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I was told that since emissions is not a safety issue, Mercedes does not have to do a recall on it. My question is it seems that there is a high failure rate and the engineers have located this in a location that ends up with a high service bill. The win is for Mercedes increasing their service repair costs and the loser is the customer - us. I was quoted over $ 1100.00 for this repair! The part is right around $ 400.00.
I have third party warranty, power train. Is this in the engine? If Engine or This is the error I got. Is this issue in the engine cause I got powertrain warranty. If in the engine they will cover it.
transmission they will cover it.
About one month ago this code came up on my wife's 2015 C300 4 matic I did buy the part online (274-090-17-29-80 - Intake Line) cost was $260
I have not installed this yet
I tried a simple fix first
I knew the engine had 0w-40 in it and the level on the dipstick was just over the max line
I am taking a guess that the 40 weight oil was to thick and the level was too high
I changed out the oil to 5w-30 full synthetic and made sure the level of oil was right in the middle of the min and max line on the dipstick
with my OBD reader I erased the code and have not seen the code reappear for about three weeks now
The part number listed is for a C300 2015 ----There are a couple of well versed guys on here that helped with this ---Doorhandle LED posts of 3-27-2019 and GoHuskies who copied and pasted his work order from the dealership to have this problem fixed can be found on the thread for C Class C205
Last edited by mgomez149; Apr 3, 2020 at 07:37 AM.
How are you so sure thats the part? I deleted the code but if you plug it in it will still be there.
Originally Posted by mgomez149
About one month ago this code came up on my wife's 2015 C300 4 matic I did buy the part online (274-090-17-29-80 - Intake Line) cost was $260
I have not installed this yet
I tried a simple fix first
I knew the engine had 0w-40 in it and the level on the dipstick was just over the max line
I am taking a guess that the 40 weight oil was to thick and the level was too high
I changed out the oil to 5w-30 full synthetic and made sure the level of oil was right in the middle of the min and max line on the dipstick
with my OBD reader I erased the code and have not seen the code reappear for about three weeks now
The part number listed is for a C300 2015 ----There are a couple of well versed guys on here that helped with this ---Doorhandle LED posts of 3-27-2019 and GoHuskies who copied and pasted his work order from the dealership to have this problem fixed. This info can be found on the thread for C Class C205 pertaining to the P052E code
HELLO ALL,
Recently had p052e71 code which means there is a problem in crank valve breather case had to go to Mercedes dealership takes 1 whole day and attaching the bill for your reference. Parts is $353.69 + Labour 1382.76 roughly 1736.76 plus sales tax. You might see Leak near the valve which is oil separator also you will fill minor power loss while driving as the crank and oil seperstor is not functioning100%. Fell free to ask any question. Also I did Auxillary battery Malfunction diagnostic and they change a part parx paul capacitor usually its life is 4 years than they go bad no extra battery is there its capacitor on passenger side under glove box. If you know a good German car fixing mechanic you can save some $ but I would prefer dealer job especially for crank job as it need 100% accurate work.
Last edited by Bhavik Bhatt; Apr 29, 2020 at 12:49 PM.
I just called and they said my warranty will cover it...I'm still under warranty until the end of this month. P052e code... I was planning to fix it myself, but since it's covered, I'll let them do it.
They also said I have 4 recalls that need to be done... They offered me a loaner car :-)
Originally Posted by 3dken
2018 GLC 3004Matic , 1602 Miles.
Check Engine Light came on.
Code P052E : Positive Crankcase Ventilation Regulator Valve Performance.
Pissed to see Check engine light so soon..
Anyone had this code? serious issue ?
I am just hoping this is not repeating nighitmare as my old Q7...
I just called and they said my warranty will cover it...I'm still under warranty until the end of this month. P052e code... I was planning to fix it myself, but since it's covered, I'll let them do it.
