Mercedes C250 ECU Diagnose Test and exchange fix 

Great Video,,my ECU just conked out ,had it in one garage for 4 weeks..they could not diagnose it, so I found a guy locally,,came to my house found the problem in 1 hour confirmed the problem took it out and sent it out for repair,,50 years working on cars trucks mining equipment and this was the first time I could not fix my own car,,its only a vauxhall mokka,,thank God for guys like this.

Remember never trust multimeter use a test light to put load on the wire

Great video. Why are people like you that know their stuff, so hard to find?

Excellent work mate, I remember when we did my Audi TT mk1 immobiliser delete for the first time and got my car running again 😊👍🏽

That's powerful lesson

You certainly know your stuff mate, another cracking video

Very good diagnostic video! Cheers from Cincinnati, Ohio, USA.

Nice job mate professionally carried out 😊

Experience diagnosis master nice video

Stupendous work 🎉

Great video as always

I like the way explain every detail thumbs up, I now it's not that easy,wish we could link up some day

Very helpful video!

Great goob man🎉🎉❤❤

Weldon sir, professional carried out

Excellent video bro 😀

good stuff. going to check the ecu too. hopefully it just dirty connector or something

Helpful vedio God bless

very nice sir ❤

Venus. Bravo

Thank you, sir

You can check the engine nummer and some other usable information in the Secret menu over the Cluster module.

You did a great job there. Can you help me get the wiring diagram you're using for this troubleshooting? It makes the work easier.

why the bugger do they put an ecu right next to the engine...just so it cooks slowly ?

HEY FRIEND, GREAT VIDEOS I HAVE LEARNED MUCH FROM THEM, I AM INTERESTED IN AQUIRING A MB STAR XENTRY DIAGNOSIS SYSTEM (I HAVE A PROJECT 2009 R230 SL550) IS YOUR XENTRY A BYPASS OR OPEN SHELL TYPE, IT IS VERY CONFUSING, I WANT A STAND ALONE NON-SUBSCRIPTION VERSION PLEASE ADVISE, PERHAPS A FUTURE VIDEO ON THE SUBJECT?...CHEERS!

Will anything go wrong if you have swopped around the two cables on the prefuse panel that are held by the number 10 socket.

Thank you for this video. I have a question if you could answer. There is a ticking noise from engine when the engine is off. And the obd device shows P68501 fault code. The engine ticking started after dpf delete remap. The question is; Is my ecu or power relay is malfunctioned? Or is it related to wrong configuration? Much appreciated if you could answer

Excellent job sir 👌i got Honda Jazz,, OBD2 scanner saying error in communication with ECU, any thoughts thanks

21:02 Hi I’m after some advice or possible service I have a Mercedes 220 cdi 2009 It’s had a steering lock replacement with an emulator which seems to be ok and clicking . We have the ignition back but hers a list of things that don’t work . I’ve tested fuses and relays which seem to be fine apart from fuse 22,23,24,25 which I think connect to the ecu . The steering wheel functions don’t work and wipers . Please see the codes I’ve got when plugged in and cleared .

Now you'll need to unlock the radio as well since control units with different vins were put on the vehicle, simple to do with vediamo, also vin and correct scn/variant coding can be done without online access 😉

Do you have a pdf of that schematic?

This man out here doing gods work

hi sir thank you for video can you help me with this.. issue I have e350 2007 code. p0412 I Chek and test every thing finally I change ecu but the cood still in can you help me pls thanks

Do the keys also have to be programmed?

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Hi, I loved your video and detailed explanation and you were able to install another ECU that was great. My question is that why you did NOT change the VIN number since the car VIN is different from ECU......I have swapped ECU on 2001 Mercedes C240 via pro and the car runs & drive however, ECU VIN has 'nt been changed tp match car's VIN and hence I can 't get the inspection passed. I am in NYC and unable to find someone who would write VIN. Also, I can't find a scanner that will do this for this old Mercedes. Any suggestions.....Please let me know. Many Thanks!!

Pin 5 positif or eart?

I need help I have2014 audi A3 crank but not statin

Hi need help, now it wont crank, ignition relay goes on/ off and the cooling fan goes in high, even with the ignition off, could it be the ecu,?

Great video but still confused. 3 or 4 pins on the harnesses didn't have power/ 12v. So you jumped the wires. But power to the harnesses come from fuse box which was good including relays. So where did you get 12 v. back to the harnesses?? The Ecu was bad but they get 12v from fuse box. Subscribed anyway

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You know your stuff Sir.. I could do with your help please

However the vin no is not correct ? And now you cannot alter it What did it all cost ????

Hi nice job, I have a c250 2013 with a problem in start up, it starts misfire, in cylinder 123 I turn it of and it gets better turn off again and only 1 misfires, then wait temp. to rich 60c turn it of and on again and it work great, no code only the misfire and p0705, the fuel pressure is 2k in starting and in idle is around 800 to 900psi I incline that it is injector, any advice? thanks

Hi sir where are get wireing digram

Where did you find ecm

good afternoon sir, a pleasure to greet you I have the same problem with a car that is the same as the one in the video with the same symptoms I did all the tests that you do there and if the results are the same the only difference in this car is that the cooling fan is always Its on. My question is, could the same fault in the ecu cause that?

Can wiring diagram from you

How can I have the Mercedes program

Hi sir

hello according to your wiring diagram when you jumpered manually the fuse and the cannon plug was disconnected on ecu modual you should have read voltage on pin 94&pin 95 .unless if you had open circuit also .repeat cannon plug disconnected. i do see what you said when you plugged in the connector you had no voltage due to shorted cuircuit in ecu on pin 94,95. another word i don't see it when the plug was disconnected and you jumpered the fuse you had no voltage on those pins even though is direct wire to plug.

What kind of program do u use for wiring diagram? Need what u using.

Is there anyway to get the correct vin of the car?

I have a c300 09 thottle body start making a Noise after turned off the car also drains the battery any idea please someone tell me could be the ecu

Ignition switch won't on ,replacement coil

Can i buy those wiring

Thanks for your fast response, for sure I will try your recommendation, today I made a test by disconnecting coil in 4 cyl. because is the only one working at startup, doing this the car didn't wanted to start, in the fifth intend it started with 2 and 3, 1 is the one that takes longer to work, then I connected 4 and didn't work, turn off and waited a few second and started again and work. for cyl 1 I did the same procedure but waited a minute or 2 and started and everything working find with strong fuel odor. for me it could be injector leaking or clog injector, also I have strong fuel odor in oil dip stick or wend replace. what do you think ?

Wrong Tools, Wrong Diagram and pinching wires like that, means: later moisture/corrosion damage to them......

Boring

What's the year of this C250?

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