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Not a finer auto technician on KZfaq. Not only a brilliant diagnostician, but impeccable presentation and explanation! Simply the best!

Outstanding job, Dan. Not only are your superior diagnostic skills apparent working on this vehicle but also your superb teaching skills as you took us along so we can learn. Your videos are fantastic.

my guess is there is a lnown issue with the original SAM module which is why it has been superceded and as Mercedes are expecting a high level of failure they lower the price expecting to move a higher volume nice work as always Dan

Have you ever come across a car you couldn't diagnose/Fix dan. You're the best mate.Amazing work.

I very much look forward to a video on the rest of the issues like the cooling system being near-empty and dealing with all the other DTCs. Luckily, this car does not look like totally torn apart and tinkered with by previous workshops.

It is always a pleasure follow Dan in his journey to troubleshoot cars using profound knowledge and logic. A true expert that makes every work seem "simple".

Good techs like Dan seem to be more rare everyday. Good work Dan!

Dan makes it sound easy without even a single drop of drama. That's just amazing.

Great diagnosis and repair, Dan! Wow a 2019 that turned into a beached whale because of a bad module? Not very reliable! Can't believe the new module didn't cost 1000 dollars haha :)

For me as a diagnostic technician at MB, it is incomprehensible that so many workshops had problems finding the faults. If, as Dan did, you look at the important error codes and ignore the consequential errors, then you can find and repair the error quite quickly. The workshops previously involved did not show themselves to be competent... I can understand the frustration of vehicle owners.

All I need in my life is a little whiskey and a DD video. You’re the best, Dan!!

We need people of your talent in Singapore! That will raise the standard of diagnosting and repairs significantly!

Outstanding video! On the original module I would trace the red/pink wire from the connector to the IC that controls it. possibly a solid state relay or a mosfet. Next check datasheet, find input and probe the input with a scope. Pretty much the same fault finding technique but on a board level. For the cost of the replacement module it may not be worth it but it gives a closure and satisfies curiosity 😅

honestly not the trickiest troubleshooting I have seen you do, strange that no other shop could fix it, the diagnose tool really pointed you in the right direction and it is not the first time there is a no crank no start because of circuit 15 relay has no ground due to a faulty computer. The backup battery however was new to me, great job and thanks for sharing

One of the most interesting/informative channels on diags on youtube! Most shops would turn down this car as a waste of time.

You make diagnosing complex faults seem so simple as your logical conclusions are so sensible and meaningful. Top marks to you. I think your technical skills amazing and you are the best!

There is no better teacher for this stuff than our Dan. Thank you, Dan. I can't wait for next videos! ❤

Be good to see a video of the next steps with the car and the finished car on the road

Just happened to pass by your channel and I was impressed by how you lay information and simplify things. Your behavior, the way of explaining things and just the clean execution (and I mean clean in every aspect) demonstrates that you're very knowledgeable and a master of your craft. God bless you and I wish you the best.

You’re wonderful Dan,I’m glad to be one of your subscribers.

Top work, you make it seem so obvious! While everyone else scratches their heads....

Good stuff Dan! Always look forward to another diagnosis video.

Diagnose Dan Fixed it again! It amazes me how if you follow a diagnostic process, it eliminates all variables as you continue. Thanks Dan!

All of your diagnostics are like forensic detective stories, fantastic.

As always Dan, you make it look easy to diagnose the problems. Thank you so much for sharing and looking forward to seeing part 2 of the Mercedes. 👍👍

You make it look so easy Dan. Great content as always.

Great diagnosis and explanation Dan! Very much appreciated

A salute to a master technician. A mechanic's mechanic!

Love your videos Dan. If MB dealer had this module in stock off the shelf, it's likely mean it's a common failure on this car.

Brilliant job Dan!! What's really surprising is that nobody else had any idea where to look for the fault. 🤷🤷

Well done! This is how a diagnosis is supposed to be done. When mechanics just start replacing components and charge the customer that is a crime. Prove the trouble then charge the customer.

Love the video,really good to see how professional diagnose faults,👍

Great work Dan. More techs need to strive to be as good as you.

