Thanks you for the video! But right before I attempted your fix, I saw the comment about MB extending the warranty on the Intake Assembly to 15 years/150K miles. I contacted the dealership (who claimed to know nothing about it) who forwarded me to MB customer care who VERIFIED the extended warranty for me and then informed my dealership. So I just got back my 2018 GLC 300 that had this very problem after MB did the entire repair under warranty.. It was a good feeling knowing someone else had the joy of doing the repair AND it will still be covered until 2033 . So before doing this I suggest you contact MB and find out if your vehicle is covered. Key words are "Intake Assembly" extended warranty. Do NOT say PCV valve failure..

I’m a benz tech, had no idea these come separate from the whole oil separator, this job pays 3-4 hrs warranty and I get them done in about a hour. Ac compressor doesn’t have to be removed just remove belt and all the bolts besides the bottom mounting screw for compressor then swing it out of the way to get the front bolts on the side of the cylinder case. Use a floor jack or at stand .. remove ds engine mount then engine leg. You can put a block of wood under the engine some where to hold it there if not it won’t sag much. Then after that you can get at the whole assembly. I’m happy to know you can just replace the valve because when we do it we have to replace the valve, intake pipe on the turbo and oil separator all as one which really isn’t necessary. I figure I can offer this cheaper repair that you do to customers on the side(I obviously can’t do this in the dealer unless approved by MB) this would really take me 10minutes

There is a lot of mixed information in the comments. To be clear, Mercedes issued a 15year/150k mile extended warranty, which ever comes first. The requirement is that your check engine light needs to be on and showing a P052E fault code. It doesn’t matter if you have an extended warranty or not. It’s issued directly from Mercedes. Everyone with the 4 cylinder turbocharged engine found in various models from 2015 to 2020 is covered by this warranty. It doesn’t matter where you bought it from or if you’re the original owner or not. Take it to the dealer and they will repair it free under warranty. Scan the fault code first before you take it in to the dealer. Make sure you are specifically getting a P052E fault code because if it is something else, you will be charged $280 dollars just for the diagnostic. I hope this answers everyone’s questions and helps to clear everything up. Have a nice day.

You can also buy the valve alone for around $20 and provide your own hoses. I just replaced mine on a 2015 C300 and it works great. Thanks for the video. It has been done twice before at the dealer under warranty.

Thanks 2018 glc300 PO52e light on at 58km. Mercedes fixed it warranty and in stalled the upgraded parts. 2 years later at 80 km PO52e light on again. Rest and comes back the next day. Mercedes said they would pay part of the bill. As it is out of warranty. I follow this video and replace the bleed valve I did not have to remove cooling lines from the after cooler just pulled it out of the way. Light off for 3 weeks now this is a $100 fix that Mercedes charges over $2000 to repair. Thanks for doing the video saved me a lot of money.

To anybody reading this Mercedes has extended the warranty to 15 years/ 150k miles. They will fix it for free, double check as its worth getting it fixed under warranty before attempting this. This covers different models as well around the '16,'17,'18 year range.

Thank you first off! I would like to add that i used the extra rubber hose on the hard line, after i cut it off at the nipple. To avoid the kink, and it worked even better! if it kinks om you and causes CEL try this. Thanks again.

On the c 300 Mercedes extended the warranty on the valve just came out check with your dealer. Update. I just received from Mercedes a notification to fix crankcase valve. Free. So all check with your dealerships.

I called, and I confirm P052E is covered by Mercedes-Benz intake extended warranty until 2032. Taking mine in to get CEL fixed

수리 시간을 많이 절약할 수 있습니다. 좋은 영상 감사합니다😄

Constant tension clamps are the best answer screw type clamps are( JUNK) they come loose and they get over tighten and smash the plastic hose under the rubber hose or they dig into the rubber stock clamps are engineered for a reason

Just a note that there were about 50 short video clips put together to form this video. Unfortunately, the video editing software put some of the clips out of order. The good news is that if a clip is out of order, it is followed closely by the clip that should have come first. Bottom line - watch the video through once before you start the job.

Thanks for the video it enabled me to fix my actuater blocked fault code and cleared the eml I still have a short to positive to crankcase fault tho

just bought the part, going to attempt it this weekend

Omg thank u i have a c300 and same code too expensive but did the check engine light come back i just failed inspection because of this problem ugh thanks for the videos i wish it was a bit longer and less cut on the video 😅😅 loved the video going to tak this job too

My Mercedes dealer told me the part is covered by their Mercedes Benz extended warranty for all vehicles having this issue till 2029. The Part is severely back ordered and the service department must diagnose before they order the part, so don’t wait.

I don’t understand I got the same code. By the dealer but I have no symptoms car is driving great

Does that part for the glc identical in part number for a 2016 mercedes metris? I have same code..p502E-71 Thx

I can confirm the comment back 2 months ago...MZ will cover this for free. They sent out letters to all owners with your VIN # on letter. The envelope was labeled "Extended Warranty Addendum". The extended warranty for the error code for faulty crankcase ventilation valve covers a wide range of models 2015-2020, C,-Class, E, GLC, SLC, etc. Covers 15 years/150,000 miles (whichever occurs first). Google the letter that Mercedes put out Aug-Sept 2023 of you cannot find yours and take it to a dealer. I believe the NHTSA also shared a memo on it. Mercedes will cover this for free. As well as other recalls or extended warranty that your vehicle has not been serviced for. If you already paid for service at a MZ dealer or purchased parts from them, you may be eligible for reimbursement. See details in letter. Hope this helps someone as it was a life saver for me!

