The One Automotive Lab Scope Video You NEED to Watch! (Mercedes Limp Mode)

2012 Mercedes C250 1.8L. This video will show you just how important having a scope and knowing how to use it really is! This vehicle is going into limp mode only at full throttle. You’ll see why every piece of data matters so much, and why attention to details is EVERYTHING! This Sunday session with Andy and The Professor will truly help you to TEST, NOT GUESS! Enjoy!
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Your use of Royalty Auto Service KZbin Channel and its content is at your own risk. Due to factors beyond our control, we cannot guarantee against unauthorized adjustments of this information, or improper use of this information. Royalty Auto Service assumes no liability for property damage or any injuries that could incur as a result of any of the information presented in this video. Royalty Auto Service recommends safe practices when working on vehicles and using lifts, jack stands, electrical equipment, chemicals, lubricants, power tools, or any other tools or equipment used or discussed in this video. Due to factors outside the control of Royalty Auto Service, no information contained in this video shall create any expressive implied warranty or guarantee of any particular result. Any injuries, damages, or losses that could result from improper use of tools and equipment are the sole responsibility of the user and not Royalty Auto Service.
#mercedes #mercedesbenz #labscope #oscilloscope #scope #diagnostics #checkenginelight #car #automotive #mechanic #autorepair #autorepairshop #europeancars

[@scientist100]

I somehow feel saddened that a lot of shops would have fixed this by throwing a pedal assembly in there without knowing what was causing the issue because of the code given; this video shows evidence of how critical these sensors are and that they indeed fall out of calibration over a period of time. Good job guys!

[@markhb3346]

Right , a parts changed would have seen the DTC shot a peddle at it and been on its way without even looking at live data. I’m a scope users and believe sometimes we overlook the obvious because we’re afraid to be wrong and will waste time going down a rabbit hole when the answer is right in our face. Either way great video and great demonstration on how picky these systems can be .

[@andrewfischer9477]

@@markhb3346 I agree 100%. You need to know when you're setting yourself and the client up for failure. And this is an extremely fine line too. But honestly, it took longer to do this one because we were filming. I'd say 1-1.5 hours total diagnostic time involved. And that includes re-search.

[@TONYSTARK-jh2wu]

why's that make you sad if the problem was fixed. there's no information on the specs like they said. I bet the dealer would throw a pedal at it to.

[@markhb3346]

@@andrewfischer9477 understood , but I do appreciate you guys sharing this because honestly I would have graphed the APP1 and 2 PIDs and wouldn’t have even thought that little difference would be enough to fault it . Thanks for sharing that it’s very valuable and shows how susceptible these systems are to failure and they’re not very fault tolerant. But I think what the OP of this thread was stating that your typical parts changed would have seen the DTC and it’s description and just shot gunned a peddle and been right with no effort. But like what Dan Sullivan says “you only learn during the diagnostic and not the repair” and this video proves that point . I’m a new subscriber 👍👍

[@dtandfam8100]

After they replaced the Throttle body assembly 🤭 Awesome video! Great walk through and explanation of the problem & solution. Thanks for sharing 👍

[@MarzNet256]

Cool. Sensor two reads right in between the high and low specs with pedal fully depressed. Sensor one is just over max spec, but also fell right in between high and low specs when replaced. The code, the scope, and excellent reasoning all combined to form a diagnostic trifecta.

[@asewamu]

Great diagnostic approach 👌🏻 love seeing ATS videos. The stop feature built in when paired with the eScan is such a time saver esp when diagnosing by yourself on a road test.

[@davidsinclair5004]

A big hello from the UK I am really pleased to find this channel, its also nice to see the extended use of the ATS scan and scope, I have one but I know of nobody else local to me that does, Pico is big here which I also have, I love the power of the scope and how by using one makes you so much more sharper and knowledgeable, I am continuously learning thanks to using a scope and watching videos like yours. keep up the great content I am looking forwards to many more from this vibrant new channel.... Btw: its nice to see and nice to see the ATS scope being shown as it was only Bernies videos that were exposing the power of it... All the best guys David (Sinclair Engineering)

[@flemmingjacobsen2763]

Another brilliant video on an interesting subject. Without the proper documentation you wouldn't have had much of a chance in a case like this. Well done and well explained. Thank you guys. 👍

[@vickenkaragozian2041]

Escope is the best. Bernie knows how to engineer equipments Thanks for posting great videos and using the Escope 👍

[@pebjr6621]

not only the voltage is back in spec, but the waveform is more a square wave and before it was more like a slight ramp to it... great job! would like to see more diagnostics with the scope.