You really are a hero among technicians. I have come to appreciate your videos and wanted to say, Thank you sir for the videos you post. Very easy to follow along with and you have a voice made for the camera!

Hey mate, I just wanted to tell you that other car repair shops are being pissed with you right now. It's like that, because you actually have conscience. They dont want to help others like you do. I had a mercedes and sold it because i was tired of people not being able to fix those little issues on my car. I couldn't find a decent guy like you who could help me. Its really sad i did watch the audi e tron video with the automatic transmission problems from just a gasket and solenoid. Saying thank you for what you do simply isn't enough. I just wish that more people can be that way and help others. Its really sad, not because of the car sitting for one year, but because we as people are worse than animals, we are monsters who would go so low to screw one another over some pieces of paper called "money". Instead of that we can just help each other, like you are doing. God bless you for that man! Loving your videos and i'm also frustrated about my merc aswell, if i knew a guy like you i would pay double for the work! You deserve it, best wishes from Bulgaria 🙂

There is no one like you in youtube , you are the best of the best

Dan, absolutely fantastic and very happy you will make a good profit on this one. I think your approach to these issues is so logical and it goes to prove that even in these modern times with more and more complex electronics that a competent DIY’er with a decent multimeter, test light and power probe can confidently identify the source of the fault.

Programming the module would've been educational. I was very curious to see the Top Don in action.

Not a chance of me ever managing to even find the ladder which you are on the top rung of .. brilliant / unbelievable . my hero ..you are the man .. etc etc .. you make it seem so darn easy and straightforward .

Thanks for bringing us along for the ride, glad to see the diag process lead to not over spending 👍👍

Nice fix! Btw, i would love to see a video where you fix other issues so the car is in good shape again! I know its not quite what you normally do but i love that kinda videos. 🙂 Its just so satisfying to see cars get repaired and how nice they end up getting. 😛

What a fantastic video from you Dan. It always amazes me how you go about diagnosing these faults. Like to have an update on this car and did you make a profit!! Good job keep it up.

Excellent information...Thank you Dan for making diagnosis more informed.

Thanks Dan, enjoyed the journey with you, you deserve a raise.

More top level thorough diagnosis work Dan. You were under a lot of pressure to get that one going 🍻

It isn't often you get a solid win on cars, But it looks like you may have just pulled it off Dan.... Always exciting to watch you diagnose these faults mate... This was a particularly good video man. loved it...

I was pleased with your knowledge and teaching skills and explaining as you went along ... and your smile as you explained what you did 10/10

Simply amazing! I would be very intimidated by such a job... You make everything look simple because of your talent.

Awesome work again, DD! This stuff fires me up!! It's a bit of a shocker a module like that craps out at 3 yrs, but a nice surprise on the replacement cost! Well done! 🙌🏼

I honestly don't know much about cars, but it was very easy to understand your explanations and to follow through. thank you 👍

Well done Dan, you make it look so easy 👍🏻

fantastic work Dan, as expected .

Great video as always Dan. Hopefully your company can make a nice profit on the car😊

Incredible diagnosis. Thank you from Texas. I’m learning so that I can diagnose my no-start/no-crank 2005 Land Rover LR3.

Awesome diagnosis and fix Dan. Nice work.

Can't say it enough, Dan, these videos are so super entertaining. Nice car too. So odd that people let these expensive things sit for a year, or that nobody was able to diagnose it properly. You should be called Sherlock Dan fixed it again hahahaha. Goed Gedaan!!

When you have a hunch and it turns out to bee right. That's a great feeling isn't it. Nice video Dan. I can't belive this car couldn't be fixed whit all does fault codes basically telling the whole story about what's happening 😂

Brilliant as always Dan Thank you for taking time to share your knowledge and expertise

Subbed. This is an insane amount of diagnosis that the majority of mechanics wouldn't do. Im so glad my toyota/lexus dont have these issues lol.