Dude. Great video. 10x harder filming and working with one hand. Appreciate it. Any idea where the new valve can be bought today? Ty

I hope mine fits under the extended warranty. If not I will be doing this in a couple of weeks.

Hi Jeff Thank you very much for this video, you have mention in it that you have purchased GLA250 with the same problem did you fix the GLA? if yes can you share any tots?

I just went to the dealer and they confirmed this part is under a 15 year warranty from Mercedes Benz. So I am covered for 7 years. The light comes on every 18 months, so it might need repaired 4 more times under warranty. Crazy that they can't find a fix that will last.

just did this today and the fuel hoses, took me 5 hours, hopefully that should be fixed, some bolts were a pain to take out

Hello please I have similar issue with my Mercedes cla 250 can anyone help me out to fixed the crankcase

Hey, where did you buy this part? Could you share a link?

The issue is with the oil separator part that attaches to the block and I'm sure this will fix the problem just long enough for you to sell it.

I just got my car back from Mercedes for this exact problem. I was looking at the work order and they did not replace the intake line assembly. It says it wasn’t required. They only performed a quick test, software update, and reset the codes. Is this normal? Are they trying to push off the repair until it’s out of warranty. The car has 108k miles now and I’m worried it will come back after hitting a 150k, when it’s out of warranty? It also says to have the customer monitor it but they never told me that either. The service advisor told me they were going to replace the part and wiring as it has oil in it but when I picked it up they didn’t do it. Nobody even told me. I found out by reviewing the work order when I got home. This is MB of Sacramento. Any Mercedes techs know if this is normal procedure or am I being screwed? TIA.

Amazing that a 2.0 liter 4 banger is soooooo tight to work on…. What’s worse is it’s a known major design defect….

At what milage do you suggest cleaning or changing the pcv valve. I have a cla 250 2014, 60k miles till now. I do not want to wait untill it is clogged or blocked, i will meither clean or change it. Please advice what milage to do so to prevent this from happening. I changed the serp belt and i had a squeaking noise, i still hear this every once in a while i donno if this pcv valve does this too, pushing the crankshaft seal to touch and make this sound...

if i was to do on my glc , id remote locate that pcv to the top somewhere, such a small repair with all that headache

well done sir, I am going to do that myself on my c300 and your video will be very helpful. Only question I have is that do other parts of that system (oil separator and diaphragm) cause any farther problems?

Please make a cheap fix for p06DA code 🙏 this video is pricesless thank you so much !

good evening, I would like to know if the car also loses power due to this problem??

Would that part work for the 2017 E300? Thanks for posting this!

Thank you, will you present also GLA 250?

Did you do the install on your 250? I have one that is experiencing the same problem. Found the part you mentioned for sale and have it en route. Mine looks slightly different in the car right now. And install will be different, but curious if the new part solved your problems and stayed gone. Thanks!

how work that vale ? when open ore close must finish the video -with open (exploded view )of the old valve -to see what is inside -to understand how work

Is this same part number Good for a 2016 C300? It's really complicated when you search online for this information. Thank you in advance!

Does anyone have the part number for the clamp mentioned in this video?

I would love to be able to do this BUT, I cannot find that part anywhere online. Can you please tell me where to get one?

HI, we have the exact same error codes, car seems to drive ok except when hit accelerator fast, it grunts a little, its been on for months, we have a 2017 E300, do you think its the same problem and fix? thanks very much!!

How closely similar in location for a 2018 C43? If someone knows

the dealer said my 2019 GLC 300 vehicle needed a software update that should fix it. we shall see.

Nice video. I'm not sure if I'll have time to do this, but it's good to know there's a solution. I've had this done twice on my GLC300. Both times under warranty. It came on the last two times at 18 months. This is month 15, so we will see what happen...

How do you take the black plastic behind the ecu out, i didnt see any white clips

Man thank you very much you did a great job!!

Mine is showing circuit open

Well, I need some help if anyone can think of ... I found the part and followed the instructions and it all went pretty well until I went to start it up. I got a ton of error codes. Turns out that my battery was bad so I changed that and got a different set of codes. They are: P0193 Fuel rail Pressure sensor high input. P2137 Throttle / Pedal position sensor a circuit high input P0123 Throttle/Pedal position sensor A Circuit High input P0222 Throttle / Pedal position sensor B circuit low input P1190 Sensor "intake air pressure" has a short circuit to positive P0238 Turbo/Super charger boost sensor A circuit high P0108 Manifold Absolute pressure / BARO Sensor high input (this one changed from low to high) P0183 Fuel Temperature sensor A circuit high input P0030 Heater control bank 1 sensor 1 P052E Positive crankcase ventilation regulator valve performance So what is the common thing here. I have taken it apart and checked all of the connectors that I took apart and they are all good. So did I blow a fuse? Is there a common fuse? Or is it possible that something I did messed up the computer? Is there a common connector that handles all of these signals? HELP!

Will this work on cla or metris vans

I have a 2019 sprinter and the dealer wants $2400 to fix the p052e . Can you guys please help me find this part so I can fix it ?

This basically USA market Emmsion code you ecu flash the car also to delete the code

I think this is not part number 120, but the end of part number 250

"easy"

You say easy??😂😂😂😂😂😂😂

Did it fix the problem ?

good evening, I would like to know if the car also loses power due to this problem??

good evening, I would like to know if the car also loses power due to this problem??