They also said I have 4 recalls that need to be done... They offered me a loaner car :-)
good to hear that its in warranty otherwise you were about to spend $1700
The dealership fixed it for me under warranty. They kept the SUV for 1.5 days. This is the info left on my report:
PERFORMED SHORT TEST WITH CODE P052E71 IN ME. PERFORM
INSPECTION OF CRANKCASE VENT VALVE,OK. PERFORM VACUUM TEST
AT ENGINE DIP STICK AND IT HAD 12hpa WITH NO CHANGE WHEN
OPEN OR CLOSED VALVE. CHECKED VOLTAGE TO VENT VALVE -11.7
VOLTS. CHECKED RESISTANCE OF VALVE -30 OHMS .OPENED PTSS
CASE # 000144656 AND WAS ADVISED TO REPLACE ENGINE CRANKCASE
VENT VALVE WITH 274-090-16-00-80 .CLEARED CODE AND ROAD
TESTED. OPERATING PROPERLY AT THIS TIME.
It looks to me like the part number is 274-090-16-00-80. I hope this helps anyone thinking about making the repair themselves. Good luck!
From what I can tell this is a common problem with the GLC300. The ENGINE CRANKCASE VENT VALVE is causing problems. I'm not sure if this is an issue beyond this model. As soon as I mentioned the concern, the dealer representative said these don't have much trouble other than this. I hope he's right.
I'm guessing there's no other fix for this issue than replacing it. I lucked out and had it done under warranty. If you're out of warranty, it will cost you...either having it done professionally or labor, time, and material doing it yourself. I would probably give it a try myself after seeing what was done. But it's no walk in the park. You have to be willing to get in there and take some things off the engine to get access.
From what I can tell this is a common problem with the GLC300. The ENGINE CRANKCASE VENT VALVE is causing problems. I'm not sure if this is an issue beyond this model. As soon as I mentioned the concern, the dealer representative said these don't have much trouble other than this. I hope he's right.
I'm guessing there's no other fix for this issue than replacing it. I lucked out and had it done under warranty. If you're out of warranty, it will cost you...either having it done professionally or labor, time, and material doing it yourself. I would probably give it a try myself after seeing what was done. But it's no walk in the park. You have to be willing to get in there and take some things off the engine to get access.
My local Mercedes Service center wanted me to change the water pump when I got this error message, that was not the first time they misdiagnosed an issue. I have since sold the car.
We have just bought a 2017 C300, with about 53,000K Km on it (that's about 33,000 miles in old money). Picked it up from the dealer, went for a "spin" of about 90 km of mixed driving then, on the way home, we noticed the CE light had come on. Since the car was still under warranty, and brand new to us, I called the dealer the following day and arranged to have it picked up and investigated.
Turned out to be the same dreaded P052E71 issue, about which I of course knew nothing before we bought the car. Bottom line is that, with about three weeks' worth of factory warranty left, and a purchased upgrade to the Star Certified warranty, it was fixed by the dealer at no charge. I'm very glad we upgraded, because if this happens again, it'll be a couple of thousand dollars worth. The car is great, and we really love it; hope this is an isolated incident.
Interestingly enough, my average fuel consumption had been around 11 - 12 litres/100K, but when the car was returned from the dealer (all right, mostly highway miles, but still a reasonalble amount of city traffic), the clock was showing 6.7. The blocked valve clearly has an effect on power otput and therefore fuel economy, and this is obviously a huge improvement; we'll see how this progresses.
I got the code, p052e. 44k miles GLC300 2016. The dealer wants to diagnose first for $250...even tho I told him the code already. This is New Country Benz in Hartford CT. My warranty expired a few months ago and there's no COVID19 extension like VW Audi
Update - I went to another dealer and they covered it as goodwill, and they also found that I need a new thermostat, also covered. This is Mercedes Benz of Springfield MA. I doubt I'll ever go to the Hartford CT dealer for anything.
My question is what causes this? Can the wrong octane being put in the vehicle cause this? My kid put in 87 octane instead of 91, could this cause this? Or is this a more common issue seen in these vehicles? This is the first time I have owned a Mercedes. I have a 2018 300GLC 4matic with around 24K miles on it.
My question is what causes this? Can the wrong octane being put in the vehicle cause this? My kid put in 87 octane instead of 91, could this cause this? Or is this a more common issue seen in these vehicles? This is the first time I have owned a Mercedes. I have a 2018 300GLC 4matic with around 24K miles on it.
Just a poorly designed part and design, not related to the octane as far as I know. Not many use 87 octane (as Mercedes specifically states not to use less than 91), yet thousands have had this issue. Expect a $1300 to $1700 repair bill for this, based upon dealer hourly shop rate. Perhaps one could save a couple hundred dollars taking it to an independent garage if that is your thing.