Always remember kids: don't get overwhelmed from to many fault codes. Break it down to the essentials and go on step by step. Nice job, Dan! I'm wondering why the customer didn't go to an official MB Service? He rather decided to try different shops and spent a year to get this fixed 😮

Top video! Misschien een condensatortje of een diode die niet meer functioneert. Opzich vrij makkelijk te testen. Ik hoop dat de overige codes interessant genoeg zijn om te filmen ik ben benieuwd door hoeveel hoepeltjes je nog moet springen. Keep up the good work! 💪🏻

I love it! Presentation and content second to none.

Your a man after my own heart i'm glad i found you .

Greetings from Romania !!!

This guy is a legend! Love the way he diagnoses cars , honestly this channel is a must for anyone trying to diagnose faults on a car .

It's a no crank no wash

You might fix it, but in the end it's still a Mercedes :P

Excellent ! I'm very pleased we were there to help you, I know I couldn't of done that on my own! You are a clever methodical man.

I love the logical way you sort these issues out ... But do you ever Not Diagnose any of them ?... "I suspect not" 😀

Great stuff again Dan, really easy to watch and learn, I've been a commercial technician for 30 years and after watching your videos I'm venturing into the car industry for a new challenge. Thank you again 👍

That was sweet,it looks very easy to fix cars when when Dan is on it. Great teacher ever. Thanks

Love your methodical approach to troubleshooting!

Great work Dan. It’s amazing how other so called shops can’t diagnose these things yet charge to try doing so

Great work diagnosing this car. I'm amazed that a 2019 car already has electrical issues like this that caused someone to abandon it for 12 months. They really don't make them for longevity anymore.

Great job Dan!! Thank you for sharing the video!!

That way you you Diagnosed Step by Step , I meant 1-2-3 etc.. You are on really Expert and professional.. Excellent..I doubt the dealer can find the issue so Quickly; and if so they will be thousands of $.. to be fixed..Thx for the Upload..

Another fantastic video Dan, i need to tow all the broken down car's from here to you, and maybe we can split a share out once you have them diagnosed and fixed 🙂

Always fun to watch your step by step eliminating problems, and logically working on. It also, every time, reminds me of why I drive with an eighities car myself!

You know they have discounted the Sam Module because they know the OEM module is defective…..You Rock Dan….🤟🏻🇺🇸🇺🇸🇺🇸

Great video Dan .truly enjoy your diagnostic strategies.

I normally follow him from kenya ,,,he has taught me alot I appreciate

I really like this guy, he's got that instantly trustworthy feel about him.

Fantastic video! Bravo. Very logical and easy to follow!

Dan your expertise level is on all the time, like the other comments said, i haven't seen any, i repeat anyone come close to your skills. Thank you. 👍👍👍🍺🍺🍺

Very good tone of voice, speed of explanation and details provided. And without working in this field, it makes you watch until the end. Thank you 🇹🇩

I rarely thumbs up or subscribe to anything but being an ex mechanic I really enjoyed your detailed diagnosis. Top Work Dan. Subscribed 👍

i absolutely enjoy every video you do as you so methodically go through each part and clearly explain why,i was concerned that bell box battery with the terminals the wrong way round was going to pass you by but dans the man

Nice work. Modules can make people go crazy if they have no idea where to start

Brilliant Dan, I can’t remember how many “dashboards eye distorted as an apprentice in a Ford Dealership ! But all was well after applying a few “ rolls of electrical tape. Living on the edge, I went on to “ run an enormous Oil Refinery in the New Forrest”, with no issues hopefully .

As usual, incredibly good instruction and troubleshooting 🙂

Thanks Dan always at your best to teach us

As usual, Dan "hits" again and makes the car start again. Keep up the good work Dan

Always fun for a retired factory troubleshooter to watch you - I learn new things and greatly enjoy you presentations.

My respect to you ,you are a professional in the field ,that's why I never tire of watching your videos thank you , teacher for sharing your knowledge

Great video as usual. Keep us updated on the progress of the car

I know nothing about cars and I clicked here out of curiosity and I'm glad I did, it was really interesting and informative video. Greets

You should have over a million subscribers. Love your content.

Bravo man, bravo.. I work with these cars as a mechanic at dealership and this was valuable info.

Really enjoyed this video. Seems super easy when you know what to do ...