[@Jason-cu1jp]

Thank you for posting this. Your videos are top notch. I'm just a DIYer who's getting into scopes. This really highlights how, at a glance this could be missed...but with some scoping and comparing to the exact threshold figures a problem was found.

[@theroyaltyautoservice]

Exactly! Maybe you should join the field! 😃

[@robertberthiaume7301]

Very impressive troubleshooting guys. You nailed it and I like your thouroughness.

[@bartscave]

Thanks for taking the time to video and share these diagnostic jobs.

[@richardmitchell7836]

First time here, and I found this very interesting, for sure will be watching more of your guys!

[@superdupercake]

great job with laying all the signals out guys! checks out that over 4.8V shows as an open or "high" to the computer.

[@mohammed61750]

Amazing inspiration you have done, I learned a lot from your videos. You are the best, watching your videos the from lebanon 👍🏼

[@juergenscholl2843]

Thank you for your time and effort to make these videos, much appreciated. You may have a look at the scanner's live data to identify specific app's or tps' by their voltage levels comparing them to the scope or dvom😊.

[@shamessun]

Thank you…. Very good video…. Thank you that you showed the OEM scan tool number and the scope number and showed the deferent . That help a lot

[@arthuraucar3696]

Another great video, and very very informative.! Thanks again...!

[@saiautomotivemilton.7128]

Very good video thank you taking the time to do this.

[@scottgilliam7524]

Another great video guy's very informative your very close to becoming my favorite channel.

[@theroyaltyautoservice]

Thanks Scott! We really appreciate that!!

[@wshamroukh]

Awesome diagnosis guys... Well done... Keep those great videos coming

[@theroyaltyautoservice]

Thanks friend!

[@isalmankhan1]

Amazing Thanks for sharing Guy's👍 Love the diag process & logical thinking😍 I'm new to the channel & Professor's video on the BMW camshaft sensor brought me to your channel, Love your work Guy's keep up the great content👍 Stay Safe👍

[@theroyaltyautoservice]

Thanks Salman! We really appreciate that. See you on the next one!

[@kentporter2991]

Excellent!!! You guys are now the very Best on KZbin! 👍😎🇺🇸

[@user-rm4io6vp3k]

I’m just scratching the surface with Automotive diagnostics. This was very interesting to see. Thanks for the effort on this

[@davechan5159]

I’m sold on the ATS system. It’s true and continues to prove itself true; scope data is vital to success. Notice how even the manufacturer scantool software could not precisely pinpoint the fault with streamed data - a voltage overage. Well done fellas!! 👍👍

[@8power0]

I AM RE-WATCHING THIS VIDEO MANY TIMES ,,, BECAUSE THERE IS SO MUCH TO LEARN HOPE TO SEE MANY MORE AND LOOKING FORWARD TO EVERYONE THANKS SO MUCH FOR YOUR TIME 🙏🙏🙏👍👍👍

[@101thenuke]

Just watched all your videos and have to say very informative. Not a car guy but was a nuclear engineer from Uk working on control systems who happens to like tinkering with cars,, Have bought myself a Pico. Love watching the likes of Diagnose Dan and Ivan at Pine Hollow because of how they explain stuff. You have been subscribed to, Thanks

[@theroyaltyautoservice]

Thanks Mark! We really appreciate that!

[@josephremache3721]

Crazy. Such a tight voltage tolerance, especially when the car was not running and the sensor was within spec (lots of people would have overlooked and not make the call on the sensor or maybe guess lol). Recreating the problem 100% is the key I'm taking away from this video. Thank you thank you thank you for sharing this with us.

[@theroyaltyautoservice]

You are 100% correct. That’s the take away from this video. Glad you got something from it!

[@justinhayward5027]

Another great one! Keep ‘em coming

[@geoffprotheroe1201]

Very helpful video - well done.

[@robertmobileman8304]

great video , no guessing, scope wins ....... great content and you guys are so dedicated working on a sunday

[@theroyaltyautoservice]

This is the first time in years he’s done that. Professor was just wanting to get y’all some videos! 😬😉

[@tedgtfan]

Nice work guys.

[@edsanders5479]

Excellent video!

[@jassidhaliwal3228]

Hey guys love from Australia 🇦🇺 The reason why you guys saw 4.756v max at live data was because the engine might not be running And when you guys checked on scope the engine was running and the alternator was pumping voltage a little bit that's why it went over 4.8v That's my logic

[@hhn2002]

Amazing content; keep it up

[@edlopz1722]

You guys nailed it. Thank you for the detailed explanation. (ATS scope is top notch but the legend B. Thompson needs to make it a little more affordable 😅.