It's an all-day repair. It requires the following procedures: remove air filter housing, remove tubing to intake line, remove engine control unit and bracket, remove intercooler from bracket, remove intercooler bracket, disconnect battery, remove belly pans, remove belt, remove AC compressor from block, support engine with hoist, remove left engine mount and bracket, and finally replace intake line with integrated vent valve....then put it all back together and clear all faults.
My service was done in December 2018 with 32,400 miles (roughly 50,000 kilometers) and I was told that by then the part had been revised.
I am having this same exact code being shown on my 2015 c300 4matic. It has come and gone several times over the last few months. My warranty is just barely expired as well so I took the car into the dealership last week to find out if this problem would be covered under the federal emissions warranty. I was told that the crankcase vent valve would not be covered and that just about the only part that would fall under the emissions warranty is a catalytic converter . Sounded like bs to me so I opted to try and find a fix for it myself.
I am having the exact same issue with my 2015 c300. The engine light has been on and off about every other week and when I ran the diagnostic it came out with the P052E code. Every time I go to take it to my dealer, the light turns off so I end up taking it home and we have been doing this for the past month. He even took a look at it and said everything appears fine and that it could be a signal problem. Not quite sure what to do or if you have any suggestions based on your experience?
I am having the exact same issue with my 2015 c300. The engine light has been on and off about every other week and when I ran the diagnostic it came out with the P052E code. Every time I go to take it to my dealer, the light turns off so I end up taking it home and we have been doing this for the past month. He even took a look at it and said everything appears fine and that it could be a signal problem. Not quite sure what to do or if you have any suggestions based on your experience?
If the engine light came on, there's a record of it stored in the computer they can reference. I'd go to a different service provider if you're out of warranty. Or buy the bluedriver code reader off amazon and read it for yourself. Google is powerful...search the results and have a good idea what the problem is instead of hoping for ethics and competence from service provider.
Got the dreaded check engine light after completing an oil change. At 27,100 miles, it seems like a failure like this is premature. Wondering if the oil change had something to do with it.
Took the car to the dealer and since it is still under CPO warranty, it was diagnosed and fixed in one day.
Of course, you get the response that "we rarely see these issues". The service advisor mentioned that the valve gets plugged and then stops working.
When I looked up the part number for the part 274-090-56-00, it shows that this is a re manufactured part. I wonder what they do to reman the part? And at $260 per, why don't they just remove the failed part, clean it out (if that's what it takes), and then reinstall.
Has anyone diagnosed their failed part?
I saw this part on ebay...not sure if this is a common repair, but its reachable and replaceable with a single torx screw holding it in. I don't have the dreaded P052E, but do have an oil smell coming from this general area. PCV Membrane on Ebay...Membrane PCV Mercedes M274 / M270 2.0L А2700180000
I just did this job and it was painful. Not difficult, just difficult to get access to the bolts. There are a few nearly impossible bolts to get to for the motor mount, probably because I did not remove the AC Compressor. One thing I did remove that helped was the starter which gave me a view and much better access to the bolts holding on the PCV "box" itself.
Vrather, that part does almost nothing. It is actually no longer part of the assembly. My rebuilt PCV "octopus assembly" did not have this there was simply a plastic bracket for the bolt to go through. the part that does all the work is the box thing with the yellow cap on it.
About one month ago this code came up on my wife's 2015 C300 4 matic I did buy the part online (274-090-17-29-80 - Intake Line) cost was $260
I have not installed this yet
I tried a simple fix first
I knew the engine had 0w-40 in it and the level on the dipstick was just over the max line
I am taking a guess that the 40 weight oil was to thick and the level was too high
I changed out the oil to 5w-30 full synthetic and made sure the level of oil was right in the middle of the min and max line on the dipstick
with my OBD reader I erased the code and have not seen the code reappear for about three weeks now
I had P052E on 110kKM driven 2017 GLC300 2 weeks ago. I erased and the code came back after 500Km, 2 weeks.
Did your 5w-30 oil and amount fix the code? Can you update what's going on your car?
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I doubt I'll ever go to the Hartford CT dealer for anything.
