While doing it, scan the car etc...
Thank you for watching and for your comment!
Yes I tried but it doesn't work. Gear learn ok but clutch learn it shows operation failed.
Cheers
So, something is not right in the clutch system...
You need to check that...
Just bought a second hand 2014 451 smart fortwo, second day it started doing this . Can any repair shop do the software update or it needs to be done at merc garage?
Thank you
Any repair shop with the right tools can do it...
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Good morning, can you help me? I have the same problem with my car. What program did you use? Could you help me download the update?
On this video I was using DAS...
Mercedes OEM software and interface...
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please pm me where you ge tthe xentry thanks.
Dear i had the same pb 3 weeks ago and i made software update but i had the same pb today though the car is stopped and not used😔
Feel sorry to hear that...
So, you obviously have something else wrong...
Scan it, and check live data... see if anything points in the right direction...
Thank you for watching!
Hi Sir. Where could I buy a similar Xentry scanner as you shown in the video?
Hi
A quick google search and you will find them...😉
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Hi Louis! Work done is a victory!
But ... I want to understand the true cause of the problem. Yesterday it worked, but today it stopped. What happened?
As far as my research went, was something to do with the limits of the actuator... if would move just passing that limit, would cause the issue... could be that temperature could influence it...
The fact that I opened it etc, could have also have something to do with it...
Who knows... would probably require more time to figure it out...
And you probably know how I like to get to the bottom of things.. but sometimes you fix the problem, and that's it...
Thank you for watching and for your comment!
Hello mister, how much can cost this update at the mercedes in France for 1L smart petrol 2008? And thanks for tip tu put in reverse quickly 🙂
Not sure... I would guess the dealer will charge like 1 hour labour...
Thank you for watching!
Wire fault for me, it looks liek to me, if it's repaired by self?
No... lol
Was kinda intermittent sometimes...
Definitely this update solved the problem...
After this the car never failed to engage reverse...
It did not take off smooth, but that was due to a worn clutch, which I know has been replaced few days later...
Thank you for watching and for your comment!
hello I have a smart and I can't start it I have these faults dtc p1700 dtc p0885 dtc p1800 p0886 would it be programming friend?
Hi
Doesn't looks like it is a programming issue... but difficult to say untill proper checks...
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Hi. Where you buy all diagnostic tools?
Hi
Sometimes ebay, sometimes here: cardiagtool.co.uk
Buy ar your own risk!
Thank you for watching!
how do you do scn coding . is it possible on your machine ?
No SCN coding necessary for this procedure... as no changes are made... only the update...
If you have an account with Xentry, yes you can retrieve the SCN...
Thank you for watching!
Top videos and advice as usual. @lmautorepairs I'm having trouble to get offline programming to come up as I need a folder called flashen to replace the original so offline programming comes up. Do you have this folder or do you know where I can get it from ? I've looked around but can't find it
I don't remember now from the top of my head... sorry...
There is some info out there though...
😉
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How much do you think a Mercedes dealership would charge to do this? Thanks! Great video
A couple of hours labour I would guess....
Thank you for watching!
Exselente. Diagnostic. Amigo nice video where do you live amigo
United kingdom...
Thank you for watching!
Where can I get this software to update the TCU?
Is part of Xentry...
Thank you for watching!
Do you have a link for the mercedes tool?
This is an expensive tool, I leave to you to do your research...
I don't want to suggest anything, and then something goes wrong and you will blame me for it!
You can check here, cardiagtool.co.uk
BUY AT YOUR OWN RISK!!!
Thank you for watching!
Very expensive tool indeed.
I swear every time I've driven one of those things, it feels like being in a car with a young teenager who's never driven a stick shift before!!!
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Yes, I had one, and they are a bit clunky...
Thank you for watching and for your comment!
Is it possible you were in a car, driven by a young teenager who’d never driven a stick shift before?
I remember how bad I was when I was learning to drive standard, and a smart is nowhere near as rough as that.
Cleaning the actuator is a total waste of time
The problem is that the car is detecting input shaft drag
The updated soft ware will accept a slightly amount of rotation but the problem is the clutch is finished
Replace clutch
I took my smart fortwo 2009 and i paid £80 for a diagnostic and he told me it needs a new gear motor what is this?
There is two gear motors... if I am not mistaken...
Is the motors that move the actuators which in turn engage the gears...
Thank you for watching!
@@LMAutoRepairs can you repair this for me or is it easily done?
Hello, you have used das xentry, but which obd plug have you used ? Openport2.0 Passthru obd? C4 obd? C5 obd? Thanks for helping
C4
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is possible to do the same whith bluedrive obd?
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Never used such thing... Don't know...
Thank you for watching!
@@LMAutoRepairs I had the same issue, I did the software transmission update and now With the update I have no problems putting on reverse gear, but 5 times to10 the reverse gear scratches a little bit, I would like to understand where the problem is. the car has only 29000km
Was the clutch biting point learned successfully?
@@LMAutoRepairs I don't know, I took it to mercedes, mercedes say the drag point failed twice, I have to change transmission and clucht; but I don't trust them, when I did the software update the car had 25000km
Most likely it failed due to a worn clutch...
Had it in the past...
Hi how do I get my own xentry
You buy one...
Thank you for watching!
@@LMAutoRepairs Haa Haa I know that but where can I buy one from
@@deanemily889
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Ebay is a good place to start...
You can also try here... cardiagtool.co.uk
Buy at your own risk, I have affiliations with this sellers...
@@LMAutoRepairs OK thanks
@@LMAutoRepairs HAHAHA
Are you in the uk
Yes...
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Most is that the clutch is worn out you need to replace it
It was replaced a few days later...
But this update definitely sorted the issue with failing to engage reverse...
Thank you for watching!
It's rarely a worn clutch. The car gives the clutch a certain amount of time to complete a movement. If it takes too long, it fails. Generally it's because the clutch is binding. The replacement clutches have Teflon splines which don't bind. However, smart's update just increases the time allowed for the actuator movement.
My 451 clutch has started to make a terrible noise on idle. It is as if some bolt has come loose inside. When I drive the car it drives perfectly fine however when it comes to a stop the rough noise is shocking. All the gears work fine. What's gone wrong to my car?
Possibly the thrust bearing... or something along those lines... I would have it checked before gets worse...
Thank you for watching!
@@LMAutoRepairs thanks so much . I took the car to a few mechanics to try and get their opinion . They all said dual mass flywheel. Confused now what to do. Is this expensive ?
Just push Brake with foot, then put reverse. It should work. Without push brake, it will not work.. tested on my smart 451 mhd
This was a different issue...
If that was the problem, would not engage 1st gear either...
The issue was just the reverse.... what I have showed in the video fixed the problem.
Thank you for watching!
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😊
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Traduction française 🇫🇷
damn robot, the worst gearbox i've ever seen.
Gearbox can't engage R due one thing - there are no any synchronizators on reverse gear , so the best way I found - turn on Forward, go a very little, than turn on R. It works perfect for me
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Another over engineered car. I really dont like all this fancy electronics in modern cars, which are built to the cheapest price possible. I tend to stick with good old fashioned manuals cars. Cars from the early 2000s seem to be the most reliable due to not having all these complex electronics?
Agree... however, cars are safer nowadays... and we want it or not, this is the way the industry is moving...
Thank you for watching and for your comment!
Yes me to I love cars from 04 to 08 whit a manual there the best