[@scientist100]

I paid for the 4425a standard kit and I don't do this professionally. I got 3 scanners which my Verus also includes a scope and additional scopes. I believe shops should own scopes and accessories to prove the failure modes of the vehicles when diagnosing.

[@modassirfaruq7397]

Good diagnosis

[@xonerate]

Great Job, Incredible how The Code could not be looked up.

[@tonyannand2999]

Very good channel 👍 guys are very good hope for more video

[@kc360awareness]

Love the invaluable data only a scope can give. Great catch guys Would some of this data have been available in the freeze frame information?

[@theroyaltyautoservice]

No, I happened too fast.

[@suryaprihadi2258]

My new to watch channel❤, thank u guys. If ATS scope one day make a floating ground version, even only a 6 channel one, i would love to have one.

[@dimisrambodimisrambo7285]

YOU ARE THE BEST AND ON SUNDAYS

[@abdalgadermohamed5636]

Great job

[@BipVuongAnCapTheMuaMayBayXao]

I’m your new follower I’m also tech doing all kind of work( diag programming, locksmith key) but not as good as you guys. Curious are you using genuine Xentry, cause when I see green cable it look like my c4 doip . Genuine xentry need to buy combo 4 years subscription and it cost like 37k that’s so much compare with the rest. Great job. Ats solution is the best for scope . Very clear explanation. You guys are best

[@chotuusian4127]

Good work

[@goodtimejohnny8972]

I had a dodge journey that set throttle body and accelerator pedal position codes. All wires checked out good to those items. The crankshaft sensor wires were shorted together causing those codes. I just used wiring schematics and volt meter to figure it out.

[@richardnilsen5]

Jobs backing up that need diag I would have hooked up the scope and tried the tap test, tug test, wiggle test and look for drop outs while working the throttle before I drove the car it may have speeded up the process I wonder if the waveform would have went high? great video 👍

[@AliBaba-uu2pw]

You are best my man we here love you

[@thisisausername1265]

Scopes are fantastic. Had a cruze last week with what felt like an ignition miss at WOT above 5k rpm. Scope confirms good coil trigger, injector control, and current to the coil. Current for cylinder 4 is consistently 2 amps higher - coil had overheated and melted a little plastic over the terminal for the secondary terminal which feeds the coil boot. Scope made it obvious.

[@advancedleveldiagnostics]

Really great case study, Thanks! Wow I think I'm more inclined to look at the ATS scope after watching your video then after one of Bernie's😃. One correction when you were cleaning up the waveform by processing the data you said it's like ac coupling on a Pico, I think you meant to say low pass filter.

[@theroyaltyautoservice]

Thank you! And yes you are correct!

[@andrewfischer9477]

Yes.... that was a total goof on me. I honestly haven't used the pico much since getting here with the ATS.

[@scientist100]

@@andrewfischer9477 I did consider trading my 4425a for the Elite but I love the control on the Pico scope. Feels like an android vs iphone. Where pico is highly customizable and escope has predefined presets that are most likely to be used and save time on setting things up.

[@douglasmontgomery6315]

Good job

[@eduardofrederico]

Outra aula. Parebéns! Eu uso o osciloscopio russo MTPro

[@chrismartino9078]

Love the content, guys.

[@andrewfischer9477]

I feel honored the BooBear himself likes it! ❤

[@chrismartino9078]

@@andrewfischer9477 I had to check my nickname in all the chats!!!

[@andrewfischer9477]

@@chrismartino9078 😂 appreciate you Sir!

[@HUBONEN]

Where IS that comment "code allready told you The fault" 🤣 nice work guys. Best regards from Finnish mechanic.

[@jessemackenzie6516]

Great content. When did ATS add the center cursor function? I do not see it in the release notes?

[@andrewfischer9477]

It’s in Beta right now

[@pavelkutishchev5551]

Great video, thanks for sharing! May i ask which Dell laptop model do you have?

[@theroyaltyautoservice]

Sorry, I don't know what model it is.

[@W.Khairi]

As the APP is a simple potentiometer it wouldnt usually be the first suspect, Good catch

[@theroyaltyautoservice]

Thanks for watching!

[@robertmedina6875]

New subscriber here. It looks like you guys are in beautiful California.

[@theroyaltyautoservice]

We are in Southeast Ga right on the border of Fla! Thanks for your support!

[@robertfrancisco1193]

good DIAG. going to scope out my APP SENSOR like your team did and check my results. i have a aftermarket pedal enhancer on my jeep that goes into limp mode almost the same way. but mine is intermittent comes and goes. getting codes for APP SENSOR. thanks !

[@prospexican]

u guys make it look so easy, but is not, lol, i know it is time consuming, but great job.

[@MsFireboy2]

Question Sherwood is Bernie Thompson your Automotive Test Solutions your service representative?

[@harveyadams5453]

Well good video on how to use the ATS scope. . But the disappointing thing is the Jack leg mechanic would have just thrown parts at it. Especially if they use the Mercedes part they would have fixed it

[@danman9017]

tks

[@lielyncher755]

Talk about some nit picking ass diodes, a little over 100ths of a volt off may need a software tweak instead of a new sensor. Not our problem though. MB and All data definitely leaves much to be desired. Whatever ,steel sharpens steel and I appreciate every sniper in this field with the patience to share what he sees on the scope.

[@user-co1tn3gh3p]

I seems that to work at Royalty you need to have a man bun. I see you and your son. Andy offsets this with the Michigan hat, Go Blue! I can comment because I am 35 years in and I might have a longer gray hair man bun than you. I love you content and how honest you are!

[@mauriziogiasan4411]

super

[@MrRightNow]

Why not just look at the scanner live data and see the sensor voltage from there, which you could also graph, instead of going through the trouble of connecting a bunch of scope wires?

[@keltecshooter]

Can you invert one of the TPS channels and superimpose to verify symmetry ?

[@theroyaltyautoservice]

You can’t invert it once you have the capture but while getting the capture you could do that, yes.

[@keltecshooter]

@@theroyaltyautoservice that's too bad, I use a Pico and a micsig but have been considering the ATS . Looks to be an awesome bit of kit .

[@prospexican]

question, how do u get the scope to stop when the code pops out? did u guys did it manually?

[@theroyaltyautoservice]

The EScope and EScan work together and stop the scope when a code sets. You have to set it up to do that. Hth

[@YuckFou0x0FFFF]

The output voltage from that sensor was only 0.37% out of range and immediately set a trouble code.

[@karirautio]

It is in range or is not in range. There is no other possibilities. You are pregnant or not. Even 0,000001% over and it is not in range. The range itself was not tight at all.

[@ecotec4]

what holster are you using there?

[@theroyaltyautoservice]

There’s a link in the description. It’s called tale of knives. Make sure to use code for 5% off. People asked all the time on TikTok. They love it. Progress has had his for years as well and it holds up well!!

[@philh9238]

So the typical parts cannon would have fixed it?

[@theroyaltyautoservice]

Parts cannon could always fix a car but why guess when we can test? 🤔

[@philh9238]

You have a lot of knowledge.

[@trublue2319]

Saw escope and clicked

[@dimisrambodimisrambo7285]

IS THE ENGINE VACUUM THAT THIS DIAGNOSTICS MEASURES REAL OR WHAT THE MAP MEASURES?

[@theroyaltyautoservice]

We are reading the accelerator pedal position sensors and throttle position sensors. No engine vacuum or MAP in this one.

[@dimisrambodimisrambo7285]

@@theroyaltyautoservice I know, I just asked the specific diagnostic where it measures engine vacuum, if it measures the real one or the one shown by the map?

[@goochi5544]

Good guess

[@aymenmohamed1134]

👍👍👍👍🏻

[@DannerPlace]

You should have defined the trace color/function early so we could followed along more easily. But great video otherwise.

[@Usmanthemecano]

The parts shooter would've won lol

[@philh9238]

That e scope looks way to complicated. The pico 7 is much easier to use.

[@theroyaltyautoservice]

Totally understand. Everyone has their own preference and that’s okay! 😃

[@edwardboers2269]

Both scopes will do the job

[@seanmiller678]

Sounds like a Mercedes driver to me... ploop....

[@TheMinister2000]

Great video. But this video shows the sad, bad truth about modern automotive industry and its unneeded complexity, especially the European. The point is that this DTC error would not even appear if the software in the car ECU was programmed to a higher tolerance for this APP sensor signal, say to 5V. As we have seen from the waveforms, hardware vise everything is OK with the system, we can say that the system is 100% correct. It is only the software triggered DTC and limp mode with no real electrical or mechanical problem.

[@alexchong213]

Xentry data TOLD YOU the pedal was fckd, why bother with scope to prove it? waste of customers time and money sorry

[@ELEISONCARABALLO]

You guys started right from the very beginning when you opted to use Bernie Thompson arsenal.

[@swav100]

Enjoy your channel are you on Michigan

[@theroyaltyautoservice]

We are in Georgia!

[@andrewfischer9477]

Just a huge Big Blue fan!

[@kingbolen_official]

Great video!